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问题 填空题

把一个边长是9分米的正方形剪成一个最大的圆，这个圆的面积是______平方厘米，剩下的边料是______平方厘米．

答案

3.14×（9÷2）2，

=3.14×4.52，

=3.14×20.25，

=63.585（平方分米）；

63.585平方分米=6358.5平方厘米．

9×9-63.585，

=81-63.585，

=17.415（平方分米）；

17.415平方分米=1741.5平方厘米．

答：这个圆的面积是6358.5平方厘米，剩下的面积是1741.5平方厘米．

故答案为：6358.5，1741.5．

单项选择题

Passage 1: The Blacks had never been rich enough to spend their summer holidays in a luxurious place. This year, however, Mr. Black made a lot of money and his wife said that she would like to go to Rome for a change. Mr. Black thought it’s a good idea. He said they should stay at a really good hotel while they went around the famous city.They flew to Rome, and arrived at their hotel late one evening. They thought that they would have to go to bed hungrily because no meals were served in cheap hotels where they used to stay. They were therefore surprised when the waiter asked whether they would be having dinner there at night.“Are you still serving dinner now” asked Mrs. Black. “Certainly, madam.” answered the waiter. “We serve it until half past nine.”“What are the time for meals then” asked Mrs. Black.“We serve breakfast from seven to half past eleven in the morning, lunch from twelve to three, tea from four to five and dinner from six to half past nine.”“But that hardly leaves any time for us to see the sights of Rome!” said Mrs. Black in a disappointed voice.

On the first evening in Rome they thought ________.

A．they would go to bed without having dinner

B．meals were served at that time in the hotel

C．they wouldn’t take dinner until half past nine

D．dinner was not necessary
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多项选择题

某患者，女，63岁，突发心悸1小时，心电图：各导联无P波，代之以细小f波，心室率120次/分，听诊可有（）

A．第1心音强弱不等

B．第2心音反常分裂

C．心律绝对不齐

D．有大炮音

E．脉搏短绌
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