问题 单项选择题

下列关于昆虫的肢的叙述中,错误的是()。

A.昆虫的头、胸、腹三部分各长有1对足

B.昆虫的3对足分别称为前足、中足、后足

C.螳螂、蝼蛄的前足分别演化成了“捕捉足”、“开掘足”

D.蝗虫、龙虱的后足分别演化成了“跳跃足”、“游泳足”

答案

参考答案:A

阅读理解

阅读理解。

                                                        Families and cars

     Americans with small families own a small car or a large one. If both parents are working, they

usually have two cars. When the family is large, one of the cars is sold and they will buy a van (大蓬

货车).

     A small car can hold four persons and a large car can hold six persons but it is very crowded. A

van can hold seven persons easily, so a family with three children could ask their grandparents to go

on a holiday travel. They could all travel together.

     Mr. Hagen and his wife had a third child last year. This made them sell a second car and buy a van.

Its sixth and seventh seats are used to put other things, for a family of five must carry many things when

they travel. When they arrive at their grandparents' home, the things are brought into the two seats, and

then it can carry the grandparents.

     Americans call vans motor homes. A motor home is always used for holidays. When a family are

traveling to the mountains or to the seaside, they can live in their motor home for a few days or weeks.

All the members of a big family can enjoy a happier life when they are traveling together. That is why

motor homes have become very popular. In America there are many parks for motor homes.

根据短文内答问题。

1. How many people can a van generally hold?

    ________________________________________________

2. What did Mr. Hagen and his wife do after they had a third child?

    ________________________________________________

3. What do Americans call vans?

    ________________________________________________

4. What do Americans usually use motor homes for?

    ________________________________________________

5. There aren't many parks for motor homes, are there?

    ________________________________________________

填空题