Annealing is a way of making metal softer by heating it and then letting it cool very slowly. If metal is heated and then cooled very quickly , for example by dipping it in water , it will be very hard but also very brittle(脆)---that is , It will break easily. Metal that has been annealed is soft but does not break as easily . It is possible to make metal as hard or as soft as is wished, by annealing it. The metal is heated, and allowed to cool slowly , for a certain length of time. The longer the heated metal takes to cool slowly , the softer it becomes . Annealing can also be used on other materials, such as glass. Annealing can make metal _______________.
| A．hard and tough (韧) | B．hard but brittle |
| C．soft but tough | D．soft and brittle |
Why do people put hot metal in water ? ____________
| A．To make it hard | B．To make it soft |
| C．To make it cool | D．To make it brittle |
As suggested by the text , how can glass be made less brittle ?____________
| A．It can be heated and then cooled quickly |
| B．It can be cooled and then heated slowly |
| C．It can be heated and then cooled slowly |
| D．It can be cooled and then heated quickly |
Nothing was going right for Dr.Turner at the hospital. He made a mistake while operating on a patient. He felt sure he was no longer trusted and decided to change his job . One day he learned from the paper that a doctor was looking for a partner (合作者). The doc-tor, whose name was Johnson , lived in Thorby, a small town in the north of England.
A few days later Dr. Turner went to Thorby, and arrived at Dr.Johnson's home early in the afternoon. Though old and a little deaf, Dr.Johnson still had a good brain. He kept talking to the visitor about the town and its people. When they turned to the question of partnership,it was already seven in the evening. Dr. Johnson invited Dr . Turner to have dinner with him in a restaurant before catching the train back to London. Dr . Turner noticed that Dr. Johnson was fond of good food and expensive wines . They had an excellent meal. When the bill was brought, Dr. Johnson felt in his pocket." Oh, dear," he said. "I've forgotten my money." "That's all right,"Dr. Turner said."I'll pay the bill."As he did so,he began to wonder whether Dr. Johnson was worthy of trust. Dr. Turner decided to leave his present job because.
| A．he had never been trusted |
| B．it demanded too great skills |
| C．he believed it offered little hope for his future |
| D．he thought the hospital would like him to leave |
The two doctors spent most of the afternoon talking about.
| A．things of no interest to Dr. Johnson |
| B．things of no importance to Dr. Turner |
| C．health matters |
| D．food and drink |
The story suggests that.
| A．Dr. Johnson did notlike Dr. Turner |
| B．the two doctors would become friends |
| C．the two doctors would not work together |
| D．Dr. Turner decided to stay at his present job |
The words did so in the last sentence mean.
| A．caught the train back to London | B．felt in his pocket |
| C．paid the bill | D．said those words |
Santa Fe, the capital of New Mexico, U.S.A.,is in the central part of the state, on the Santa Fe River, which flows into the Rio Grande 35 kilometres west of the city. More than two thousand metres above sea level, it lies in the Sangre de Cristo Mountains with the Ortiz Mountains to the southeast.
Santa Fe was founded in 1609 by the Spanish (西班牙人)on an old Indian village.In 1680 the Indians seized the place but only held it for twelve years before the Spanish retook it. The city remained under Spanish rule until Mexico won its independence (独立) in 1821. From then on it was a Mexican city until 1846 when it was taken over by American troops.
With a population of 48,953, Santa Fe is now the second largest city in the state. Because of its sunny weather, rich history and surrounding mountains, it is a good place for holiday makers. Besides hunting and skating in the mountains people enjoy shopping in the Indian and Spanish shops, which brings a large income to the city every year. In summer there is an international opera (歌剧) season when operas are shown in a partly-roofed ,open-air theatre daily for people from all over the world.At present Santa Fe belongs to.
| A．India | B．Mexico | C．Spain(西班牙) | D．the United States |
Which of the drawings below gives an idea of what Santa Fe is like?
RG="the" Rio Grande SFR="the" Santa Fe River OM="the" Ortiz Mountains
Santa Fe was under the rule of the Mexicans in.
| A．1675 | B．1695 | C．1816 | D．1833 |
The people who held Santa Fe for the longest period in history were the .
| A．Spanish | B．Indians | C．Mexicans | D．Americans |
What is of special interest to people who visit Santa Fe in summer?
| A．Hunting. | B．Fishing. | C．Watching operas. | D．Doing shopping. |
Santa Fe is best described (描述) as a .
| A．trade centre | B．holiday centre | C．home for all nations | D．seaport city |
One of the reasons for visitors to come to Santa Fe is that it.
| A．has fine weather | B．is the state capital |
| C．has historical monuments | D．is on the Santa Fe River |
If English means endless new words, difficult grammar and sometimes strange pronunciation, you are wrong. Haven't you noticed that you have become smarter since you started to learn a language?
According to a new study by a British university, learning a second language can lead to an increase in your brain power. Researchers found that learning other languages changes grey matter. This is the area of the brain which processes information. It is similar to the way that exercise builds muscles.
The study also found the effect is greater, the younger people learn a second language.
A team led by Dr Andrea Mechelli, from University College London, took a group of Britons who only spoke English. They were compared with a group of "early bilinguals" who had learnt a second language before the age of five, as well as a number of later learners.
Scans showed that grey matter density (密度) in the brain was greater in bilinguals than in people without a second language. But the longer a person waited before mastering a new language, the smaller the difference.
"Our findings suggest that the structure of the brain is changed by the experience of learning a second language," said the scientists.
It means that the change itself increases the ability to learn.
Professor Dylan Vaughan Jones of the University of Wales, has researched the link between bilingualism and maths skills. "Having two languages gives you two windows on the world and makes the brain more flexible (灵活的),"he said. "You are actually going beyond language and have a better understanding of different ideas."
The findings were matched in a study of native Italian speakers who had learned English as a second language between the ages of two and 34. Reading, writing, and comprehension were all tested. The results showed that the younger they started to learn, the better. "Studying a language means you get an entrance to another world," explained the scientists.The main subject talked about in this passage is ______.
| A．science on learning a second language |
| B．man’s ability of learning a second language |
| C．1anguage can help brain power |
| D．1anguage learning and maths study |
In the second paragraph, the writer mentions “exercise” in order to ______.
| A．say language is also a kind of physical labor |
| B．prove that one needs more practice when he (she) is learning a language |
| C．to show the importance of using the language when you learn the language |
| D．make people believe language learning helps grey matter work well |
We may know from the scientific findings that ______.
| A．the earlier you start to learn a second language, the higher the grey matter density is |
| B．there is no difference between a later second language learner and one who doesn't know a second language |
| C．the experience of learning a second language has bad effect on people's brain |
| D．the ability of learning a second language is changing all the time |
The underlined word “bilingual'’ probably means ______.
| A．a researcher on language learning |
| B．a person who is good at learning foreign languages |
| C．a person who can speak two languages |
| D．an active language learner |
Who says Americans worship the almighty (全能的) dollar? It's not true. Having enough free time is more important to most Americans than being rich, according to a new survey.
Only 13 percent of more than 2,400 people questioned in the telephone survey ranked being wealthy as most important to them, while 67 percent ranked free time as their top priority (优先考虑的事), higher than having a successful career, getting married, and having children. "Everyone wants free time to do the things they want to do, young, middle-aged or old," said Richard Morin, of the Pew Social ~ Demographic Trends Project, which conducted the survey. "So our desire to play unites us."
The survey also showed that people who were educated in university valued career success over wealth, so did middle-aged people. Not surprisingly, those who didn't have money, ranked wealth very highly. This included minorities, first generation Americans and less educated people. The survey also revealed that a disproportionate (不成比例的) number of people under the age of 30 and retired people in the group made $ 20,000 or less a year. But the emphasis on wealth lessens with age, with younger people putting value on it but hardly any seniors. "It just diminishes (减弱) with time as the reality sets in that you would never be rich," Morin said. "But also, as for old people the reality sets in that you don't have to be rich to lead a very comfortable and fulfilling life. "
While wealth was not at the top of people's list of priorities, 43 percent still said it was somewhat important.The survey showed that the majority of American people ranked ______ as the most important.
| A．wealth | B．a successful career | C．marriage | D．free time |
Who cares least for wealth, according to the passage?
| A．Young people | B．First generation Americans |
| C．Old people | D．Less-educated people |
According to the survey, what did middle-aged people regard as more important?
| A．success in career | B．education level | C．wealth | D．comfort |
What is the belief of old people according to the third paragraph?
| A．Wealth is as important to the old as health. |
| B．One needs to put money away for his retired life. |
| C．One doesn't have to be rich to live a satisfying life. |
| D．One would never get rich until he retires. |
If you were to walk up to Arthur Bonnet and say, "Hey, Butterfly Man," his face would break into a smile. The title suits him. And he loves it.
Arthur Bonnet works with the Palos Verdes blue butterfly, once thought to have died out. Today the butterfly is coming back thanks to him. But years ago if you'd told him this was what he'd be doing someday, he would have laughed, "You're crazy." As a boy, he used to be a little tough guy on the streets". At age thirteen, he was caught by police stealing. At eighteen, he landed in prison for shooting a man.
"I knew it had hurt my mom," Bonner said after he got out of prison. "So I told myself I would not put my mom through that pain again."
One day he met Professor Mattoni, who was working to rebuild the habitat for an endangered butterfly called E1 Segundo blue.
"I saw the sign 'Butterfly Habitat' and asked, 'How can you have a habitat when the butterflies can just fly away?'" Bonner recalls. "Dr. Mattoni laughed and handed me a magnifying glass (放大镜) , "Look at the leaves. ' I could see all these caterpillars (蝴蝶的幼虫) on the plant. Dr Mattoni explained, 'Without the plant, there are no butterflies. '"
Weeks later, Bonner received a call from Dr. Mattoni, who told him there was a butterfly that needed help. That was how he met the Palos Verdes blue. Since then he's been working for four years to help bring the butterfly back. He grows astragals, the only plant the butterfly eats. He collects butterflies and brings them into a lab to lay eggs. Then he puts new butterflies into the habitat.
The butterfly's population, once almost zero, is now up to 900. For their work, Bonner and Dr. Mattoni received lots of awards. But for Bonnet, he earned something more: he turned his life around.
For six years now Bonnet has kept his promise to stay out of prison. While he’s bringing back the Palos Verdes blue, the butterfly has helped bring him back, too.When he was young, Arthur Bonner
| A．broke the law and ended up in prison |
| B．was fond of shooting and hurt his morn |
| C．often offered necessary help to other people |
| D．often caught butterflies and took them home |
Bonner came to know the Palos Verdes blue after he ______.
| A．found the butterfly had died out |
| B．won many prizes from his professor |
| C．met Dr. Mattoni, a professor of biology |
| D．collected butterflies and put them into a lab |
From the last sentence of the text, we learn that raising butterflies has ______
| A．made Bonner famous | B．changed Bonner's life |
| C．brought Bonner wealth | D．enriched Bonner's knowledge |
Which of the following would be the best title for the text?
| A．A Promise to Morn | B．A Man Saved by Butterflies |
| C．A Story of Butterflies | D．A Job Offered by Dr. Mattoni |