In 1942, the HMS Edinburgh was sunk in the Barents Sea. It was on its【21】______back to Britain with ninety-one boxes of Russian

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问题     In 1942, the HMS Edinburgh was sunk in the Barents Sea. It was on its【21】______back to Britain with ninety-one boxes of Russian gold.【22】______thirty-nine years it lay there, too deep for divers to【23】. No one was allowed to explode it, either, since the bodies of sixty of the crew also lay in the【24】______. Then, in 1981, an ex-diver called Jessop decided to try using new diving techniques.
    【25】______he could not afford to finance the【26】______which was going to cost four million pounds, he had to look for people who were【27】______to take the risk.【28】______, they were not even sure the gold was going to be there! First a Scottish diving company, then a German shipping company agreed to join in the retrieval【29】______. Not long after that, Jessop【30】______a fourth company to take a【31】______.Since the gold was the【32】______of the British and the Soviet governments, they both hoped to make a【33】______, too! The biggest problem was how to get【34】______the gold. Fortunately, they were able to examine the Edinburgh’s sister ship, the HMS Belfast, to【35】______out the exact location of the bomb room, 【36】______the gold was stored.
    They knew it was to be an extremely difficult and dangerous undertaking. To reach the gold, they would have to cut a large square【37】______the body of the ship, go through the empty fuel tank and down to the bomb room. After twenty-eight dives, they【38】______to find the first bar. Everyone worked【39】______the clock, helping to clean and stack the gold, 【40】______as to finish the job as quickly as possible.
【22】

选项 A、During
B、For
C、At
D、Since

答案B

解析 这四个介词都可以用来表示时间,但用法却不尽相同。during在…期间,当…之时,用来表示一段时间;for持续达,计,后面常跟具体的时间段,如:for five months;at在…时刻,通常指时间的某一点,如at eight o’clock;since自从…之后,要与现在完成时连用。根据句意“这艘巡洋舰三十九年以来就一直沉于海底”可知,此处需要一个表示时间段的介词,且能够与“三十九年”搭配,只有for符合要求,故选B。
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