确定估价对象及其范围和内容时，应根据( )，依据法律法规，并征求委托人同意后综合确

_____ old man is _____ teacher. He likes playing _____ basketball after supper.  [ ]

A. An; a; /   

B. The; a; /   

C. An; the; the  

D. The; a; the 

除哪一项外，均为低渗性脱水的特点

A．主要是细胞外液减少重点为低钠血症
B．多见于营养不良伴腹泻的病儿
C．易高热，烦渴
D．易脱水，休克
E．易嗜睡，昏迷

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

工程项目管理的______职能，是管理人员按照计划指标来衡量实际执行中所取得的进展和成果，通过发布指令进行决策、指挥、调遣、督导和检查评价等，纠正所发生的偏差，使项目预定目标得以实现。

A．组织
B．计划
C．协调
D．控制

如何加速真空脱气反应速度？