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第12题单选 It is __________ that text messaging while driving is dangerous.
A.necessary B.sufficient C.obvious D.significant 参考答案：C
第13题单选 My secretary usually opens my post__________ it’s marked“private”.
A.unless B.if C.as D.for 参考答案：A
第14题单选 Several novels by Mo Yan __________ into English so far. A.are translated B.have been translated
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C.were translated D.had been translated 参考答案：B
第15题单选 The pianist didn’t __________ until the last minute before the concert.
A.turn off B.turn on C.turn out D.turn up 参考答案：D 第16题单选 The old man，together with his neighbors，__________ the performance when it began to rain. A.was enjoying B.were enjoying C.has enjoyed D.have enjoyed 参考答案：A
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第17题单选 My teacher recommended that l__________ as careful as possible when I took an exam.
A.am B.were C.be D.will be 参考答案：C
第18题单选 Let’s go to the airport a little earlier __________ we can choose better seats.
A.by that B.so that C.for that D.now that 参考答案：B
第19题单选 Jason made sharp comments on Mary’s idea，but he didn’t mean __________ her.
A.Hurt
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B.Hurting C.to hurt D.to be hurt 参考答案：C
第20题单选 ——I’m sorry about the misunderstanding. 一You__________ apologize，it wasn’t your fault. A.couldn’t B.mustn’t C.wouldn’t D.needn’t 参考答案：D
Ⅲ. Cloze ( 30 points) Directions:For each blank in the following passage, there are four choices marked A, B, Cand D. Choose the one that is most suitable and mark your answer by blackening the corres-ponding letter on the Answer Sheet.
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Where do cars get their energy from? For most cars，the answer is petrol. 21___________some cars use electricity.These cars have 22 __________motors that get their power from large batteries.
In 23 ，there are even cars that have 24__________ an electric motor and a petrol motor.These types of cars are 25__________ hybrid(混合)cars.
Most people tend to think of electric cars as a new 26 __________，but they have been around for a long time.In the 27__________ 19th and early 20th centuries electric cars were common because the technology for petrol engines was not very advanced. But 28__________ the petrol engine became easier to make and more powerful，this type of engines became the most 29 __________.Interest in electric cars was high in the l970s and 1980s because 30__________ became very expensive.
Recently，electric cars have again become well-liked because people want cars that pollute 31__________ . Electric cars are better than petrol cars 32__________ several ways.The biggest benefit is reduced pollution. In areas 33__________ there is a high percentage of electric cars，pollution is not that serious.The second benefit of electric cars is a 34 __________in the dependence on foreign oil.