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【简答题】
汽车废气是一种排放部位低、不易扩散的移动污染源，是大气污染的重要源头，其影响面最宽，危害最大。请问，汽车尾气中的污染物主要包括哪些?对人类有什么危害?什么叫机动车尾气排放因子?
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【简答题】垲 k 荜哕柝 t 贲 n 祜艏 s 矧 sn
【单选题】When I was a child，I ________ watch TV whenever I wanted to. (2013·江西，29)
A.
should
B.
could
C.
must
D.
need
【单选题】Woman: I cant figure out whats wrong with my watch. It was just a month ago that I had it repaired. Man: Dont waste your time and money any more. Its a very old watch and it is quite worn out. Questio...
A.
It will take about one month to repair the watch.
B.
The woman should have saved more money.
C.
It is a good idea to keep the old watch.
D.
The watch is no longer worth repairing.
【单选题】(2013·江西高考)When I was a child, I ________ watch TV whenever I wanted to.
A.
should
B.
could
C.
must
D.
need
【单选题】(2013·高考江西卷)When I was a child，I________watch TV whenever I wanted to.
A.
should
B.
could
C.
must
D.
need
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