题目
题型：专项题难度：来源：
of the world. The satellites take pictures of the atmosphere (大气), because this is where the weather forms
(形成). They send these pictures to the weather stations. So meteorologists (气象学家) can see the
weather of any part of the world. From the pictures, the scientists can often say how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive
new pictures, the meteorologists compare (比较) them with earlier ones. Perhaps they may find that the clouds
have changed during the last few hours. This may mean that the weather on the ground may soon change, too.
In their next weather forecast, the meteorologists can say this.
So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists
could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days.
Soon, perhaps, they may be able to forecast the weather for a week or more ahead (提前).
B. in the atmosphere
C. above the ground
D. above space
B. clouds form there
C. the weather forms there
D. the pictures can forecast the weather
B. after they have compared new satellite pictures with earlier ones
C. before they received satellite pictures
D. during they study satellite pictures
B. two days
C. five days
D. seven days or even longer
B. receiving pictures of the atmosphere
C. doing other work in many ways
D. weather forecasting
答案
核心考点
试题【阅读短文，选择正确答案。 Now satellites are helping to forecast (预报) the weather. They 】；主要考察你对教育文化类等知识点的理解。[详细]
举一反三
heavy. The snow on the bottom pressed (挤压) together, it became ice.
The ice was very wide and thick. It began to move down the mountain. It was like a river of ice. It was a
glacier (冰河).
Sometimes the glacier moved only a few inches (英寸) each day. As it moved, it took rocks and dirt with it.
It changed the land. In some places, it left hills. In some places, when the glacier melted, it made rivers and
lakes.
A million years ago, there were many big glaciers. Glaciers covered many parts of the world. The glaciers
changed the land.
Glaciers are still at work today. A glacier in the north of Canada is cutting a new path (路) down the side of
a mountain. This glacier will change the land, too.
B. melted
C. became ice
D. turned to rain
3. The story says, "The snow did not melt. It became deep and heavy". The word "it" means .
B. Glaciers do not change the land as they move over it.
C. Glaciers are found only in warm places.
B. Sometimes the glacier moved over ten miles each day.
C. Sometimes the glacier moved only a few inches each day.
B. the high land never changes
C. glaciers changed the land
| Country | Soviet Union (苏联) | The U.S.A | China |
| Date | April 12, 1961 | May 5, 1961 | October 15, 2003 |
| Astronaut | Yuri Gagarin | Alan Shepherd | Yang Liwei |
| Age | 27 | 38 | 38 |
| Spaceship | Vostok 1 | Mercury 3 | Shenzhou V |
| Flight Time | 1 hour and 48 minutes | 15 minutes | 21 hours |
| Height (高度) | 327 km | 185 km | 343 km |
| Circles around the earth | 1 | 0 | 14 |
| 根据短文内容，判断正(T)误(F)。 | |||
| Many young people can use a computer, but few of them know how to look after it. Remember the following tips when you use a computer. Keep your computer in a cool, dry room. Too much or too little heat is bad for computers. Damp (潮湿) is also bad for them. Most computers work best at a temperature of 5-10 degrees centigrade (摄氏度). Do not let people smoke cigarettes near your computer. Smoke of all kinds is very bad for many parts of the computer and can cause many problems. Do not eat or drink when you are near your computer. Pieces of food or drops of water on the keyboard can also cause many problems. Make sure that the keyboard and the screen are the correct height for you. If they are not correct, you will get backache. Make sure the screen is the correct distance from your eyes. If you wear glasses, make sure these glasses are correct for using with the computer. Some people use a different pair of glasses when they use a computer. Keep your screen clean and do not have it too bright. A dirty screen can hurt your eyes. A very bright screen can also be bad for your eyes. If you can afford one, buy a computer screen. It will be better for you than using the screen of a TV set. Never use any software (软件) that you don"t know whether they are clean or not. You must be careful because some software can bring viruses (病毒) into the computer. If your computer has viruses, it can"t work or even breaks down. | |||
| ( )1. According to this passage, most young people can control computers well while paying little attention to the keeping of them. ( )2. Putting the keyboard and the screen too high means you don"t have to look at your manuscript (手稿) while typing. ( )3. Some people use a different pair of glasses when they use a computer because they want to protect their eyes. ( )4. It"s better to use a TV set screen instead of a computer one because a TV set is usually larger than a computer one. ( )5. "Clean software" means the software without any viruses. | |||
| 根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。 | |||
| Big schoolbags have been a serious problem for students 1 a long time. Maybe your schoolbags is too 2 to carry, and it troubles you a lot when you want to find a book out to read. Now an e-textbook will 3 you. 4 is said that e-textbooks are going to be used in Chinese middle schools. An e-textbook , in fact, is a small computer. It is much lighter than a usual schoolbag and easy to carry. 5 it is as small as a book, it can hold all the materials. The students can read the text page by page 6 the screen, 7 notes with the pointer (屏写笔). And even "hand in" their 8 to their teachers by sending-emails. Some people say e-textbooks are good, but some say they may be 9 for the students" eyes. 10 do you think of it? 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. | |||
| 阅读与表达。 | |||
| November 24, 1859 was a special day in London. On the day, many Londoners rushed to a bookstore to buy a book that was just published. The first printing of 1,250 copies sold out on the first day. The popular book was The origin of Species (《物种起源》) by British naturalist Charles Darwin (1809-1882). In the book, Darwin argued that different forms of life could change over time because of natural selection. This means that only those who are best suited to their environment will live and reproduce. Darwin supported his arguments with examples he found during his around-the-world trip in the 1830s. The book laid the foundation of modern biology. It changed how other scientists understood the appearance of life on Earth. A hundred and fifty years later, Darwin"s theory (理论) of natural selection still has great influence in the world of science. But some people have a question: since medicine and modern life have made people healthier, are we still evolving (进化) by natural selection? The answer is yes, according to Stephen Sterns and his team of Yale University researchers. They did a study on 2,238 women in the US. They found that shorter, heavier women have more children then thinner, taller ones. This trend (趋势) runs among their female children and grandchildren. So if this continues, women in 400 years will be about 2cm shorter and a kilo heavier. Sterns" findings are supported by other scientists. For example, John Hawks at the University of Wisconsin, US and his team believe they have found nearly 2,000 gene variations (基因变异) in modern humans. Those variations allow people to drink milk, fight disease and improve brain development. | |||
| 1. Was The origin of Species a popular book? 2. When was the book published? 3. What does natural selection mean? 4. Why does the writer introduce Sterns" findings in the passage? 5. Why is Darwin"s theory of natural selection important? |