题目列表(包括答案和解析)
Simply by analyzing a drop of blood, a doctor will be able to diagnose a birth defect or even cancer when it is in the early stage; using new technology, a material lighter but much stronger than steel can be produced.
These may sound like dreams at present. But the dreams may soon come true as research findings in laboratories are being turned into products more rapidly in the new century, according to experts participating in the fourth Asia-Pacific Economic Cooperation (APEC) Technomart, a technology exhibition and trade fair in Suzhou.
"Most people think nano-technology(纳米技术)is too far-fetched to be real. But in fact nano-technology has been applied in a wide range of fields, such as medicine. It is coming into our daily life," said Cheng Jiachong from a Hong Kong-based nano-technology firm.
Nano-technology based on the nanometer, the unit of which is a billionth of a meter, enables scientists to have new concepts of disease diagnosis and treatment on a molecular(分子)and atomic scale, Cheng said.
By using nanometer particles, a doctor can separate the fetus cells(胚胎细胞)from the blood of a pregnant woman to see if the development of the fetus is normal. This method is also being used in the early diagnosis of cancer and heart disease, he said.
One of the most significant impacts of nano-technology is at the bio-inorganic materials interface, according to Greg Tegart, executive advisor of the APEC Center for Technology Foresight.
"By combining enzymes(酶)and silicon chips we can produce biosensors. These could be implanted in humans or animals to monitor health and to deliver corrective doses(剂量)of drugs," he told the participants a technology forum during the exhibition.
"Nano-technology could affect the production of nearly every man-made object, from automobiles, tires and computer circuits(电路), to advanced medicines and tissue replacement, and lead to the invention of objects yet to be imagined," said David Minns, a special advisor to the National Research Council of Canada.
It has been shown that carbon nano-tubes are ten times as strong as steel, with one sixth of the weight, and nano-scale systems have the potential to make supersonic transport cost- effective and to increase computer efficiency by millions of times, he said.
The experts agreed that the APEC technology exhibition and trade fair provided many chances for exchanges of innovative ideas and products.
【小题1】Realization of the dreams mentioned in the first paragraph will mainly base on ________.
| A.APEC | B.Chinese scientist |
| C.the APEC Center for Technology Foresight | D.Nano-technology |
| A. | B. | C. | D. |
| A.Nano-technology could only be used to invent new objects. |
| B.Nano-technology could be widely used to produce or invent objects. |
| C.Nano-technology is a money-consuming technology. |
| D.Nano-technology can not be used to improve the service of Internet. |
| A.stronger and lighter | B.lighter but as strong |
| C.stronger but as light | D.poor in quality |
Stepping into a pool of water is common enough, but who could ever imagine stepping into a pool of fish? In February of 1974, Bill Tapp, an Australian farmer, saw a rain of fish that covered his farm. How surprised he must have been!
What caused this strange occurrence? This is a question that had long puzzled people who study fish. The answer turned out to be a combination of wind and storm.
When it is spring in the northern part of the world, it is fall in Australia. Throughout the autumn season, terrible storms arise and rains flood the land. The strong winds sweep over Australia like huge vacuum cleaners (吸尘器), collecting seaweed, pieces of wood, and even schools of fish. Strong winds may carry these bits of nature for many miles before vacuum dropping them on fields, houses, and astonished people.
Although they seem unusual, fish-falls occur frequently in Australia. When Bill Tapp was asked to describe the scene of fish, he remarked, “They look like millions of dead birds falling down.” His statement is not surprising. The wonders of the natural world are as commo
n as rain. Nature, with its infinite wonders, can create waterfalls that flow upward and fish that fall out of the sky.
【小题1】 What is this passage about?
| A.A sad story. | B.Australia’s northern part. |
| C.A rain of fish. | D.The damage done by floods. |
| A.quite often | B.on large farms |
| C.only in winter | D.when the air is calm |
| A.easy | B.difficult | C.countless | D.dangerous |
The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning(旋转) of the earth. At the equator(赤道) day and night are sometimes the same length. They are each twelve hours long. The sun rises at 6 in the morning and sets at 6 in the evening. For six months the North Pole is tilted(倾斜) toward the sun. In those months the Northern Hemisphere(半球) gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than night. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.
【小题1】When the Western Hemisphere is having day, the Eastern Hemisphere is having ______.
| A.both day and night | B.day | C.neither day nor night | D.night |
| A.the pushing | B.the pulling | C.the spinning | D.the passing |
| A.sometimes | B.never | C.usually | D.always |
| A.less | B.more | C.all | D.no |
| A.the USA is tilted toward the sun |
| B.the South Pole is tilted away from the sun |
| C.the North Pole is tilted toward the sun |
| D.the North Pole is tilted away from the sun |
第Ⅱ卷
第四部分 写作(共两节,满分35分)
第一节 短文改错(共10小题;每小题1分,满分10分)
此题要求改正所给短文中的错误。对标有题号的每一行做出判断:如无错误,在该行右边横线上画一个勾(√);如有错误(每行只有—个错误),则按下列情况改正:
此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
此行缺—个词:在缺词处加—个漏字符号(∧),在该行右边横线上写出该加的词。
此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。
注意:原行没有错的不要改。
Last Sunday, my friends and I went outing. 76. ________
We started out earlier in the morning. It didn’t take 77. ________
long to get to the South Lake, where is 10 kilometers 78. ________
away the city. After we arrived there, we divided 79. ________
ourselves into two team. We had a wonderful time 80. ________
playing football. When it is time for lunch, 81. ________
we made a fire to cook a meal. We shared that 82. ________
we brought in with us. After that, we rowed boats 83. ________
in the lake and took a lot of pictures. We went 84. ________
back home late in the afternoon, tiring and happy. 85. ________
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Test-taking tips
Do you sweat, check your pencil, and feel butterflies in your stomach as your teacher hands out the test paper? A lot of people feel anxious when it is time to take a test. Here are some tips for taking tests:
1 .Your memory recall will be much better if you have had enough rest. In a scientific study, people who got enough sleep before taking a math test did better than those who stayed up all night studying.
Read the test through first. Once you have the test paper in front of you, read over the entire test, checking out how long it is and all the parts that you are expected to complete. 2 .If something seems unclear before you start, do not panic: ask the teacher.
Focus on addressing each question individually. 3 . Instead, answer the best way you can or skip over the question and come back to it after you have answered other questions.
Relax. 4 .Of course you can not get up and move around in the middle of a test, but you can wiggle (扭动) your fingers and toes, take four or five deep breaths. As we all know, It can be easy to forget things we know well. During a test, if you forget something and start to get tense, it suddenly becomes much more difficult to remember.
Finished already? Although most teachers will let you hand your test paper in early, it is usually a good idea to spend any extra time checking over your work. 5 .On the other hand, if you have 5 minutes until the bell rings and you are still writing, wind up whatever you are working on without panic.
| A. Be sure you have studied properly. B. Get enough sleep the night before the test. C. This will allow you to decide how much time you have for each section. D. As you take the test, if you do not know an answer, do not worry about it. E. As the teacher hands out the test paper, be sure you know what is expected of you. F. You can also add details that you may not have thought you’d have time for. G. If you are so nervous that you blank out, you might need a mini-break. |
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