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【多选题】
烷化剂是一类可形成碳正离子或亲电性活性基团的化合物,具有特征之一是A.
双-氯乙胺
B.
乙烯亚胺
C.
磺酸酯
D.
亚硝基脲
E.
多肽
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【单选题】— How was your holiday? — It couldn’t have been _____. I just stayed in the hotel because it was raining most of the time.
A.
boring
B.
more boring
C.
most boring
D.
less boring
【多选题】She ________ her book and lit a cigarrette.
A.
set apart
B.
set aside
C.
set off
D.
set down
【单选题】I’ve never been to Beijing ,but it’s the place _________.
A.
where I’d like to visit
B.
I most want to visit
C.
in which I’d like to visit
D.
that I most want to it visit
【单选题】听力原文： Brazil's Environmental Ministry says the rate of deforestation of the Amazon rainforest has increased by about 15 per cent over the last year. Officials say logging and clearing land for farming...
A.
the rate of deforestation of the Amazon rainforest has increased about 15 percent over last year
B.
the rate of air pollution has increased about 15 percent over last year
C.
the rate of land decreasing has increased about 15 percent over last year
D.
the amount of rainfall has increased about 15 percent over last year
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