Over the centuries, scientists have been trying hard to find satisfactory substitutes for precious stones but failed many times. Many years ago, a chemist surprised the world by saying: It should be possible to make a precious stone that not only looks like the real thing, but that is the real thing.The only difference should be that one crystal would be made by man, the other by nature. At first this did not seem like a particularly hard task. Scientists began to try making synthetic diamonds towards the end of the eighteenth century and discovered a key scientific fact: diamonds are a form of carbon, which is a very common element. Then, why not change a cheap and plentiful substance, carbon, into a rare and expensive one, diamond?This change takes place in nature, so it should be possible to make it happen in the laboratory. It should be possible, but for 150 years every effort failed though several people believed that they had solved the diamond riddle during this period. The real success came after the scientists realized that, in changing carbon into diamonds, unbelievably heavy pressure and extremely high temperature are indispensable, and carbon needs to be dissolved(溶解) in a metal that helps the reaction to take place more easily. Under these conditions, a number of shiny crystals were produced in the laboratories of the General Electric Company.The results of careful analysis showed that the chemist was right: these jewels of the laboratory were not like diamonds; they were diamonds.

She arranged a party to help put the strangers at their _____. comfort pleasure peace ease

The managing director took the _____ for the accident, although it was not really his fault. charge crime blame guilt

The key to our room was _____ to a large plastic plate with the room number on it. attached connected joined related

He made a _____ sum of money in real estate and then invested it in the stock market. conscious considerate considerable conservative

Higher taxes are likely to _____ importing expensive cars into the country. encourage discourage protect persuade

Tiny people might be living inside of your computer—eating, sleeping, and going to school just like you do. But don’t be alarmed.This civilization is not real.The people are characters from the gameThe Sims, the best-selling creation of Will Wright’s. After graduation, Wright got a job working on a typical fighting video game called Raid on Bungeling Bay. In this game, the player drops bombs on a city. Wright found that his favorite part of the design process was creating the landscape(风景), not destroying it. Wright’s dream, like that of many of his friends, was to produce his own video game. He designed Simcity. but for years could not find anyone willing to invest the money needed to put it on the market.Then one day, he met computer-game producer Jeff Braun, who loved the idea of a noncombative(非打斗的)game .Together they formed a small company—and a whole new type of video games called “Simulation (模拟) Reality“ that allow players to build virtual societies. Simcity came out soon, followed byThe Sims eleven years later. “We spend a lot of time doing research before we start making the games—usually about a year or two,“ says Wright. “For my latest game, Spore, I started the research process about six years ago.“ Today, Wright employs a large team of computer programmers, designers, and graphic artists to help him bring his ideas to life. He owes his success to three things: his curiosity, his persistence, and his team.

(Paragraph 2，Passage 3) This oversimplified statement often angers those who believe that all it takes to get ahead is hard-work．这种过于简单的说法常常令那些相信只要做出努力就能成功的人感到气愤。这句话非常简单，但它常常使信奉不顾一切去获取成功信条的人感到生气。这说法非常简单，但完成所有艰苦工作才能得到提拔的规定使人感到气愤。这句话说来简单，却说明了人们为什么讨厌那些不好好工作却能平步青云的人。这句话虽然简明扼要，但常常令那些相信只要做出努力就能成功的人感到气愤。

(Paragraph 3，Passage 4) There would be no financial help unless they could produce a driver’s license or bank statement．所有的经济资助只能发给那些没有驾驶执照或银行证明的人。经济资助无法到位，除非他们能申请到驾驶执照或银行证明。如果经济资助无法到手，他们就必须申请驾驶执照或银行证明。除非他们能出示驾照或银行存单, 否则他们就不会有救济款。如果不能出示驾照或银行存单，他们就领不到救济款b

Don’t try to _____ for Tom’s behavior. He won’t get away with it this time. make a mistake make an excuse make a search make an effort

When he was asked about the missing camera, Jimmy _____ ever seeing it. opposed complained refused denied

It would make great _____ for the parents to be involved in children’s activities. idea sense significance meaning

President Bush, together with his wife and daughter, ______ at the opening ceremony of the 29th Olympic Games in Beijing. are present is present were present was present

It was reported that only one tourist was fortunate to escape _____ in the attack. to be killed having killed killing being killed

_____ there are few jobs available in rural areas, many young people move to the cities in search of employment. Since While After Although

By the time I got to the cinema, all the tickets for “The Merchant of Venice“ _____ out. were sold was sold had been sold have been sold

It is recommended that the project _____ until all the preparations have been made. is not started is not to be started not be started will not be started

_____ is often the case, the calls from our customers are for help with their computer systems. That This What As

There was so much noise that the speaker couldn’t make himself_____. hearing heard being heard to hear

Over the centuries, scientists have been trying hard to find satisfactory substitutes for precious stones but failed many times. Many years ago, a chemist surprised the world by saying: It should be possible to make a precious stone that not only looks like the real thing, but that is the real thing.The only difference should be that one crystal would be made by man, the other by nature. At first this did not seem like a particularly hard task. Scientists began to try making synthetic diamonds towards the end of the eighteenth century and discovered a key scientific fact: diamonds are a form of carbon, which is a very common element. Then, why not change a cheap and plentiful substance, carbon, into a rare and expensive one, diamond?This change takes place in nature, so it should be possible to make it happen in the laboratory. It should be possible, but for 150 years every effort failed though several people believed that they had solved the diamond riddle during this period. The real success came after the scientists realized that, in changing carbon into diamonds, unbelievably heavy pressure and extremely high temperature are indispensable, and carbon needs to be dissolved(溶解) in a metal that helps the reaction to take place more easily. Under these conditions, a number of shiny crystals were produced in the laboratories of the General Electric Company.The results of careful analysis showed that the chemist was right: these jewels of the laboratory were not like diamonds; they were diamonds.

For some reason，it is easier to remember that someone is a baker than to remember that his surname is Baker．由于某种原因，记住某人是面包师比记住此人姓贝克尔容易。出于某种原因，要记住一个人比要记住一个面包师更容易一些。由于某种原因，记住面包师要比记住贝克尔这个名字更容易。有些原因表明，当人们在烤面包的时候容易记起贝克尔这个名字。出于某种理由，一个人容易记住面包师而不容易记住此人姓什么。

In the 2nd paragraph, what is the chemist trying to say?

After the key scientific fact was discovered, the scientists _____.

According to the passage, the real success probably came _____.

If something is indispensable (Paragraph 6), it is _____.

Which of the following is true according to the passage?