单项选择题

梁达到承载能力极限状态是指达到()。

A、第一阶段末
B、第二阶段末
C、第三阶段末

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单项选择题

The mouse never _______ too far from it hole.

A.goes
B.comes
C.ventures
D.returns

单项选择题

Philip: Danny, I got fired this morning. Could you help me?

Danny: How come? Last time I saw you, you told me it was a good job and you would like to take it as a career.
Philip: ________________ In a word, I didn’t do a good job of it.
A、I have many words to say.
B、There is much to discuss.
C、It’s a long story.
D、It’s a long-time talk.