Woman: Oh, dear! I'm afraid I fail again in the national test. It's the third time I took it.Man: Don't be too upset. I have the same fate. Let's try a fourth time.Question: What does the man mean

A．He is sure they will succeed in the next test.

B．He did no better than the woman in the test.

C．He believes she will pass the test this time.

D．He felt upset because of her failure.

在竖向分区给水方式中，其中气压水罐并列给水方式的优点有（）。

A．水质卫生条件比较好

B．水泵启动不频繁、能耗小

C．水压变化幅度较小

D．给水压力可在一定范围内调节