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【单选题】
对大环内酯类抗生素的描述,错误的是:A.
抗菌谱窄，比青霉素略广
B.
细菌对本类各药间有完全的交叉耐药性
C.
酯化衍生物可增加口服吸收
D.
口服主要不良反应为胃肠道反应
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【简答题】砖按生产工艺可以分为( )
【简答题】"Won't you do any other subject?"—"Well, it is not decided yet . I don't particularly want to do geology. Astronomy would be quite good, if I'm allowed to do it."
【单选题】—What are you going to do next year? —______. [ ]
A.
I was thinking of it
B.
I have decided to be a singer
C.
I studied in Peking University
D.
I'm not sure. Maybe I will study abroad
【单选题】听力原文：I decided not to do the job, knowing it would take me several days to do it all by myself. Why didn't I do the job?
A.
Because it would be too time-consuming.
B.
Because I wanted to do it myself.
C.
Because nobody had done it before.
D.
Because nobody joined me.
【单选题】I'm going for a field trip but I haven't decided_________.
A.
what to do
B.
to do what
C.
where to go
D.
to go where
【单选题】_______that I could use a kite to attract lighting, I decided to do an experiment.
A.
Having realized.
B.
Realize
C.
To realize
D.
Realized.
【单选题】________that I could use a special piece of cloth to attract people's attention, I decided to do an experiment.
A.
Having realized
B.
Realizing
C.
Being realized
D.
Realized
【单选题】Under no circumstances _____ that I would meet so many problems when I decided to take the job．
A.
do I expected
B.
have I expected
C.
I expected
D.
did I expect
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