3、汽车在隧道内行驶时，安全车距正比于车速的平方与车身长(m)的积，且安全车距不得小于半个身长，假设车身长约为4m，车速为60km/h，安全车距为1.44个车身长．写出d与v之间的函数关系式： 　　

2、某商品进货单价为40元，若按50元一个销售，则能卖出50个；若销售单价每涨1元，则销售量就减少一个。为了获得最大利润，则该商品的最佳售价为　　　　 元．

1、有一根长为6cm，底面半径为0.5cm的圆柱型铁管，用一段铁丝在铁管上缠绕4圈，并使铁丝的两个端点落在圆柱的同一母线的两端，则铁丝的长度最少为　　 cm．

根据对话内容，在下面横线上写出适当的单词，使对话通顺、完整。

Cindy：　 Hi, Leon. How are you?

Leon：　　 Hi, Cindy. I’m OK. Only a 　1　 　busy.

Cindy：　 Can you come to the movie today?

Leon：　　 Sorry, I 　2　 . I have to study.

Cindy：　 You always have to 　3　 . Have some fun today! There’s a good comedy showing.

Leon：　　 We are going to 　4　 　a math test tomorrow, you know. I’m going to the library. You should come， 　5　 .

Cindy：　　　　　　　　　　　　　　 I know. What time are you 　6　 　to the library?

Leon：　　 　 7　 　three o’clock.　 Are you coming 　8　 　me? We can study together.

Cindy：　 How 　9　 　are you staying there?

Leon：　　 Until about five o’clock. I have to go home to 　10　 　dinner at six o’clock.

1．___________　　 2．___________　　 3．___________　　 4．___________　　 5．___________

6．___________　　 7．___________　　 8．___________　　 9．___________　　 10．___________

Ⅴ．书面表达。(15分)

今天天气晴朗，我们班同学一起去北温泉(the North Hot Spring Park)游玩，请写一篇日记，记述这次活动情况。日记必须包含出发时间、出发地点；离学校的公里数，(可假设) 交通工具以及路程所花时间；在北温泉内所玩的活动项目，可列举一、二件活动说明；午餐及午餐时间；回家的方式，所花时间以及本次活动的费用等。词数60词左右。

Saturday　　　　　　　　　 October 21　　　　　　　　　 　　　　Sunny

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(命题人：黎冬梅　　　 审题人：冯世伟)

西南师大附中2009-2010学年度上期期中考试

1．___________　　　 2．___________　　 3．___________　　 4．___________　　 5．___________

9．　 至于今天的作业，你最好问问萨姆。

___________ for today’s homework, you’d better ask Sam.

Ⅲ．交际用语。(每空1分，共5分)

A：　 1　 , boy?

B：I think I have a cold. I feel terrible.

A：　 2　

B：No, my body temperature(温度) is all right. But I have a headache and a sore throat.

A：Open your mouth and let me see. Oh, 　3　 　Please take the medicine on time, you’ll be better soon.

B：But I feel so bad, doctor. 　4　

A：Don’t worry. 　5　 　They are good for your health.

8．　 天下雨时，我打的去上学。

When it ___________, I ___________ a taxi to work.

7．　 It’s two hours’walk from here to the subway station. (对划线部分提问)

____________　 ________________ is it from here to the subway station?

6．　 It took my mom five hours to make the big meal. (同义句)

My mom ____________　 five hours _____________ the big meal.

5．　 We often go hiking in spring. (用tomorrow改写)

We ___________　 ___________　 ___________ tomorrow.