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【单选题】
阿托品对胆碱受体的作用是A.
对M、N胆碱受体有同样阻断作用
B.
对N1、N2胆碱受体有同样阻断作用
C.
对M胆碱受体具有高度选择性的阻断作用，大剂量也阻断N1胆碱受体
D.
对M胆碱受体具有高度选择性的阻断作用，大剂量也阻断N2胆碱受体
E.
对M胆碱受体具有高度选择性的阻断作用，对N胆碱受体无影响
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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】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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