---- What would you like to drink ?---- It doesn’t matter. ________ will do .
A. Something
B. Everything
C. Nothing
D. Anything
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This question is very difficult . _______ people can understand it.
A. Little
B. A few
C. Few
D. A little
---- ________ do you write to your penfriend ?- --- About twice a month.
A. How long
B. How much
C. How soon
D. How often
I would be willing to attend an interview at any time (suit) ______ for you.
在丁-3-烯醛分子中含有( ) 个σ键,( ) 个π键
A. 12,1
B. 10,210,2 - 正确
C. 8,2
D. 9,2