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题型:阅读理解-单选 难度:0.85 引用次数:75 题号:16527980

Every now and then, you may hear news of satellites (卫星) sent into space. On Feb 21, for example, US company SpaceX took 46 satellites into orbit (轨道). On Feb 27, China sent 22 satellites into orbit. Why do we need satellites?

There are more than 3, 000 active satellites moving around the earth, according to a Germany company. Satellites have all kinds of roles, such as sending TV signals (信号), showing you the way on the road, helping scientists with their studies, etc.

For example, the 22 satellites China just sent up are part of the BeiDou Navigation Satellite System (北斗卫星导航系统). Shared bikes that use BeiDou chips (芯片) can provide more correct places, making them easier to find. Drones (无人机) can also use BeiDou while flying.

Before satellites, TV signals don’t reach very far. Mountains or tall buildings would block the signals. Phone calls to faraway places were also a problem. With satellites, TV signals and phone calls can be sent directly to a satellite and back down to different places on the earth. SpaceX is trying to go further. It plans to use satellites to provide people with Internet all over the world.

Satellites can also provide information about clouds, oceans, land and ice. They help scientists know changes in weather. By watching wildfires and volcanoes (火山), satellites can help to deal with natural disasters (灾害). Farmers can use satellites pictures to decide the best time to water their plants.

1. What can we know from the second paragraph?
A.People live better with the help of satellites.
B.With satellites, people will not be lost on the road any more.
C.Over 3000 Chinese satellites move around the earth day and night.
D.China has sent more satellites into orbit than the USA in February.
2. What does the underlined word “block” in Paragraph 3 mean?
A.make signals clearerB.make signals weaker
C.make signals strongerD.make signals brighter
3. What’s the main idea of the last paragraph?
A.Satellites do great help to farmers.B.Satellites send phone calls back to the earth.
C.Satellites provide information about the weather.D.Satellites offer to help people travel all over the world.
4. What would be the best title of the passage?
A.More and better satellitesB.Useful satellites in space
C.The development of satellitesD.BeiDou Navigation Satellite

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【推荐1】In Germany, if children want to ride bikes by themselves on the road, they have to pass a test. The test is quite like our driving test.

First, the students have 30 classes about how to ride bikes safely on the road. Each student has a book. The book tells them how to keep safe on the road, how to keep others safe and what to do if they get hurt.

After the classes, the students will have two written tests. Then they will do some riding practice at school. Some policemen will come to give them some help.

At last, the students will have a test on the road. If they can pass the test, they can get a bike license. Then they can ride on the road.

We all know German people are very careful. We can see this from their riding test for the students. The students learn useful riding skills, and at the same time they learn the spirit (精神) of the country.

1. In Germany, children must________ before they can ride bikes on the road.
A.get a bike licenseB.finish middle school
C.get a driving licenseD.reach the age of 16
2. Which is the right order of passing a riding test?
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A.④③①②B.①④②③C.①③④②D.①③②④
3. Which of the following is TRUE according to the text?
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D.Students have to read 30 books for the test.
4. What does the underlined word “license” mean in Chinese?
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【推荐2】Many people don’t think that the number 13 is a lucky number. Many hotels do not have a 13th floor. The floors go from 12 to 14, and there is no number 13. Some people will never sit at a table with 12 other people. They will tell someone to go or ask another person to sit with them.

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Except for some twins, every living thing has its own special DNA.

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Your DNA has billions of instructions that explain why you are the way you are. It’s one of the most amazing things on the earth!

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