答案解析
1. 答案：c. Most drivers feel uncertain about the safety of self-driving cars.
解析：本题为细节题， 由but 75% of drivers say they wouldnt feel safe in such a vehicle. Still. 60% of drivers would like to get some kind of self-driving feature, such as automatic braking or self-parking, the next time they buy a new car. 可知：75%的司机感觉在这种自动驾驶车里面不安全，也就是说大多数司机对自动驾驶车的安全性持怀疑态度，因此正确答案为C选项。
2. 答案：a. their drivers would feel safe after getting used to the automatic devices.
解析：本题为细节题， 由said tests suggest drivers may be overestimating their own abilities. He also believes they will be more likely to trust self-driving cars as they become more familiar with features such as automatic braking or parking. He estimated that the comfort level will increase considerably in five to ten years.可知：John Nielsen 说，司机们可能过高的高估了他们自己的驾驶能力，他也相信当司机熟悉了自动驾驶车的功能，像自动刹车或自动停车等，他们就会更加相信自动驾驶车，因此正确答案为A选项。
3. 答案：c. a series of injuries to snowmobile drivers.
解析：本题为主旨题， 由One dog has been killed and multiple dogs have been injured by a snowmobile driver in what appears to be an intentional attack on competitors in the Iditarod Race in Alaska.可知：在阿拉斯加雪橇比赛中，一只狗被杀，多条狗受伤是因为竞争对手恶意攻击所致,也就是说在这场比赛中竞争对手的蓄意攻击。因此正确答案为C选项。
4. 答案：B. He has won the alaska iditarod race four times.
解析：本题为细节题， 由Then Jeff King，a four-time champion， reported a similar attack. 可知：他在Alaska Iditarod Race 中赢得了四次比赛。因此正确答案为B选项。
5. 答案：d. it turned over because of strong winds.
解析：本题为细节题， 由A tour boat turned over off the coast of Nicaragua，和后面的Nicaraguan naval authorities had banned sea travel in the area because of bad weather and strong winds，but the tour boat proceeded anyway.可知：在文章开头部分也说到船翻了，在后文中又说到恶劣的天气和强风，由此联系起来可以推断出因为强风导致的翻船事故，因此正确答案为D选项。
6. 答案：d. 32.
解析：本题为细节题，由The boat was carrying 32 people 可知：船上总共载有32名人员，因此正确答案为D选项。
7. 答案：B. He is being investigated by the police.
解析：本题为细节题， 由Blandon, the boats owner, has been arrested by Nicaraguan authorities,可知：船长被警方逮捕，其他选项文中并没有提及，因此正确答案为B选项。
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聊斋故事 促织