The author writes this passage in order to_____.A.informB.instructC.predictD.persuade

In the passage, it is implied but NOT stated that_____.

A.disposing the plastics is one of NEC Corp’s businesses

B.magnesium is an ideal material for the case of TV

C.21-inch TV with magnesium case isn’t very popular so far

D.magnesium must be better than the plastics

According to the passage, the term “plastic sandwich” refers to_____.

A.a kind of sandwich-shaped toy made of plastics

B.a kind of plastics with different integration in each layer

C.a kind of plastics with maximum strength and flexibility

D.a kind of plastics made of 100% recycled materials

Which of the following is NOT the character of plastics?

A.Most electronic products contain plastics.

B.It retains its original strength through reprocessing.

C.Recycled plastics can be integrated into new products.

D.Plastics will lose flexibility after a certain period of time.

tly, the country requires that all electronic goods—TVs, VCRs, stereos, and more—be recycled But recycling will not beleft to consumers, instead, the devices will be sent to the original manufacturer for proper disposal.

The new law poses a few challenges to manufacturers who are now rushing to set up collection networks and perfecting techniques to disassemble and recycle older products.With an eye toward the future, they are also integrating easily recycled materials into new products. Plastics, a major component of most electronicproducts,pose a particular obstacle because their quality becomes worse and worse with age,losing strengthand flexibility even if reprocessed.NEC Corp. overcomes this problem by creating a plastics sandwich, in which the filling is 100 percent recycled plastic and the outer layers a mixture of 14 percent recycled material.The resulting plastic has sufficient strength and toughness for use as a case for desktop PCs. The company, in cooperation with plastic maker Sumitomo Dow, has also developed a new plastic, which engineers claim retains its mechanical properties through repeated recycling. NEC uses the plastic, which is also flame-retardant (阻燃的) in battery cases for notebook PCs.

Meanwhile, Matsushita Electric, maker of the Panasonic brand, is avoiding plastic in favor of magnesium (镁). Magnesium, says the company, is ideal for re cycling because it retains its original strength throughrepeated reprocessing. Matsushita has developed molding techniques to form. magnesium into the case for a 21-inch TV. Unfortunately, the magnesium case and energy-saving features make the TV about twice as expensive as an ordinary model.The company hopes, however, that increased use of magnesium will eventually bring prices down.

Choose correct answers to the question:

According to the present regulations of Japan, the recycling of paper and plastic will be the responsibility of______.

A.the government

B.the manufacturers

C.the consumers

D.the sellers

Phones. You should write at least 150 words and based on the following gragh and the outline given below in Chinese:

1.描述所示的手机用户变化情况(据统计，2007年上半年手机用户量超过5亿)

2. 出现这种情况的原因

3. 对此现象做出评价

side air, they pose many potential health hazards. Much research has looked at how the movement of air inside a closed environment---such as an office building---can spread disease or expose people in the building to harmful chemicals.

One of the more widely publicized dangers is that of Legionnaire’s disease, which was first recognized inthe 1970s. This was found to have affected people in buildings with air-conditioning systems in which warmair pumped out of the system’ cooling towers was somehow sucked back into the air intake (通风口),in mostcases due to poor design. The warm air, filled with bacteria,was combined with cooled, conditioned air andwas then circulated around various parts of the building. Studies showed that even people outside such buildings were at risk if they walked past air exhaust pipes.

Large air-conditioning systems add water to the air they circulate by means of humidifiers (湿度调节器).Inolder systems, the water used for this process is kept in special reservoirs, the bottoms of which providebreeding grounds for bacteria which can find their way into the ventilation (通风)system. The risk to human health from this situation has been highlighted by the fact that the immune systems (免疫系统)of approximately half of workers in air-conditioned office buildings have developed the ability to fight off the organisms found at the bottom of system reservoirs. But chemicals called “biocides”are added to reservoirs to make them germ-free, and they are dangerous in their own right in sufficient quantities, as they often contain compounds strongly linked to cancers.

Finally, it should be pointed out that the artificial climatic environment created by air-conditioners canalso affect us. In a natural environment, whether indoor or outdoor, there are small variations in temperature and humidity. Indeed, the human body has long been accustomed to these normal changes. In an air-conditioned living or working environment, however, body temperatures remain well under37℃, our normal temperature. This leads to a weakened immune system and thus greater exposure to diseases such as colds and flu.

Choose correct answers to the question:

What do we know about Legionnaire’s disease from the passage?

A.It was the most widely concerned office hazard.

B.It can affect people both inside and outside the building.

C.It happens only in air-conditioned office buildings.

D.It does not develop in well-designed buildings.

In the old air-conditioned systems, bacteria first develop______.A.in the reservoirs

B.in the ventilation system

C.in the humidifiers

D.in the air intake

The fact that about half of workers developed the ability to fight off the bacteria may__.A.relieve people’s worry about the danger caused by the bacteria

B.help people find an effective way to get rid of the bacteria

C.reflect the serious danger brought by the bacteria

D.cause serious disease such as cancers to people

The author most probably wants the readers to treat biocides with an attitude of_.A.caution

B.trust

C.enthusiasm

D.criticism

The last paragraph implies that our immune system can be weakened when _A.we live in an artificial climatic environment

B.there are variations in temperature and humidity

C.our body temperatures often remain not high enough

D.we are often exposed to diseases such as colds and flu

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ecome smaller, safer,and more economical, and should not be powered by the gasoline engine. The car of the future should be far more pollution-free than present types.

Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion (拥挤). One proposed solution to this problem is the automated highway system.

When the auto enters the highway system, a retractable (可伸缩的) arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail,the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car&39;s movements.

The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wait for the buzzer (蜂鸣器) that will warn him of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,500 to 2,000 vehicles that can be carried by a present-day highway.

Choose correct answers to the question:

One significant improvement in the future car will probably be ________.

A.its power source

B.its driving system

C.its monitoring system

D.its seating capacity

What is the author’s main concern?A.How to render automobiles pollution-free.

B.How to make smaller and safer automobiles.

C.How to solve the problem of traffic jams.

D.How to develop an automated subway system.

What provides autos with electric power in an automated highway system?A.A rail.

B.An engine.

C.A retractable arm.

D.A computer controller.

In an automated highway system, all the driver needs to do is ________.A.keep in the right lane

B.wait to arrive at his destination

C.keep in constant touch with the computer center

D.inform the system of his destination by phone

What is the author’s attitude toward the future of autos?A.Enthusiastic.

B.Pessimistic.

C.Optimistic.

D.Cautious.

请帮忙给出每个问题的正确答案和分析，谢谢！

village” where countries are only seconds away by fax or phone or satellite link. And, of course, our ability to benefit from this high-tech communications equipment is greatly enhanced by foreign language skills.

Deeply involved with this new technology is a breed of modern business people who have a growing respect for the economic value of doing business abroaIn modern markets, success overseas often helps support domestic business efforts.

Overseas assignments are becoming increasingly important to advancement within executive ranks. The executive stationed in another country no longer need fear being “out of sight and out of mind.” He or she canbe sure that the overseas effort is central to the company’s plan for success, and that promotions often follow or accompany an assignment abroaIf an employee can succeed in a difficult assignment overseas, superiors will have greater confidence in his or her ability to cope back in the United States where cross-cultural considerations and foreign language issues are becoming more and more prevalent (普遍的).

Thanks to a variety of relatively inexpensive communications devices with business applications, even small businesses in the United States are able to get into international markets.

English is still the international language of business. But there is an ever-growing need for people who can speak another language. A second language isn’t generally required to get a job in business, but having language skills gives a candidate the edge when other qualifications appear to be equal.

The employee posted abroad who speaks the country’s principal language has an opportunity to fast-forwardcertain negotiations, and cam have the cultural insight to know when it is better to move more slowly. Theemployee at the home office who can communicate well with foreign clients over the telephone or by fax machine is an obvious asset to the firm.

Choose correct answers to the question:

What is the author’s attitude toward high-tech communications equipment？

A.Critical

B.Prejudiced

C.Indifferent

D.Positive

With the increased use of high-tech communications equipment, businesspeople ________.A.have to get familiar with modern technology

B.are gaining more economic benefits from domestic operations

C.are attaching more importance to their overseas business

D.are eager to work overseas

In this passage,“out of sight and out of mind” (Lines 2-3, Para 3) probably means ________.A.being unable to think properly for lack of insight

B.being totally out of touch with business at home

C.missing opportunities for promotion when abroad

D.leaving all care and worry behind

According to the passage, what is an important consideration of international corporationsin employingpeople today?A.Connections with businesses overseas.

B.Ability to speak the client’s language.

C.Technical know-how.

D.Business experience.

The advantage of employees having foreign language skills is that they can ________.A.better control the whole negotiation process

B.easily find new approaches to meet market needs

C.fast-forward their proposals to headquarters

D.easily make friends with businesspeople abroad

请帮忙给出每个问题的正确答案和分析，谢谢！

dinary discovery of echolocation (回声定位) in bats to see a case in which the voice plays a strictly practical role.

To get a full appreciation of what this means we must turn first to some recent human inventions. Everyoneknows that if he shouts near a wall or a mountainside, an echo will come back. The further off this solid obstacle, the longer time it will take for the return of the echo. A sound made by tapping on the main body of a ship will be reflected from the sea bottom, and by measuring the time interval between the taps andthe receipt of the echoes the depth of the sea at that point can be calculated.So was born the echo-sounding equipment, now in general use in ships. Every solid object will reflect a sound, varying according to the size and nature of the object. A shoal of fish will do this. So it is a comparatively simple step fromlocating the sea bottom to locating a shoal of fish. With experience, and with improved equipment, it is now possible not only to locate fish but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.

A few years ago it was found that certain bats emit squeaks (吱吱声) and by receiving ’he echoes they could locate and steer clear of obstacles--or locate flying insects on which they feed.This echolocation in bats is often compared with radar, the principle of which is similar.@@@@@@@ Choose correct answers to the question:

The main purpose of this passage is to ______.

A.describe that animals can make different sounds

B.prove that animals’ voices can play practical roles

C.inspire the readers to make more inventions

D.startle the readers with some shocking facts

The discovery of echolocation may help with all of the following EXCEPTA.measuring the depth of the sea

B.distinguishing different kinds of fish

C.improving the functions of radar

D.varying the size and nature of an object

By saying "A shoal of fish will do this"(Lines 6-7, Para 2), the author means ________.A.only one special kind of fish can reflect sounds

B.only one special kind of fish can be used to help locate a ship

C.a large group of fish can reflect sounds

D.a large group of fish can be used to help locate a ship

As it is discussed in the passage, the squeaks of bats can be functionally compared with ________.A.human languages

B.a mountainside

C.a shoal of fish

D.taps on a ship

Which of the following statements can be inferred from the passage?A.Animals are more intelligent than humans.

B.Humans are more intelligent than animals.

C.Animals are often compared with human inventions.

D.Humans are often inspired by animals.

请帮忙给出每个问题的正确答案和分析，谢谢！