America’s greatest technological achievement, the Hoover Dam, now has a companion piece, a bridge held up by the longest arch in the Western Hemisphere（半球）. The Mike O’Callaghan-Pat Tillman Memorial Bridge, which opened this month and connects the U.S. states of Arizona and Nevada, crosses the vast chasm（峡谷）890 feet above the Colorado River that is controlled by the dam.

The striking 1,900-foot-long structure will improve traffic in the region and help protect the dam from being destroyed. It is the seventh highest bridge in the world, behind four in China, one in Papua New Guinea and one in the US state of Colorado.

“The Hoover Dam is the greatest civil engineering achievement in America’s history,” said the bridge project manager Dave Zanatell. “Our goal was not to outdo or outshine it. Our goal was to, in a respectful way, do something that would be great for our generation and that would stand besides Hoover Dam in a respectful and quality way that would become a part of Hoover’s legacy（遗产）.”

Just as the Hoover Dam was built in the heart of the Great Depression（大萧条）and was seen as an example of the nation’s can-do spirit, some hope this project can also provide some uplift.

The bridge is surprising: at 1,050 feet, its support arch holds up a roadway that lies on 300-foot-long concrete pillars（柱子）, some of the tallest in the world. It contains 16 million pounds of steel.

　　The idea of the bridge came into being in the 1960s because the top of the Hoover Dam has been a narrow two-lane road that is the fastest route from Arizona to Las Vegas and then the Pacific Northwest and Canada.

  　Access to the dam from each direction is a dangerously winding route, but massive trucks and passenger vehicles shared it for decades. During the day, when thousands of tourists travel to the dam from Las Vegas three times as many accidents as on a normal road will happen.

  　The bridge has a sidewalk on the side facing the dam. The wall on both sides is 54 inches high, so walkers can take photos there.

1.Which of the following is true of the Hoover Dam?

   A. It was completed recently.

   B. It was built during the hard times.

   C. It has the longest arch.

   D. It’s the seventh highest dam in the world.

2.What is one of the purposes of building the bridge?

   A. To protect the dam.                                            B. To save the cultures.

   C. To outdo the dam.                                                   D. To develop the tourism.

3.The underlined word “uplift” in Paragraph 4 means _____.

   A. lift of the heavy object                              B. support in money

   C. spiritual encouragement                                   D. instruction in technology

4.Which of the followings shows the right position of the bridge and dam?

5.The text is mainly about ______.

   A. the Hoover Dam                                                 

   B. American western development

   C. a tour along the Colorado River                      

   D. a recently built bridge

完型填空

　　Have you ever imagined that you could be cloned like Dolly the sheep in the not too distant future?

　　The news that a human embryo (胚胎) has been 1 cloned for the first time has caused mixed reactions (反映).

　　The 2 was carried out by scientists from the Advanced Cell Technology Inc (ACT), in Massachusetts, US. The group 3 the news on November 25.

　　“This is 4 human being. A clone is alive, it walks, it breathes,” said Jamie Grifo, 5 on the study of cloning at New York University School of Medicine.

　　“This is a set of cells in a lab that will be used to 6 someone's life. ”

　　Such research could lead to treatment for 7 such as heart diseases, AIDS and even cancer, 8 scientists.

　　Despite high hopes from other scientists, the news raised concerns immediately from religious and political leaders. Several 9 in the US do not allow human cloning. President George W. Bush also made it clear that he is 10  any type of human cloning. However, the scientists at ACT said they have no interest at present in 11 an early embryo into __12__.

　　Animals have been cloned repeatedly since Dolly the sheep 13 in 1997. And there were no real technical 14 to stand in the way of scientists making a cloned human embryo.

　　This time the research group used traditional cloning technology with a human 15

　　 16 it was given DNA from an adult cell, the egg began to __17__.__18__ it was stopped from becoming a baby--at a stage in which it was 19 a ball of cells. The 20 technology has been used to clone sheep, cattle and monkeys.

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A. according to

B. including

C. besides

D. argued

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A. developing

B. building

C. inventing

D. discovering

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It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia (学术界) outweigh any financial considerations.
　　Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia mid-career was to take advantage of the greater freedom to choose research questions. Some areas of inquiry have few prospects of a commercial return, and Lee’s is one of them.
　　The impact of a salary cut is probably less severe for a scientist in the early stages of a career. Guy Grant, now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge, spent two years working for a pharmaceutical (制药的) company before returning to university as a post-doctoral researcher. He took a 30% salary cut but felt it worthwhile for the greater intellectual（知识的） opportunities.
　　Higher up the ladder, where a pay cut is usually more significant, the demand for scientists with a wealth of experience in industry is forcing universities to make the transition (转换) to academia more attractive, according to Lee. Industrial scientists tend to receive training that academics do not, such as how to build a multidisciplinary team, manage budgets and negotiate contracts. They are also well placed to bring something extra to the teaching side of an academic role that will help students get a job when they graduate, says Lee, perhaps experience in manufacturing practice or product development. “Only a small number of undergraduates will continue in an academic career. So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the job market than someone who has spent all their time on a narrow research project.”
【小题1】By “a one-way street” (Line 1, Para. 1), the author means ________.

TOKYO — Our kids, the Japanese government announced, have forgotten how to behave. They can’t be bothered with housework. If they see someone being wronged, they probably look the other way.

Few countries have placed more importance on being well-behaved in public than Japan. The simplest requests for directions often result in guided tours. Smiling shopkeepers are still the rule. Lost wallets usually make their way to their owners.

But according to recent surveys(调查), all that may be going the way of the ancient hair-do(发式). And Japan’s government has gone into something of a crisis mode(危机时刻).

A Japanese Education Ministry Survey formed late in 1999 and made public last month found that Japan moves behind other nations in teaching youngsters right from wrong.

It also reported that Japanese children are less helpful and do far less housework than their foreign peers(同龄人) in all classes. But they are better about taking dirty dishes to the kitchens after dinner.

In addition, Japanese kids are more likely to dry their hair and carry cell phones than American and Chinese kids, according to another survey, by a Tokyo-based tank(专家小组).

Children in about 8 per cent of public school classrooms are so disorderly that teachers cannot hold lessons, further recent reports show. children refuse to sit, to listen or to stop talking.

Older and middle-aged Japanese continue to have a solid sense of good manners and social justice(正义, 公正), says Professor Yoshina Hirano from Shinshu University, who was appointed to direct the ministry’s survey.

Despite the knowledge of good manners among adults, the breakdown in manners may be spreading, he said.

1. From the first paragraph, we can infer that _______.

A. the Japanese government had gone bad

B. kids in Japan have a bad memory

C. kids in Japan seldom help their parents with housework

D. kids in Japan are too busy to help others

2. The second paragraph seems to show us that _______.

A. the education system of Japan is better than that of any other country

B. shopkeepers in Japan are too kind to their customers

C. Japanese kids often find wallets on their way to their schools

D. Japanese adults in public places act politely to each other

3. It is implied(暗含) in this passage that Japanese kids _______.

A. spending much time doing their homework　　　　

B. lead an advanced modern life

C. have their hair cut too often　　　　　　　　　　

D. often wash dishes after dinner