单选题 《复合题被拆开情况》 In 1942, the HMS Edinburgh was sunk in the Barents Sea. It was on its 【C1】________back to Britain with ninety-one boxes of Russian gold. 【C2】________thirty-nine years it lay there, too deep for divers to【C3】________ No one was allowed to explode it, either, since the bodies of sixty of the crew also lay in the【C4】________. Then, in 1981, an ex-diver called Jessop decided to try using new diving techniques. 【C5】________he could not afford to finance the【C6】________which was going to cost four million pounds, he had to look for people who were 【C7】________to take the risk. 【C8】________, 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【C9】________Not long after that, Jessop【C10】________a fourth company to take a【C11】________Since the gold was the【C12】________of the British and the Soviet governments, they both hoped to make a【C13】________, too! The biggest problem was how to get【C14】________the gold. Fortunately, they were able to examine the Edinburgh’s sister ship, the HMS Belfast, to【C15】________out the exact location of the bomb room, 【C16】________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【C17】________the body of the ship, go through the empty fuel tank and down to the bomb room. After twenty-eight dives, they 【C18】________to find the first bar. Everyone worked【C19】________the clock, helping to clean and stack the gold,【C20】________as to finish the job as quickly as possible.《问题》：【C11】