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【单选题】
关于DNA分子结构的叙述,不正确的是A.
一般都含有四种脱氧核苷酸
B.
碱基之间的化学键是氢键
C.
脱氧核糖和磷酸交替连接排列在内侧，构成基本骨架
D.
由两条反向平行的脱氧核苷酸链盘旋成双螺旋结构
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【单选题】听力原文：M: How about going for a walk with me before we go to the dancing party? W: What a good idea! Q: What will they do next? (19)
A.
Go to work.
B.
Take a walk.
C.
Attend a dancing party.
D.
Go to a restaurant.
【单选题】W：How about going to the concert tonight? There's a world famous band playin
A.
M：It would be fin
B.
But I've got a lot of homework to do. Q：What does the man mean?
C.
He will go to the concert.
D.
He has been to the concert.
E.
He is not interested in the concert.
F.
He can't go to the concert.
【单选题】听力原文：W：How about going to the concert tonight? There's a world famous band playing． M：It would be fine．But I've got a lot of homework to do. Q：What does the man mean? (2)
A.
He will go to the concert.
B.
He has been to the concert.
C.
He is not interested in the concert.
D.
He can't go to the concert.
【单选题】听力原文：W: Are you doing anything special tonight? M: No, why? W: How about going to see a movie? It will do you good to get your mind off your work for a while. M: That's a good idea. But what shall we ...
A.
Yes.
B.
No.
C.
Yes, but it should be after 8 p. m..
【简答题】Where does F come from?
【单选题】Where does Fabian come from?
A.
He is from Australia.
B.
He is from Columbia.
C.
He is from Columbia.
【简答题】Where does F study?
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