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- 2015-10-25
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- 1970-1-1
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Coffee prices rose sharply Monday, posting their biggest one-day gain in almost
three years, after a weekend cold snap in Brazil raised concern that there could be
damage to the world’s largest crop when at a time with supplies already tight.
(A) that there could be damage to the world’s largest crop when at a time
with supplies
(B) that the world’s largest crop could be damaged at a time such as when
supplies are
(C) that the world’s largest crop could be damaged at a time when supplies
are
(D) of the world’s largest crop possibly being damaged at a time with
supplies
(E) of possibly damaging the world’s largest crop at a time that supplies
were
其答案是C,但是对于C中的when supplies are,这个一般现在时不太明白,
因为通篇都是过去时,难道不应该是were吗?
求高手指导~~~~~~~~谢谢
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