问题 选择题

下列说法正确的是     (    )

A.红宝石、珍珠、玛瑙、水晶、钻石等装饰品的主要成分都是硅酸盐

B.石油裂解、煤的气化、海水制镁、纤维素制火棉等过程中都包含化学变化

C.氢氧燃料电池、丹尼尔电池、硅太阳能电池中都利用了原电池原理

D.纤维素、PLA、纤维二糖、甲壳素、硝化纤维等都是高分子化合物

答案

答案:B

阅读理解

阅读理解。    

     Most American students have to say goodbye to fancy (高档的) fruits these days, In school restaurants across the country, cheaper fruits like apples and oranges have taken their place.

     "People are afraid to spend now," said Linda Morrow, who owns a shoe and handbag store. "They

don't know what the future will bring. "  During the financial crisis  (金融危机), several of the country's

biggest banks have been forced to sell or close. This has made lots of Americans afraid to buy expensive

things.

     The crisis began last year. Experts (专家) think it was because US banks lend money too easily.

Last year a lot of people and companies, who borrowed money, found themselves unable to pay it back.

This left the banks, as well as the people who put their money in the banks, without money. Since the

banks borrowed money between themselves and even across borders (国界) , the whole world was in

trouble.

     This month the US government agreed on a $700 bullions plan to try to save the financial market.

But no one is sure whether it will help or not. Last week presidents from 20countries promised to work

together to find a way out of the money trouble.

1. This passage is probably taken from_______.

A. a story book            

B. a novel

C. a newspaper              

D. an advertisement

2. Why are people in the US afraid to spend money?

A. Because they think it's unnecessary.

B. Because they don't have the habit of spending money.

C. Because they worry about their future.

D. Because they don't have any money.

3. From the passage, we still don't know_______.

A. when the financial crisis began

B. when the financial crisis will end

C. when some of the US banks closed

D. whether the crisis has spread to other countries.

4. The underlined word "presidents" here means     ____ in Chinese.

A. 主任                  

B. 农民

C. 总统                  

D. 警察

5. The best title for the passage is___.

A. Ways to Save Money.

B. Financial Crisis Facing the World

C. Banks in the USA

D. The USA Becoming Poor

单项选择题