public void CutTest()
        {
            ReadFile dictionary;

            dictionary = new ReadFile();
            const string STRING = "ABCD>>>哈哈哈";
            const string STR    = "ABCD";
            const string STR1   = "哈哈哈";

            dictionary.Cut(STRING);
            Assert.AreEqual(dictionary.GetElements().Last <Word>()._english, STR);
            Assert.AreEqual(dictionary.GetElements().Last <Word>()._chinese, STR1);
        }