问题 填空题
皮球掉进一个盛有水的圆柱形桶中,皮球的直径为24厘米,水桶底面直径为60厘米,皮球有
2
3
的体积浸在水里,那么皮球掉进水中后,水桶的水面升高______厘米.
答案

24÷2=12(厘米),

V=

4
3
πr3,

4
3
×3.14×123

=

4
3
×3.14×1728,

=7234.56(立方厘米);

7234.56×

2
3
=4823.04(立方厘米);

60÷2=30(厘米);

3.14×302

=3.14×900,

=2826(平方厘米);

4823.04÷2826≈1.7(厘米);

答:水桶中的水面升高了1.7厘米.

故答案为:1.7.

改错题

第Ⅱ卷(共35 分)

第四部分:写作(共两节,满分35分)

第一节:短文改错(共10小题;每小题1分,满分10分)

此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边的横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

该行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。

该行缺一个词:在缺此处加一个漏字符号(∧),在该行右边的横线上写出该加的词。

注意:原行没错的不要改。

It’s kind of you to e-mail me telling me something about your beautiful        76.__________

city. Now I’ll let you know something about mine. The city standing on       77.__________

a river. The climate here is pleased and more people have come to       78.__________

settle here. In the past 10 years the city has been developing rapidly.           79.__________

New factories, buildings and roads have been built. And we still        80.__________

have some problems to dealing with, such as water and air pollution and       81.__________

heavily traffic in rush hours. So in my opinion, the city should develop  82.__________

its economics scientifically. I would also think that we should try our          83.__________

best to control the growth of the city’s population.

I’m very glad to know that you’ll come and pay a visit for my         84.__________

city. I’m sure I can be your guide and make your visit great success.           85.__________

选择题