=（）。
A．0
B．1
C．e2
D．e-2
参考答案：D
解析：
由重要极限
下列是重载乘法运算符的函数原型声明，其中错误的是
A．MyClass operator * (double, doubl;
B．MyClass operator * (double, MyClas;
C．MyClass operator * (MyClass, doubl;
D．MyClass operator * (MyClass, MyClas;
The man I _____ yesterday is Mr. White. [ ]
A. paid a visit
B. had a talk
C. dropped in
D. came across
=（）。
=（）。