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【单选题】
除去乙烷中混有的少量乙烯,最好的方法是A.
将混合气体点燃
B.
将混合气体通过溴水
C.
将混合气体在催化剂条件下跟氢气反应
D.
将混合气体通过酸性KMnO4溶液
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反馈参考答案：
举一反三
【单选题】You look _____ now. You'd better go to bed. [ ]
A.
slept
B.
asleep
C.
sleepy
D.
sleeping
【单选题】Your hair is too long. You'd better go to _____. [ ]
A.
the shop
B.
the bookshop
C.
the barber's
D.
the doctor's
【单选题】You'd better go to bed early if you ______ to get up early tomorrow.
A.
don't want
B.
want
C.
will want
【单选题】-- My cat's ill .She won't eat anything . -- _____
A.
You'd better go to the clinic .
B.
Why not go and get something to eat ?
C.
If I were you ，I'd go on a diet .
D.
You should take her to the vet .
【简答题】植物名: 所属科名: 入药部位:
【单选题】《中国药典》(2005年版)规定称取药物约0.1g时，应称取药物的重量应为
A.
0.10g
B.
0.11g
C.
0.09g
D.
0.06～0.14g
E.
0.09～0.11g
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