诗句"忽如一夜春风来，千树万树梨花开"描写的是哪个季节的景色？（）
A、春天
B、夏天
C、秋天
D、冬天
参考答案：D
Ever since the Greens moved to the country a year ago, they________better health.[ ]
A. are enjoying
B. have been enjoying
C. could have enjoyed
D. had enjoyed
静态成员函数没有 ______。
A．返回值
B．this指针
C．指针参数
D．返回类型
