private void CreateFIBQuestion(SectionBaseInfo info, Section section)
{
valuesStruct valueMC = new valuesStruct(20); //题干展示的值
//随即获得数值
this.GetRandomValues(info, ref valueMC);
//生产题干文本
string questionText = QuestionText(valueMC);
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.Content.Content = questionText;
fibQuestion.Content.ContentType = ContentType.Text;
section.QuestionCollection.Add(fibQuestion);
QuestionBlank blank = new QuestionBlank();
QuestionContent blankContent = new QuestionContent();
blankContent.Content = valueMC.answer.ToString();
blankContent.ContentType = ContentType.Text;
blank.ReferenceAnswerList.Add(blankContent);
fibQuestion.QuestionBlankCollection.Add(blank);
fibQuestion.Content.Content += blank.PlaceHolder;
StringBuilder strBuilder = new StringBuilder();
//解题步骤
string Steps = SolveSteps(valueMC);
strBuilder.AppendLine(Steps);
fibQuestion.Solution.Content = strBuilder.ToString();
}
private void CreateFIBQuestion(SectionBaseInfo info, Section section)
{
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
Random rand = new Random((int)DateTime.Now.Ticks);
decimal valueA = rand.Next(minValue, maxValue + 1);
Thread.Sleep(10);
decimal valueB = rand.Next(minValue, maxValue + 1);
Thread.Sleep(10);
decimal valueC = rand.Next(minValue, maxValue + 1);
decimal result = valueA + valueB + valueC;
this.questionValueList.Add(result);
string questionText = string.Format("({0} + {1}) + {2} = ", valueA, valueB, valueC);
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.Content.Content = questionText;
fibQuestion.Content.ContentType = ContentType.Text;
fibQuestion.ShowBlankInContent = true;
QuestionBlank blankA = new QuestionBlank();
blankA.MatchOwnRefAnswer = true;
QuestionContent blankContentA = new QuestionContent();
blankContentA.Content = valueB.ToString();
blankContentA.ContentType = ContentType.Text;
blankA.ReferenceAnswerList.Add(blankContentA);
fibQuestion.QuestionBlankCollection.Add(blankA);
fibQuestion.Content.Content += blankA.PlaceHolder;
fibQuestion.Content.Content += " + ";
QuestionBlank blankB = new QuestionBlank();
blankB.MatchOwnRefAnswer = true;
QuestionContent blankContentB = new QuestionContent();
blankContentB.Content = valueA.ToString();
blankContentB.ContentType = ContentType.Text;
blankB.ReferenceAnswerList.Add(blankContentB);
fibQuestion.QuestionBlankCollection.Add(blankB);
fibQuestion.Content.Content += blankB.PlaceHolder;
fibQuestion.Solution.Content = string.Format("交换两个因数{0}和{1}的位置， 结果是{1}和{0}。", valueA, valueB);
section.QuestionCollection.Add(fibQuestion);
}
private void CreateFIBQuestion(SectionBaseInfo sectionInfo, Section section)
{
int minValue = 10;
int maxValue = 100;
if (sectionInfo is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = sectionInfo as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
if (section.QuestionCollection.Count == 0)
{
this.questionValueList.Clear();
}
Random rand = new Random((int)DateTime.Now.Ticks);
int value = 0;
int j = 0, k, iFlag1 = 0, iFlag2 = 0, j2 = 0, k2;
int flag = 0;
while (true)
{
flag = 0;
for (int i2 = 0; i2 < maxValue; i2++)
{
value = rand.Next(minValue, maxValue);
for (j = 2; j < value / 2 + 1; j++)
{
if (value % j == 0)
{
iFlag1 = 0;
iFlag2 = 0;
for (k = 2; k < j / 2 + 1; k++)
{
if (j % k == 0)
{
iFlag1 = 1;
break;
}
}
j2 = (int)(value / j);
for (k2 = 2; k2 < j2 / 2 + 1; k2++)
{
if (j2 % k2 == 0)
{
iFlag2 = 1;
break;
}
}
if (iFlag1 == 0 && iFlag2 == 0)
{
flag = 1;
break;
}
}
}
if (flag == 1)
{
break;
}
}
if (Enumerable.Where <int>(questionValueList, (c => (c == value))).Count <int>() > 0)
{
Thread.Sleep(10);
continue;
}
break;
}
questionValueList.Add(value);
string questionText = string.Format("分解质因数 {0}=", value);
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.Content.Content = questionText;
fibQuestion.Content.ContentType = ContentType.Text;
section.QuestionCollection.Add(fibQuestion);
QuestionBlank blank1 = new QuestionBlank();
QuestionContent blankContent1 = new QuestionContent();
blankContent1.Content = j.ToString();
blankContent1.ContentType = ContentType.Text;
blank1.ReferenceAnswerList.Add(blankContent1);
fibQuestion.QuestionBlankCollection.Add(blank1);
QuestionBlank blank2 = new QuestionBlank();
QuestionContent blankContent2 = new QuestionContent();
blankContent2.Content = j2.ToString();
blankContent2.ContentType = ContentType.Text;
blank2.ReferenceAnswerList.Add(blankContent2);
fibQuestion.QuestionBlankCollection.Add(blank2);
fibQuestion.Content.Content += string.Format("{0}×{1}", blank1.PlaceHolder, blank2.PlaceHolder);
}
private void CreateFIBQuestion(SectionBaseInfo info, Section section)
{
if (section.QuestionCollection.Count == 0)
{
this.questionValueList.Clear();
}
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
Random rand = new Random((int)DateTime.Now.Ticks);
int minValueA = 1;
if (minValue > 0)
{
minValueA = minValue;
}
decimal valueA = rand.Next(minValueA, maxValue);
Thread.Sleep(10);
decimal valueB = rand.Next(minValue, maxValue);
bool exist = true;
for (int i = 0; i < 50; i++)
{
if (Enumerable.Where <decimal>(this.questionValueList, (c => (c == valueA * valueB))).Count <decimal>() == 0)
{
exist = false;
break;
}
valueA = rand.Next(minValueA, maxValue);
Thread.Sleep(10);
valueB = rand.Next(minValue, maxValue);
}
if (exist)
{
return;
}
decimal result = valueA * valueB;
this.questionValueList.Add(result);
string questionText = string.Format("{0} ÷ {1} = {2}。", result, valueA, valueB);
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.Content.Content = questionText;
fibQuestion.Content.ContentType = ContentType.Text;
fibQuestion.ShowBlankInContent = true;
fibQuestion.Content.Content += "被除数";
QuestionBlank blankA = new QuestionBlank();
QuestionContent blankContentA = new QuestionContent();
blankContentA.Content = valueA.ToString();
blankContentA.ContentType = ContentType.Text;
blankA.ReferenceAnswerList.Add(blankContentA);
fibQuestion.QuestionBlankCollection.Add(blankA);
fibQuestion.Content.Content += blankA.PlaceHolder;
fibQuestion.Content.Content += "除数";
QuestionBlank blankB = new QuestionBlank();
QuestionContent blankContentB = new QuestionContent();
blankContentB.Content = valueB.ToString();
blankContentB.ContentType = ContentType.Text;
blankB.ReferenceAnswerList.Add(blankContentB);
fibQuestion.QuestionBlankCollection.Add(blankB);
fibQuestion.Content.Content += blankB.PlaceHolder;
fibQuestion.Content.Content += "商";
QuestionBlank blankResult = new QuestionBlank();
blankResult.MatchOwnRefAnswer = true;
QuestionContent blankContentResult = new QuestionContent();
blankContentResult.Content = result.ToString();
blankContentResult.ContentType = ContentType.Text;
blankResult.ReferenceAnswerList.Add(blankContentResult);
fibQuestion.QuestionBlankCollection.Add(blankResult);
fibQuestion.Content.Content += blankResult.PlaceHolder;
fibQuestion.Solution.Content = string.Format("被除数是{0}, 除数是{1}， 商是{2}。", result, valueA, valueB);
section.QuestionCollection.Add(fibQuestion);
}
private void CreateFIBQuestion(SectionBaseInfo info, Section section)
{
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
if (section.QuestionCollection.Count == 0)
{
questionValueList.Clear();
}
Random rand = new Random((int)DateTime.Now.Ticks);
int valueA = 0, valueB = 0;
int value = 0;
while (true)
{
int sumCommonDivisor = 0;
valueA = rand.Next(minValue, maxValue);
valueB = rand.Next(minValue, maxValue);
if (valueA < valueB)
{
value = valueA;
}
else if (valueA > valueB)
{
value = valueB;
}
else
{
continue;
}
for (int j2 = 1; j2 < value; j2++)
{
if (valueA % j2 == 0 && valueB % j2 == 0)
{
sumCommonDivisor++;
}
}
if (sumCommonDivisor > 1)
{
break;
}
}
string questionText = string.Format("写出{0}和{1}的所有公约数", valueA, valueB);
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.Content.Content = questionText;
fibQuestion.Content.ContentType = ContentType.Text;
section.QuestionCollection.Add(fibQuestion);
if (valueA < valueB)
{
value = valueA;
}
else
{
value = valueB;
}
for (int j2 = 1; j2 <= value; j2++)
{
if (valueA % j2 == 0 && valueB % j2 == 0)
{
QuestionBlank blank = new QuestionBlank();
QuestionContent blankContent = new QuestionContent();
blankContent.Content = j2.ToString();
blankContent.ContentType = ContentType.Text;
blank.ReferenceAnswerList.Add(blankContent);
fibQuestion.QuestionBlankCollection.Add(blank);
fibQuestion.Content.Content += blank.PlaceHolder;
}
}
}
private void CreateFIBQuestion(SectionBaseInfo info, Section section)
{
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
Random rand = new Random((int)DateTime.Now.Ticks);
int tmpValue = maxValue / 10;
decimal valueA = rand.Next(minValue, maxValue / 5 + 1);
Thread.Sleep(10);
decimal valueB = rand.Next(minValue, maxValue / 5 + 1);
Thread.Sleep(10);
decimal valueC = rand.Next(minValue, maxValue + 1);
decimal coeff = rand.Next(2, tmpValue + 1);
decimal symbol = rand.Next(0, 2);
// if (symbol == 0) // "+"
{
decimal result = coeff * valueA + valueB;
this.questionValueList.Add(result);
string questionText = string.Format("{0}×x+{1}={2}；\n第一步, ", coeff, valueB, result);
//第一步，移项 {0}×x = {2} - {1}
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.Content.Content = questionText;
fibQuestion.Content.ContentType = ContentType.Text;
fibQuestion.ShowBlankInContent = true;
QuestionBlank blankA = new QuestionBlank();
blankA.MatchOwnRefAnswer = true;
QuestionContent blankContentA = new QuestionContent();
blankContentA.Content = coeff.ToString();
blankContentA.ContentType = ContentType.Text;
blankA.ReferenceAnswerList.Add(blankContentA);
fibQuestion.QuestionBlankCollection.Add(blankA);
fibQuestion.Content.Content += blankA.PlaceHolder;
fibQuestion.Content.Content += " ×x= ";
QuestionBlank blankB = new QuestionBlank();
blankB.MatchOwnRefAnswer = true;
QuestionContent blankContentB = new QuestionContent();
blankContentB.Content = result.ToString();
blankContentB.ContentType = ContentType.Text;
blankB.ReferenceAnswerList.Add(blankContentB);
fibQuestion.QuestionBlankCollection.Add(blankB);
fibQuestion.Content.Content += blankB.PlaceHolder;
fibQuestion.Content.Content += " - ";
QuestionBlank blankC = new QuestionBlank();
blankC.MatchOwnRefAnswer = true;
QuestionContent blankContentC = new QuestionContent();
blankContentC.Content = valueB.ToString();
blankContentC.ContentType = ContentType.Text;
blankC.ReferenceAnswerList.Add(blankContentC);
fibQuestion.QuestionBlankCollection.Add(blankC);
fibQuestion.Content.Content += blankC.PlaceHolder;
//第二步{0}×x = {3}
fibQuestion.Content.Content += " \n第二步, ";
QuestionBlank blankA1 = new QuestionBlank();
blankA1.MatchOwnRefAnswer = true;
QuestionContent blankContentA1 = new QuestionContent();
blankContentA1.Content = coeff.ToString();
blankContentA1.ContentType = ContentType.Text;
blankA1.ReferenceAnswerList.Add(blankContentA1);
fibQuestion.QuestionBlankCollection.Add(blankA1);
fibQuestion.Content.Content += blankA1.PlaceHolder;
fibQuestion.Content.Content += " ×x= ";
decimal valueB1 = result - valueB;
QuestionBlank blankB1 = new QuestionBlank();
blankB1.MatchOwnRefAnswer = true;
QuestionContent blankContentB1 = new QuestionContent();
blankContentB1.Content = valueB1.ToString();
blankContentB1.ContentType = ContentType.Text;
blankB1.ReferenceAnswerList.Add(blankContentB1);
fibQuestion.QuestionBlankCollection.Add(blankB1);
fibQuestion.Content.Content += blankB1.PlaceHolder;
//第三步，两边除以系数{0}，{0}÷{0}×x = {3}÷{0}
fibQuestion.Content.Content += " \n第三步, ";
QuestionBlank blankA2 = new QuestionBlank();
blankA2.MatchOwnRefAnswer = true;
QuestionContent blankContentA2 = new QuestionContent();
blankContentA2.Content = coeff.ToString();
blankContentA2.ContentType = ContentType.Text;
blankA2.ReferenceAnswerList.Add(blankContentA2);
fibQuestion.QuestionBlankCollection.Add(blankA2);
fibQuestion.Content.Content += blankA2.PlaceHolder;
fibQuestion.Content.Content += " ÷ ";
QuestionBlank blankB2 = new QuestionBlank();
blankB2.MatchOwnRefAnswer = true;
QuestionContent blankContentB2 = new QuestionContent();
blankContentB2.Content = coeff.ToString();
blankContentB2.ContentType = ContentType.Text;
blankB2.ReferenceAnswerList.Add(blankContentB2);
fibQuestion.QuestionBlankCollection.Add(blankB2);
fibQuestion.Content.Content += blankB2.PlaceHolder;
fibQuestion.Content.Content += " ×x= ";
QuestionBlank blankC2 = new QuestionBlank();
blankC2.MatchOwnRefAnswer = true;
QuestionContent blankContentC2 = new QuestionContent();
blankContentC2.Content = valueB1.ToString();
blankContentC2.ContentType = ContentType.Text;
blankC2.ReferenceAnswerList.Add(blankContentC2);
fibQuestion.QuestionBlankCollection.Add(blankC2);
fibQuestion.Content.Content += blankC2.PlaceHolder;
fibQuestion.Content.Content += " ÷ ";
QuestionBlank blankD2 = new QuestionBlank();
blankD2.MatchOwnRefAnswer = true;
QuestionContent blankContentD2 = new QuestionContent();
blankContentD2.Content = coeff.ToString();
blankContentD2.ContentType = ContentType.Text;
blankD2.ReferenceAnswerList.Add(blankContentD2);
fibQuestion.QuestionBlankCollection.Add(blankD2);
fibQuestion.Content.Content += blankD2.PlaceHolder;
//第四步，x={4}
fibQuestion.Content.Content += " \n第四步, ";
fibQuestion.Content.Content += " x= ";
decimal valueA3 = valueB1 / coeff;
QuestionBlank blankA3 = new QuestionBlank();
blankA3.MatchOwnRefAnswer = true;
QuestionContent blankContentA3 = new QuestionContent();
blankContentA3.Content = valueA3.ToString();
blankContentA3.ContentType = ContentType.Text;
blankA3.ReferenceAnswerList.Add(blankContentA3);
fibQuestion.QuestionBlankCollection.Add(blankA3);
fibQuestion.Content.Content += blankA3.PlaceHolder;
//∴x={4}是方程的解
fibQuestion.Content.Content += string.Format(" \n∴ x=");
QuestionBlank blankA4 = new QuestionBlank();
blankA4.MatchOwnRefAnswer = true;
QuestionContent blankContentA4 = new QuestionContent();
blankContentA4.Content = valueA3.ToString();
blankContentA4.ContentType = ContentType.Text;
blankA4.ReferenceAnswerList.Add(blankContentA4);
fibQuestion.QuestionBlankCollection.Add(blankA4);
fibQuestion.Content.Content += blankA4.PlaceHolder;
fibQuestion.Content.Content += "是方程的解。";
fibQuestion.Solution.Content = string.Format(
"第一步，移项 {0}×x={2}-{1}；第二步{0}×x={3}；第三步，两边除以系数{0}，{0}÷{0}×x={3}÷{0}；第四步，x={4}；答案，∴x={4}是方程的解。",
coeff, valueB, result, result - valueB, (result - valueB) / coeff);
section.QuestionCollection.Add(fibQuestion);
}
// else // "-"
{
}
}
internal Question CreateQuestion(QuestionType type)
{
Question question = null;
switch (type)
{
case QuestionType.MultiChoice:
{
MCQuestion mcQuestion = new MCQuestion();
for (int i = 0; i < 4; i++)
{
QuestionOption option = new QuestionOption();
option.Index = i;
mcQuestion.QuestionOptionCollection.Add(option);
}
question = mcQuestion;
}
break;
case QuestionType.MultiResponse:
{
MRQuestion mrQuestion = new MRQuestion();
for (int i = 0; i < 4; i++)
{
QuestionOption option = new QuestionOption();
option.Index = i;
mrQuestion.QuestionOptionCollection.Add(option);
}
question = mrQuestion;
}
break;
case QuestionType.Essay:
{
ESQuestion esQuestion = new ESQuestion();
question = esQuestion;
}
break;
case QuestionType.TrueFalse:
{
TFQuestion tfQuestion = new TFQuestion();
QuestionOption optionT = new QuestionOption();
optionT.Index = 0;
QuestionOption optionF = new QuestionOption();
optionF.Index = 1;
tfQuestion.QuestionOptionCollection.Add(optionT);
tfQuestion.QuestionOptionCollection.Add(optionF);
tfQuestion.RandomOption = true;
question = tfQuestion;
}
break;
case QuestionType.Match:
{
MAQuestion maQuestion = new MAQuestion();
for (int i = 0; i < 4; i++)
{
MAQuestionOption option = new MAQuestionOption();
option.Index = i;
maQuestion.OptionList.Add(option);
}
question = maQuestion;
}
break;
case QuestionType.FillInBlank:
{
FIBQuestion fibQuestion = new FIBQuestion();
question = fibQuestion;
}
break;
case QuestionType.Composite:
{
CPQuestion cpQuestion = new CPQuestion();
question = cpQuestion;
}
break;
}
question.DifficultyLevel = 3;
question.CreateTime = DateTime.Now.ToUniversalTime();
question.ModifyTime = DateTime.Now.ToUniversalTime();
return(question);
}
private IEnumerable <string> GetQuestionImageFiles(Question question)
{
foreach (string src in GetImageFiles(question.Content.Content))
{
yield return(src);
}
foreach (string src in GetImageFiles(question.Solution.Content))
{
yield return(src);
}
if (question is SelectableQuestion)
{
SelectableQuestion selectableQuestion = question as SelectableQuestion;
foreach (QuestionOption option in selectableQuestion.QuestionOptionCollection)
{
foreach (string optionImageSrc in GetImageFiles(option.OptionContent.Content))
{
yield return(optionImageSrc);
}
}
}
else if (question is FIBQuestion)
{
FIBQuestion fibQuestion = question as FIBQuestion;
foreach (QuestionBlank blank in fibQuestion.QuestionBlankCollection)
{
foreach (QuestionContent refAnswer in blank.ReferenceAnswerList)
{
foreach (string blankImageSrc in GetImageFiles(refAnswer.Content))
{
yield return(blankImageSrc);
}
}
}
}
else if (question is MAQuestion)
{
MAQuestion maQuestion = question as MAQuestion;
foreach (MAQuestionOption option in maQuestion.OptionList)
{
foreach (var optionImageSrc in GetImageFiles(option.LeftContent.Content))
{
yield return(optionImageSrc);
}
foreach (var optionImageSrc in GetImageFiles(option.RightContent.Content))
{
yield return(optionImageSrc);
}
}
}
else if (question is ESQuestion)
{
ESQuestion esQuestion = question as ESQuestion;
foreach (var refAnswerImageSrc in GetImageFiles(esQuestion.ReferenceAnswer.Content))
{
yield return(refAnswerImageSrc);
}
}
else if (question is CPQuestion)
{
CPQuestion cpQuestion = question as CPQuestion;
foreach (var subQuestion in cpQuestion.SubQuestions)
{
foreach (var subQuestionImageSrc in GetQuestionImageFiles(subQuestion as Question))
{
yield return(subQuestionImageSrc);
}
}
}
}
private void CreeateFIBQuestion(SectionBaseInfo info, Section section)
{
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
List <int> questionValueList = new List <int>();
Random rand = new Random((int)DateTime.Now.Ticks);
int valueA = 0, valueB = 0, valueC = 0;
int value = 0;
while (true)
{
int j2 = 0;
valueA = rand.Next(minValue, maxValue);
valueB = rand.Next(minValue, maxValue);
if (valueA > valueB)
{
value = valueA;
}
else if (valueA < valueB)
{
value = valueB;
}
else
{
continue;
}
j2 = value;
while (true)
{
if (j2 % valueA == 0 && j2 % valueB == 0)
{
valueC = j2;
break;
}
j2++;
}
break;
}
string questionText = string.Format("写出{0}和{1}的最小公倍数", valueA, valueB);
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.Content.Content = questionText;
fibQuestion.Content.ContentType = ContentType.Text;
section.QuestionCollection.Add(fibQuestion);
QuestionBlank blank = new QuestionBlank();
QuestionContent blankContent = new QuestionContent();
blankContent.Content = valueC.ToString();
blankContent.ContentType = ContentType.Text;
blank.ReferenceAnswerList.Add(blankContent);
fibQuestion.QuestionBlankCollection.Add(blank);
fibQuestion.Content.Content += blank.PlaceHolder;
}
private void CreateFIBQuestion(SectionBaseInfo info, Section section)
{
int minValue = 10;
int maxValue = 100;
if (info is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = info as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
Random rand = new Random((int)DateTime.Now.Ticks);
int tmpValue = maxValue;
decimal valueA = rand.Next(minValue, maxValue + 1);
Thread.Sleep(10);
decimal valueB = rand.Next(minValue, maxValue + 1);
Thread.Sleep(10);
decimal valueC = rand.Next(minValue, maxValue + 1);
decimal coeff = rand.Next(2, tmpValue + 1);
decimal symbol = rand.Next(0, 2);
// if (symbol == 0) // "+"
{
decimal result = coeff * valueA + valueB;
this.questionValueList.Add(result);
//string questionText = string.Format("已知");
//QuestionContent amn = new QuestionContent();
//QuestionPowerExponentPart an = new QuestionPowerExponentPart();
//an.BaseNumber.Content = "a";
//an.Power.Power.Content = "n";
//amn.QuestionPartCollection.Add(an);
//QuestionPowerPart mn = new QuestionPowerPart;
//QuestionPowerExponentPart mnpart = new QuestionPowerExponentPart();
//mnpart.BaseNumber.Content = "m";
//mnpart.Power.Power.Content = "n";
//mn.Power.QuestionPartCollection.Add(mnpart);
//amn.QuestionPartCollection.Add(mn);
//已知a^m=2,a^n=8,求：a^(m+n)；\n第一步, ", coeff, valueB, result);
QuestionPowerExponentPart am = new QuestionPowerExponentPart();
am.BaseNumber.Content = "a";
am.Power.Power.Content = "m";
QuestionPowerExponentPart an = new QuestionPowerExponentPart();
an.BaseNumber.Content = "a";
an.Power.Power.Content = "n";
QuestionPowerExponentPart a_m_add_n = new QuestionPowerExponentPart();
a_m_add_n.BaseNumber.Content = "a";
a_m_add_n.Power.Power.Content = "m+n";
//第一步，移项 {0}×x = {2} - {1}
FIBQuestion fibQuestion = new FIBQuestion();
fibQuestion.QuestionBlankCollection.Add(am);
fibQuestion.QuestionBlankCollection.Add(an);
fibQuestion.QuestionBlankCollection.Add(a_m_add_n);
fibQuestion.Content.Content = string.Format("已知{0}={1},{2}={3},求：{4}。",
am.PlaceHolder, valueA, an.PlaceHolder, valueB, a_m_add_n.PlaceHolder);
//fibQuestion.Content.Content = questionText;
//fibQuestion.Content.ContentType = ContentType.Text;
//fibQuestion.ShowBlankInContent = true;
QuestionBlank blankA = new QuestionBlank();
blankA.MatchOwnRefAnswer = true;
QuestionContent blankContentA = new QuestionContent();
blankContentA.Content = coeff.ToString();
blankContentA.ContentType = ContentType.Text;
blankA.ReferenceAnswerList.Add(blankContentA);
fibQuestion.QuestionBlankCollection.Add(blankA);
fibQuestion.Content.Content += blankA.PlaceHolder;
fibQuestion.Content.Content += " ×x= ";
QuestionBlank blankB = new QuestionBlank();
blankB.MatchOwnRefAnswer = true;
QuestionContent blankContentB = new QuestionContent();
blankContentB.Content = result.ToString();
blankContentB.ContentType = ContentType.Text;
blankB.ReferenceAnswerList.Add(blankContentB);
fibQuestion.QuestionBlankCollection.Add(blankB);
fibQuestion.Content.Content += blankB.PlaceHolder;
fibQuestion.Content.Content += " - ";
QuestionBlank blankC = new QuestionBlank();
blankC.MatchOwnRefAnswer = true;
QuestionContent blankContentC = new QuestionContent();
blankContentC.Content = valueB.ToString();
blankContentC.ContentType = ContentType.Text;
blankC.ReferenceAnswerList.Add(blankContentC);
fibQuestion.QuestionBlankCollection.Add(blankC);
fibQuestion.Content.Content += blankC.PlaceHolder;
//第二步{0}×x = {3}
fibQuestion.Content.Content += " \n第二步, ";
QuestionBlank blankA1 = new QuestionBlank();
blankA1.MatchOwnRefAnswer = true;
QuestionContent blankContentA1 = new QuestionContent();
blankContentA1.Content = coeff.ToString();
blankContentA1.ContentType = ContentType.Text;
blankA1.ReferenceAnswerList.Add(blankContentA1);
fibQuestion.QuestionBlankCollection.Add(blankA1);
fibQuestion.Content.Content += blankA1.PlaceHolder;
fibQuestion.Content.Content += " ×x= ";
decimal valueB1 = result - valueB;
QuestionBlank blankB1 = new QuestionBlank();
blankB1.MatchOwnRefAnswer = true;
QuestionContent blankContentB1 = new QuestionContent();
blankContentB1.Content = valueB1.ToString();
blankContentB1.ContentType = ContentType.Text;
blankB1.ReferenceAnswerList.Add(blankContentB1);
fibQuestion.QuestionBlankCollection.Add(blankB1);
fibQuestion.Content.Content += blankB1.PlaceHolder;
//第三步，两边除以系数{0}，{0}÷{0}×x = {3}÷{0}
fibQuestion.Content.Content += " \n第三步, ";
QuestionBlank blankA2 = new QuestionBlank();
blankA2.MatchOwnRefAnswer = true;
QuestionContent blankContentA2 = new QuestionContent();
blankContentA2.Content = coeff.ToString();
blankContentA2.ContentType = ContentType.Text;
blankA2.ReferenceAnswerList.Add(blankContentA2);
fibQuestion.QuestionBlankCollection.Add(blankA2);
fibQuestion.Content.Content += blankA2.PlaceHolder;
fibQuestion.Content.Content += " ÷ ";
QuestionBlank blankB2 = new QuestionBlank();
blankB2.MatchOwnRefAnswer = true;
QuestionContent blankContentB2 = new QuestionContent();
blankContentB2.Content = coeff.ToString();
blankContentB2.ContentType = ContentType.Text;
blankB2.ReferenceAnswerList.Add(blankContentB2);
fibQuestion.QuestionBlankCollection.Add(blankB2);
fibQuestion.Content.Content += blankB2.PlaceHolder;
fibQuestion.Content.Content += " ×x= ";
QuestionBlank blankC2 = new QuestionBlank();
blankC2.MatchOwnRefAnswer = true;
QuestionContent blankContentC2 = new QuestionContent();
blankContentC2.Content = valueB1.ToString();
blankContentC2.ContentType = ContentType.Text;
blankC2.ReferenceAnswerList.Add(blankContentC2);
fibQuestion.QuestionBlankCollection.Add(blankC2);
fibQuestion.Content.Content += blankC2.PlaceHolder;
fibQuestion.Content.Content += " ÷ ";
QuestionBlank blankD2 = new QuestionBlank();
blankD2.MatchOwnRefAnswer = true;
QuestionContent blankContentD2 = new QuestionContent();
blankContentD2.Content = coeff.ToString();
blankContentD2.ContentType = ContentType.Text;
blankD2.ReferenceAnswerList.Add(blankContentD2);
fibQuestion.QuestionBlankCollection.Add(blankD2);
fibQuestion.Content.Content += blankD2.PlaceHolder;
//第四步，x={4}
fibQuestion.Content.Content += " \n第四步, ";
fibQuestion.Content.Content += " x= ";
decimal valueA3 = valueB1 / coeff;
QuestionBlank blankA3 = new QuestionBlank();
blankA3.MatchOwnRefAnswer = true;
QuestionContent blankContentA3 = new QuestionContent();
blankContentA3.Content = valueA3.ToString();
blankContentA3.ContentType = ContentType.Text;
blankA3.ReferenceAnswerList.Add(blankContentA3);
fibQuestion.QuestionBlankCollection.Add(blankA3);
fibQuestion.Content.Content += blankA3.PlaceHolder;
//∴x={4}是方程的解
fibQuestion.Content.Content += string.Format(" \n∴ x=");
QuestionBlank blankA4 = new QuestionBlank();
blankA4.MatchOwnRefAnswer = true;
QuestionContent blankContentA4 = new QuestionContent();
blankContentA4.Content = valueA3.ToString();
blankContentA4.ContentType = ContentType.Text;
blankA4.ReferenceAnswerList.Add(blankContentA4);
fibQuestion.QuestionBlankCollection.Add(blankA4);
fibQuestion.Content.Content += blankA4.PlaceHolder;
fibQuestion.Content.Content += "是方程的解。";
fibQuestion.Solution.Content = string.Format(
"公式逆运用，第一步，移项 {0}×x={2}-{1}；第二步{0}×x={3}；第三步，两边除以系数{0}，{0}÷{0}×x={3}÷{0}；第四步，x={4}；答案，∴x={4}是方程的解。",
coeff, valueB, result, result - valueB, (result - valueB) / coeff);
section.QuestionCollection.Add(fibQuestion);
}
// else // "-"
{
}
}