在1：500000的地图上实地距离为40千米的两城市在图上距离是：（） A．4厘

欧债美债危机引起股市动荡，投资股市，需要仔细权衡股票的  [ ]

A．红利收入；股本返还方式

B．预期股息；本金偿还期限

C．保障范围；赔付标准

D．股票价格；银行利率

以下所列各项活动中，属于实践活动的是（  ）

①工人做工    ②农民种地     ③蜘蛛织网    ④蜜蜂采蜜

A．①②

B．③④

C．①③

D．③④

证券监督管理机关在履行职责时，如果没有法律依据或法律规定不明，应当依据（）原则解释法律和处理问题。

A．公开

B．诚实信用

C．公正

D．公平

阅读理解。

     A mouse looked through a hole in the wall to see the farmer and his wife opening a package; what food

could it contain? He was astonished to discover that it was a mouse trap!

     Running to the farmyard, the mouse shouted, warning everyone, "There is a mouse trap in the house,

there is a mouse trap in the house." The chicken, with her head high, glared at the mouse and said, "Shut up.

Little Ugly. This is a great concern to you, but it has nothing to do with me:I can't be troubled by it."

     The mouse turned to the pig and told him."There is a mouse trap in the house." "I am so sorry, Mr

Mouse," said the pig sympathetically, "but there is nothing I can do about it but pray；you are always in my

prayers."

     The mouse turned to the cow, who said,"A mouse trap, am I in great danger, huh?"

     Now the mouse had to face the farmer's mouse trap alone.

     That very night a sound was heard through the house, like that of a mouse trap catching its prey. The

farmer' wife rushed to see what was caught. In the darkness, she did not see it was a big poisonous snake

whose tail the trap had caught. The snake bit the farmer's wife. The farmer rushed her to the hospital. She

rerturned home with a fever. It is said that drinking fresh chicken soup will help treat fever, so the farmer took

his sharp knife to the farmyard for the soup's main ingredient. His wife's sickness continued, so friends and

neighbors came to sit with her around the clock. To feed them, the farmer killed the pig. The farmer's wife did

not get well, in fact, she died, and so many people came for her funeral. The farmer had the cow killed to

provide for all of them to eat.

     So next time when someone is facing a problem, don't say that it has nothing to do with you.

1. We could see from the passage that the mouse was _____.

A. good at cheating others

B. dishonest

C. kind and warm-hearted

D. foolish

2. Which of the following is NOT TRUE according to the passage?

A. The others help the farmer kill the cow.

B. The mouse trap was very practical.

C. The pig is more friendly than the other animals.

D. The farmer's family had no friends at all.

3. The passage is most probably a _____.

A. fable (寓言)

B. science fiction

C. fairy tale (神话)

D. humorous story

4. What can we learn from the story?

A. Traps can always cause chain reactions.

B. It is better to be safe than to be sorry.

C. Sometimes when the least of us is threatened, we all might be at risk.

D. To keep the balance of nature is the duty of us al.

在做“用油膜法估测分子的大小”实验中，油酸酒精溶液的浓度为每10⁴mL溶液中有纯油酸6mL．用注射器得1mL上述溶液中有液滴50滴．把1滴该溶液滴入盛水的浅盘里，待水面稳定后，将玻璃板放在浅盘上，在玻璃板上描出油膜的轮廓，随后把玻璃板放在坐标纸上，其形状如图所示，坐标中正方形小方格的边长为20mm．求：

（1）油酸膜的面积是多少？

（2）每一滴油酸酒精溶液中含有纯油酸的体积是多少？

（3）根据上述数据，估测出油酸分子的直径是多少？