中外合作开采石油、天然气的企业是资源税的纳税义务人。()

Li  Ming ____ in China.          [ ]

A. live          

B. lives      

C. lives in

An eighteen-year-old high school student from Utah won the top prize in the Intel Science Talent Search in the United States. The winner received a computer and a scholarship for a college education.

More than 1,500students from across the country entered projects in the competition this year. Their research included chemistry, medicine, physics, mathematics, engineering, and computer science-almost every area of science.

Forty students were invited to Washington, D.C. for the final judging. A group of scientists judged them on their research abilities, critical thinking skills and creativity. The judges also questioned the students about scientific problems before deciding on the winners.

The top winner received 100,000 dollars for college. Shannon Babb of American Fork High School studied the water quality of tile Spanish Fork River in Utah for six years. She found that people have a harmful effect on the river through human activity, including agriculture. And she suggested ways to improve the water quality in the future. These include educating the public not to put household chemicals down the drains（下水道）, which lead to the river eventually.

Seventeen-year-old Yi Sun of the Hanker School in San Jose, California, earned the second place. He won a 75,000-dollar scholarship for new discoveries about a mathematical theory known as random walks. His work could help computer scientists and chemists. Yi Sun was born in China.

The third-place winner was also seventeen and born in China. Yuan “Chelsea” Zhang of Montgomery Blair High School in Rockville, Maryland, won a 50,000-dollar scholarship. She researched the molecular genetics（分子遗传学）of heart disease. Her findings could aid the development of new medicines.

The Intel Science Talent Search is the oldest science competition for high school students in the United States. It is 65 years old this year. Past winners have gone on to receive six Nobel prizes and other top honors in science and math.

小题1:What do we know about the talent search project?  

A．Most of its winners have received Nobel prizes.

B．The project includes researches in every area of science.

C．Only a small part of the students can attend the final judging.

D．Most of the winners come from Asian countries.小题2:According to the text,         .   

A．water quality in Utah will be better than that in the other states

B．the river was polluted only by those living near it

C．Shannon Babb suggested more than one way to improve the water quality

D．household chemicals should be kept in the drains forever小题3:Which of the following about the girl from Maryland is NOT true? 

A．The scholarship she received was half as many as Shannon Babb.

B．Her discovery is of great help to Chinese medicine.

C．Her research will contribute to the cure of heart disease.

D．She and the second-place winner Yi Sun have something in common.小题4:What is the text mainly about?  

A．Three winners' contributions to science and math.

B．Three Chinese students won the Science Talent Search.

C．Great rewards were given to winners in the competition.

D．Winners of the Intel Science Talent Search in the US.小题5:Where are you most likely to find this text?  

A．In a newspaper.

B．In a handbook.

C．In a textbook.

D．In a medical magazine.

（6分）在一个密闭容器中，保持一定的温度和压强进行以下反应:

A(g) +3B(g) 3C(g)，已知加入1 molA和3 molB,平衡时A的物质的量为a mol。

(1)达到平衡时C在反应混合体中体积百分含量是            （用含a的关系式表示）

(2)在相同的实验条件下，若在同一个容器中改为加入2 molA和6 molB，达到平衡后， C在混合气体中的体积百分含量          （填“增大”“减小”或“不变”）。

(3)在相同的实验条件下，如果加入n mol A、m mol B和p molC，若要求平衡后C在混合气体中的百分含量保持不变，与(1)相同,则n、m与p的关系式为                 。

进行安装工程施工时，需要进行成品保护的主要项目有（）。

A.机电重要设备（如发电机组、高低压开关柜、变压器等）

B.所有面层装臵（如开关、插座等）

C.主要材料（如灯具等）

D.施工机具（如起重机.电焊机等）

下列不属于诱发交通事故的因素是（）。

A、疲劳驾驶

B、车辆超载

C、按章驾驶

D、超速行驶