Over the years, pregnant women have asked Donald Redelmeier, at Toronto’s Sunnybrook Hospital, about the dangers of diving, hot

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问题     Over the years, pregnant women have asked Donald Redelmeier, at Toronto’s Sunnybrook Hospital, about the dangers of diving, hot tubs, flying, mountaineering, cycling, bear attacks and all sorts of other exotic risks,【C1】________they never【C2】________road accidents. His new study, published in the Canadian Medical Association Journal,【C3】________they should.
    Dr. Redelmeier and his colleagues wanted to know【C4】________pregnancy makes a woman driver more likely to be【C5】________in a car crash. So they【C6】________data from the Ontario Health Insurance Plan, which records health visits for the Canadian province’s 13m residents. The researchers【C7】________women who, in the months before giving birth,【C8】________a hospital emergency unit after a car accident in which they had been driving. They【C9】________looked at those women’s hospital visits in the three years before becoming pregnant and for one year【C10】________the birth.
    They found that being pregnant made the women 42% more likely to be in a serious car crash. The【C11】________peaked in the fourth month of pregnancy. It seems that being pregnant is about as【C12】________for drivers as having sleep apnoea, which【C13】________people to snore and choke themselves awake throughout the night, leaving them【C14】________during the day.
    Women’s driving seemed to be affected【C15】________how rich or poor or old they were, whether their pregnancy was【C16】________or straightforward, or whether they already had children. To 【C17】________the possibility that pregnant women simply had an increased【C18】________to seek care— or,【C19】________layman’s terms, were neurotic—they looked at whether they were more likely to go to hospital when involved in crashes that they did not cause,【C20】________they were passengers or pedestrians. The answer was "no".
【C9】

选项 A、thus
B、then
C、rather
D、instead

答案B

解析 then。本题考查副词辨析。四个选项分别为A项thus“因此”;B项then“然后”;C项rather“相反”;D项instead“代替、却”。由于该段几个句子逻辑上是递进关系,故该空应该填入能表现出递进的逻辑词,答案为then。thus体现的是因果逻辑;rather和instead体现的是转折逻辑。故本题答案为B项。
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