题目内容

【题目】

1Alex is crazy about computer.He wants to be a computer ________(工程师)in the future.

2Being tall gives him an _________(优势)over the other basketball players.

3The young detective decided to _________(find out)the truch alone.

4My father is not in.He has gone _________(away from one’s own country)on business.

5________ People can’t hear,so they always use their hands to communicate.

【答案】

1engineer

2advantage

3discover

4abroad

5deaf

【解析】

1考查名词。句意:Alex痴迷于电脑。他将来想成为一名计算机工程师。名词engineer(工程师)作表语,故填engineer.

2考查名词。句意:个子高使他比其他篮球球员有优势。名词advantage(优势)作宾语,故填advantage.

3考查动词。句意:这个年轻的侦探决定独自查明真相。动词discover= find out(发现、查明),故填discover.

4考查副词。句意:我的父亲不在家。他出国去做生意了。副词abroad= away from one’s own country(在国外)作状语,故填abroad.

5考查形容词。句意:聋子不能听见,所以他们总是使用他们的手语去交流。形容词deaf(聋的)作定语,修饰名词people,故填deaf.

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【题目】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 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.

1Which of the following is true of Jae Kwon?

A. He teaches chemistry at MU.

B. He is working on a nuclear energy source.

C. He developed a chemical battery.

D. He made a breakthrough in computer engineering.

2Jae Kwon gave examples in Paragraph 4_________.

A. to introduce nuclear batteries can be safely used

B. to show chemical batteries are widely applied

C. to introduce various energy sources

D. to describe a nuclear-powered system

3Liquid semiconductor is used to _________.

A. get rid of the radioactive waste

B. test the power of nuclear batteries.

C. reduce the damage to lattice structure.

D. decrease the size of nuclear batteries

【题目】When I walked into the house after school, I found my dad at home.

"What are you doing home already?" I asked casually.

"Andrew, I was laid off today," he answered quietly.

I was sure he was joking. "No, you weren't. Why are you really home?"

Then I noticed his expression and realized he was telling the truth. My father has always been a hard worker and prided himself on his career. My father's unemployment created many changes in our lives. He was home all day, which meant my bed had to be made, my room cleaned up, and my homework done right after school. I would come home every day to find him at the computer searching for jobs. I began to notice how down he seemed, and how losing his job had affected his self-esteem, though he tried to be optimistic. He asked my brother and me to spend less money. I gave up my allowance, which even though it wasn't much, felt like the right thing to do. I also found a part-time job.

After several difficult months of searching, my dad decided to go in a totally different direction. He explained that he never wanted to be laid off again, so he was going to start his own business. Day by day, I watched him build it, and I admired how much time and energy he devoted to it.

One evening I asked if he needed help. "Only if it doesn't interfere(打扰,妨碍) with school," he said, which sounded like a yes.

I showed up at his office the next afternoon, and most afternoons after that for two months. I always knew he was a hard worker, but watching him in action really influenced me. Although this was one of the worst experiences for our family, it taught me a lot about dealing with adversity. Now I know that through creative problem-solving, I can always find Plans, ask for help, and take risks.

1When the father was laid off, he ________.

A. was angry with his boss

B. didn't care about it at all

C. couldn't accept the fact easily

D. was as happy as usual

2We can know from the passage that ________.

A. it was not easy for the father to find a new job

B. the father asked his sons to give up their allowance

C. the father found a good job when he changed his direction

D. Andrew and his brother helped his father set up his business

3The underlined word "adversity" in the last paragraph probably means .

A. poor feelings

B. bad situations

C. low spirits

D. old ideas

4What has Andrew learned from his father?

A. The spirit of creative problem-solving.

B. The skills of surfing the Internet.

C. The experience of saving money.

D. The rich business skills.

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