第7题: [单项选择]对类的构造函数和析构函数描述正确的是( )。 A. Redim a As Integer B. Static a As Integer C. Public a As Integer D. Dim a As Integer 参考答案:B 答案解析:C++中用友元函数重载运算符至少有一个参数,重载一目运算符要有一个参数,重载二目运算符要有两个参数。
第8题: [单项选择]The best title for this passage is ______. A. The Basic Function of Genetic Engineering B. New Applications of Genetic Engineering C. Recombinant DNA Technology: A New Process in Genetic Engineering D. The Promises & Dangers of Technological Development 参考答案:C