4.The main purpose of this text is to ________.

　　A.show how hybrid cars slow down

　　B.encourage people to buy hybrid cars

　　C.inform people of a kind of energy­saving car

　　D.explain why hybrid cars use less energy

　　1．解析：选D　细节理解题根据第三段第二句“Hybrid cars have much smaller ... use less petrol.”可知混合动力车必要时有电力支持所以消耗较少的能源解析：选B　细节理解题根据第三段可知混合动力车用电动马达减速而不是用传统的刹车电动马达降低车速时产生的电能会被自动储存在电池里而传统汽车浪费了刹车时产生的能量由此可知B项表述正确解析：选A　推理判断题根据最后一段中的“As they use less fuel, hybrid cars ... for free.”可推知使用混合动力车有很多好处所以混合动力车会很受欢迎解析：选C　写作意图题本文主要介绍了一种节约能源的车——混合动力车故应选择CC

　　When was the last time you did something really fun with one of your parents—just the two of you?

　　Parents who take their young children to music，swimming and art classes often stop arranging such activities once their kids are older and in school all day.But it doesn’t have to be that way.Doing something enjoyable with your kids just might make you look at each other in a whole new way，especially if you do it through a class or an event.When parent and child become students together，it puts them on the same level，at least for a while.

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