Last year the number of studects who graduated with a driving licence reached 200,000, a(n) ________of 40,000 per year.
|
A．average |
B．number |
C．amount |
D．quantity |
After the earthquake, the first thing the local government did was to provide for the homeless families.
|
A．accommodation |
B．occupation |
C．equipment |
D．furniture. |
This restaurant has become popular for its wide of foods that suit all tastes and pockets.
|
A．division |
B．area |
C．range |
D．circle |
第二节 写作（满分30分）
假设你是新华中学的学生李华，你和在上海上学的英国朋友Tom约好下周末去北京旅游，但你因故不能赴约。请根据以下要点用英语给他写一封电子邮件：
1. 表示歉意；
2. 解释原因；
3. 另约时间。
注意：1. 词数120~150；
2. 可适当增加细节。
第II卷 （共45分）
第四部分 书面表达
第一节 阅读表达（共5小题；每小题3分，满分15分）
阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上（请注意问题后的字数要求）。
80. Translate the underlined sentence in Paragraph 3 into Chinese.
_________________________________________________________________
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”，said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
1. Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2. Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3. Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure.
4. According to Jae Kwon, his nuclear battery _______.
A. uses a solid semiconductor
B. will soon replace the present ones.
C. could be extremely thin
D. has passed the final test.
5. The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
