1．What's the advantage of driving a little car?

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　　2．If big cars are still used along with the small ones，how many sets of roads will be built?

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　　【答案】　1.There will be less pollution.There will be more parking space in the cities.The streets will be less crowded.

　　2．Two.Some for the big，fast cars and the other roads for the small，slower ones.

　　Section Ⅰ　Warm­up & On Your Bike-Preparing

　　根据提示写出下列单词

　　1．________n．　　 渡船

　　2．________vi.&n. 得益；好处

　　3．________adj. 方便的，便利的

　　4．________n. 街坊；邻近地区

　　5．________adv. 无论在何处，无论到哪里

　　6．________n. 小偷，贼

　　7．________vt. 插入，嵌入

　　8．________adv. 当然，确实

　　9．________n. 结果，后果

　　10．________vt. 逮捕，拘留

　　11．________n. 骨头

　　12．________vi. 争辩

【答案】　1.ferry　2.benefit　3.convenient 4．neighbourhood　5.wherever