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【单选题】
头孢氨苄分子中含有A.
氢化噻嗪环
B.
氢化噻唑环
C.
内酯环
D.
喹啉
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反馈参考答案：
举一反三
【单选题】听力原文：W: I thought Tom said he got As in all his tests. M: Mary, you should know better than to take Tom's words too seriously. Q: What does the man mean? (14)
A.
Tom is very responsible.
B.
Tom's words aren't reliable.
C.
What Tom said is true.
D.
Tom is not humorous at all.
【单选题】—He must be in the reading-room now. We will find him there. ---No, he _____.Tom said he was ill at home .
A.
must not
B.
can’t
C.
may not
D.
should not
【单选题】Tom said he ( )with us if he ( )free the next day.
A.
will go, is
B.
went, were
C.
would go, was
D.
will go, was
【简答题】Python的浮点数占 个字节。A. 8
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