题目
题型：同步题难度：来源：
people like to use. Cable television can help people receive TV programs that they can not get with their ordinary
(常规) antenna.
Television signals (信号) travel in straight lines in all directions. Signals from a TV station move towards the
horizon (地平线) and then go into space. If people live only a few miles from a TV station, they may get a good
picture on their televisions. But if they live more than 50 miles from a station, they may not get good pictures.
CATV began in 1948. People in places far from TV stations had to pay for it. A community antenna was
usually placed on a hill, a mountain or on a high tower. The antenna can receive TV signals and send them into
a small local station (当地电视台).
Today, cable television is used in more and more areas. It is even used in many classrooms all over the
country.
( ) 2. TV signals travel in curved lines.
( ) 3. People who live more than 50 miles from a station mustn"t get any pictures at all.
( ) 4. The antenna sends TV signals to local station.
( ) 5. The cable television can also be used in classrooms today.
答案
核心考点
试题【根据短文内容，判断正(T)误(F)。 CATV is short for "community antenna (公用天线) television"】；主要考察你对教育文化类等知识点的理解。[详细]
举一反三
To find out if dogs could see colors, scientists gave dogs food every time they played a certain piece of
music. The dog got ready to eat only when they heard this piece of music. They did not get ready to eat
when they heard other piece of music.
Then the scientists gave the dogs food every time they showed them a certain color. The dogs got ready
to eat when they saw this color. The scientists then showed the dogs another color. Again the dogs got ready
to eat. The colors were all the same to them.
Colors are not all the same to the monkeys, however. For example, if we put food in a red box and do this
every day, a monkey will always go to the red box to get the food. If we then put food in a blue box, the
monkey won"t go to it.
B. scientists
C. monkeys
D. dogs
B. the same
C. colors
D. food
B. went to a box of food
C. saw the color blue
D. played certain music
B. dogs can"t see more colors than monkeys
C. monkeys can"t see any colors and dogs can
D. monkeys can"t see red and blue
B. doctors
C. scientists
D. monkeys
because it is nearer to us than stars. The moon goes around the earth. The moon is like a ball and looks beautiful.
Don"t you think so?
Now people know quite a lot about the moon. There is no air (空气) or water on the moon, so there are not
any trees or animals, or people on the moon. The moon gets its light from the sun, but some places on the moon
are quite dark (黑暗的). The days on the moon get hotter than boiling (沸腾的) water. The nights get colder
than those in North Pole on the earth. The things get much lighter (更轻的) on the moon than on the earth. And
you can jump higher on the moon than on the earth.
1. We can see the moon a _______ n________.
2. The moon looks b_______ than the stars because it"s much n_______ to us than them.
3. There is no air or w on the moon, so p can"t live there.
4. On the moon it is very h_______ in the day and it"s very c______ at night.
5. The things are much lighter on the m than on the earth, so you can jump h on the moon.
known a lot about it, (A) but they"ve always wanted to know more about it. And they decided to send men to
the Moon. They think it"s the best way to learn more about the moon.
But how do the astronauts (宇航员) get to the moon? The moon is about 384,000 kilometres away from the
earth. They can"t take a plane to the Moon. But something can fly even when there is no air. That is a manned
spacecraft (载人宇宙飞船). Several astronauts have been to the Moon in the manned spacecraft.
A. the planets
B. the Moon
C. the sky
D. the star
B. only 384,000 kilometers
C. about 384,000 kilometers
D. about 348,000 kilometers
B. take photos of it
C. live on it
D. find another moon
B. manned spacecraft
C. space station
D. air
B. The exploration (探索) of the Moon
C. Men to the Moon
D. The manned spacecraft
Before you start to listen, you need to relax. Don"t be nervous. And try to read the questions. These
questions usually help you understand the dialogue or the passage.
Then listen carefully to the first sentence. It usually tells you the main idea of the passage. When
you"re listening, try to do some thinking and take some notes (笔记), such as:
·What happened?
·When, where, and how?
·What does the speaker want to tell us?
In this way, you may understand the passage better.
Please remember not to think about one or two words for a long time. When you hear some words
you don"t know, don"t spend too much time on them. Very often, you"ll find out what they mean later
when you go on with the listening.
B. tips on speaking
C. tips on reading
D. tips on writing
B. relaxed
C. nervous
D. worried
B. where to write the answers
C. the main idea of the passage
D. how much time left (剩余) for the listening test.
B. take some notes
C. understand all the words
D. think about one words for a long time
B. first sentence
C. notes
D. A, B and C
can eat small animals. One famous meat-eating plant is the Venus flytrap (捕蝇草).
The Venus flytrap is a very strange plant. It grows in dry parts of the United States. Its leaves are like the
pages of a book. They can open and close very quickly. Inside the leaves, there are three small hairs. If a fly
touches one of the hairs, the leaf closes quickly. The fly cannot get out. In about half an hour, the leaf presses
the fly until it is dead. Then, the plant covers the fly. Slowly, the plant eats the fly.
Why do plant do it ? Most plants get what they need from the sun , the air , and the ground. In some places,
the ground is very poor. It doesn"t have all these important things, especially nitrogen (氮). Animal meat has a lot
of nitrogen, so some plants eat meat to get what they need. Let"s hope that some of the bigger plants don"t get
the same idea!
B. meat
C. plant
D. animal
B. some parts of Africa
C. wet parts of England
D. dry parts of the United States
B. all plants can eat animals
C. some plants can eat people
D. some plants can eat animals
B. 挤压
C. 打开
D. 松开
B. animals are dangerous to plants
C. plants want to protect themselves against animals
D. plants want to get what they need from animal meat
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