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【单选题】
某生产商为对冲其原材料价格大幅上涨风险,最适宜采取( )策略。A.
卖出看涨期权
B.
卖出看跌期权
C.
买进看涨期权
D.
买进看跌期权
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【简答题】病毒是严格的 __,它只能在__ __内繁殖,其繁殖过程可分为__ _、___ __、_ ___、______和_____五个阶段。
【单选题】听力原文： It was not until one hundred and fifty years ago that scientists learned about the existence of dinosaurs. Thanks to an English doctor and his wife, the door was opened to this zoological study....
A.
Beasts.
B.
Herbivorous.
C.
Carnivorous.
D.
Dinosaurs.
【简答题】Although man has known asbestos （石棉） for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H.W.Johns, owner of a New York Cit...
【简答题】It was Monday. Mrs. Smith’s dog was hungry，but there was not any meat in the house. Thinking that there was no 46 way, Mrs. Smith took a piece of paper, and wrote the following words 47 it:“Give my do...
【单选题】Bach died in 1750,but it was not until the early 19th century his musical gift was fully recognized.
A.
while
B.
though
C.
that
D.
after
【单选题】It was not until the 4th century ( ) the church in Rome began to celebrate Christmas.
A.
that
B.
when
C.
as
D.
unless
【单选题】理想与空想的区别在于( )。
A.
想是人们的主观意志和想当然
B.
会实践是科学知识产生的源泉
C.
理想变为现实，要靠实实在在的实践
D.
了坚定的信念，理想就会自动变为现实
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