Over the years, pregnant women have asked Donald Redelmeier, at Torontos 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 if【C4】______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 provinces 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 womens 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 a-wake throughout the night, leaving them【C14】______during the day. Womens 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】______laymans 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' . 【C1】