问题 单项选择题

关于植被对水分循环的影响的主要表现不包括()。

A、减慢了水分大循环的速度

B、减慢了局部水分循环的速度

C、调节了洪水和枯水的径流量

D、调节了洪峰的径流,提高水的利用率

答案

参考答案:B

阅读理解

For the past year, the World Food Program has operated a project to prevent hunger in twenty-one countries in Africa. In the project, the United Nations agency works with small farmers to grow more and better produce.

The World Food Program buys the produce through local cooperative associations. Then it distributes the products within the country or area. The project works mainly with women. Sheila Sisulu from the World Food Program says the project aims to break a cycle that keeps people hungry. The situation is that farmers have to sell their produce at low prices after harvest, when supplies are greatest. Then they have to pay high prices to buy food for themselves during the "lean season," when supplies are limited.

But when farmers produce more food, they can sell more. And when they produce high-quality food, they can get higher prices. They can also store food for themselves, and have enough money to buy food if they need to during the lean season. Sheila Sisulu says the farmers are now starting to earn profits through the project.

The Food and Agriculture Organization and the International Fund for Agricultural Development help the farmers choose the best seeds and fertilizers. They also advise the farmers on the quality levels that the World Food Program requires to buy their produce.

Two other groups recently launched a separate effort to increase food security in Africa. The groups are the Alliance for a Green Revolution in Africa and the New Partnership for Africa's Development. They say African governments have to increase their investment in agriculture in order to fight problems related to climate change. The groups want the governments to develop programs in seeds, soil health, policy and markets.

Former United Nations chief Kofi Annan is the chairman of AGRA. The group's president, Namanga Ngongi, says many African governments are not meeting a target of spending ten percent of their national budgets on agriculture. But he says investment has risen from four percent of national budgets to probably five and a half percent today.

1. The underlined word “lean” in Paragraph 2 probably has the same meaning with ______.

A. He is a tall, lean and handsome boy, liked by many girls.

B. The changes made the company leaner and more competitive.

C. The company recovered well after going through several lean years.

D. The doctor told him that lean meat was healthier for his mother than fatty meat.

2. According to Sheila Sisulu, the project _____.

A. distributes the products within the whole world

B. has benefited few African farmers during the past year

C. enables the African farmers to sell their produce at low prices after harvest

D. can help the farmers to get away from the situation that keeps them hungry

3. The problem of hunger in Africa can possibly be relieved by ______.

A. United Nations chief

B. the World Food Program

C. African governments and farmers

D. the Food and Agriculture Organization

4. Which can be the best title?

A. Hunger, the most serious problem in Africa      

B. Two efforts seek to increase food security in Africa

C. A project to grow more and better produce in Africa

D. More investments in agriculture by African governments

单项选择题