古代埃及是人类早期文明的发源地之一，其重要的文明遗存是（） A.空中花园 B.金字塔

某物体的运动情况经仪器监控扫描，输入计算机后得到该运动物体位移方程为x=6t-t²（m）．则该物体在时间t从0-4s内经过的路程为（　　）

A．8m

B．9m

C．10m

D．11m

载波相位测量测定的是载波从卫星到接收机的（）。

阅读理解

     Far more people in India have access to a mobile phone than to a toilet, according to a UN study.

     India's mobile users totaled 563.73 million at the last count, enough to serve nearly half of the

country's population.

    But just 366 million people-around a third of the population-had access to proper sanitation (卫

生设施) in 2008, said the study published by the UN University, a UN thinktank.

     "It is a tragic irony (讽刺) to think in India, a country now wealthy enough that roughly half of the

people own phones, so many people cannot afford the basic necessity and quality of a toilet, " said

UN University director Zafar Adeel.

     Adeel heads the UN University's Institute for Water, Environment and Health, based in the

Canadian city of Hamilton, which prepared the report.

      Worldwide, an estimated 358 billion dollars is needed between now and 2015 to achieve the UN

Millennium Development Goal (MDG) of halving the proportion of people with inadequate (不充分的)

sanitation from 2000 levels.

     "Proper sanitation could do more to save lives, especially those of young people, improve health

and help pull India and other countries in similar circumstances out of poverty than any alternative

investment, " Adeel said.

     Poor sanitation is a major contributor to waterborne diseases (水传播疾病), which in the past three

years alone killed an estimated 4.5 million children under the age of five worldwide, according to the

study.

    The report gave a rough cost of 300 dollars to build a toilet, including labour, and materials.The

world could expect a return of up to 34 dollars for every dollar spent on sanitation through improved

productivity and reduced poverty and health costs, said Adeel.He said improving sanitation was an

economic and humanitarian opportunity of historic proportions.

1. The population of India is about________.

A. less than 1 billion 

B. about 1.2 billion

C. 900 million  

D. 800 million

2. From Paragraph 4, we can draw a conclusion that________.

A. India is so poor that they can't afford the basic necessity and quality of a toilet

B. a mobile phone is more important than a toilet

C. it's normal in Indian that they can't attach importance to toilets

D. Zafar Adeel wasn't satisfied with the sanitary situation in India

3. Improving sanitation can play an important part in the following EXCEPT________.

A. preventing waterborne diseases

B. saving lives of young people

C. pulling developing countries out of poverty

D. improving the quality of mobile phone and getting more information

4. According to the last paragraph, if the government put into $10,000 on sanitation, they

   can get a return of________.

A. $3,000,000  

B. $10,000

C. $340,000  

D. $10,200

社会主义市场经济体制的基础是( )。

A．以间接手段为主的完善的宏观调控体系
B．统一、开放、竞争、有序的市场体系
C．以公有制为基础的现代企业制度
D．合理的收入分配和社会保障制度

简述全草类中药的概念及鉴别要点。