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【判断题】
有的类定义时可以不定义构造函数，所以构造函数不是必需的。()A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Hytner repeatedly complains that people are cheated, then who cheated them according to the passage?
A.
The play.
B.
The modern education.
C.
The directors.
D.
The history.
【简答题】一6水杯装水 8 五 千克．求36水杯装水我手千克，也就是求______的______是我手，算式是______．
【单选题】No wonder his wife complains him. No one can bear him ________ at home, doing nothing day after day. [ ]
A.
stay
B.
staying
C.
to stay
D.
stayed
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