Many countries have ________ a lot of rockets...

Many countries have ________ a lot of rockets into space.

A．sent             B．spent             C．flown             D．made

九年级英语单项填空中等难度题查看答案及解析

A lot of rich land has changed into desert, because farmers have　　　　 many trees to grow crops in the field.

A. turn down

B.　 cut down

C.broken down

九年级英语单项填空简单题查看答案及解析

Some day you may go to the moon. A tall rocket will take you into space. The rocket flies a long way to a space station. You will stop there for a short time. Then a big spaceship will take you to the moon.

About three days later, the ship slowly goes down and gets to the moon. You are now on the moon, but you can not leave your spaceship. You must put on a space suit for the moon. It is very hot in the day and very cold at night. If you don't wear a space suit, you can't live there. You jump out of the spaceship and begin to walk. The moon is lighter than those on the earth. You jump high in the air every time you take a step.

The moon moves slowly, so one day on the moon is as long as two weeks on the earth and one night is just as long as two weeks on the earth. It never rains on the moon, and everything on the moon is dry. There are no trees or other living things of any kind. There is nothing to do there. The earth is a far better place to live on, but scientists are trying to make the best of the moon.

1.How can you go into space? By ______.

A.plane B.spaceship C.rocket D.space suit

2.How can you get to the moon?

A.By rocket I go into space.

B.It will take me a long time to get to the moon by rocket.

C.The rocket will take me to the space station and by spaceship I will get there.

D.A and C.

3.Which is right?

A.Days are longer but nights are shorter.

B.Days are shorter but nights are longer on the moon.

C.Days are shorter but nights are shorter on the moon.

D.Days are longer and nights are longer on the moon.

4.There is no life on the moon because _______.

A.the moon moves very slowly B.there is no air or water

C.day is hotter but night is colder D.night is hotter but day is colder

5.On the moon if you are in a space suit you can move _______ than on the earth.

A.more easily B.harder C.more slowly D.more quickly

九年级英语阅读单选中等难度题查看答案及解析

Congratulations! The Long March 5B carrier rocket (运载火箭), successfully went into space ______ April 5, 2020.

A.in B.on C.at D.for

九年级英语单选题简单题查看答案及解析

The rockets take astronauts and man-made satellites into space. The satellites are used for communication, weather monitoring and research. But how do satellites stay up without falling down?

There are two opposite forces (力量) acting on the satellite. One of them is the force of gravitation (地心引力), which tries to pull the satellite towards the earth. The other force is created by the rotation (旋转) of the satellite around the earth. This force tries to take the satellite away from the earth. With these two forces, the satellite goes round and round. The gravitational pull of the earth (the force which pulls everything towards the ground) is like a rope which keeps the satellite from flying away.

Everything that goes up has to come down. It is only a matter of time before a satellite comes back to the earth. As time goes by, the satellite loses its speed, which makes the gravitational pull stronger than the force pulling it away. This makes the satellite crash (坠落) down to the earth.

1.Which of the following uses of satellites is NOT mentioned?

A. communication

B. monitoring the weather condition

C. doing some research

D. taking pictures

2.The force that pulls the satellite towards the earth is created by ________.

A. the earth

B. the satellite itself

C. the rotation of the satellite

D. the rope

3.Why can’t the satellites fly away?

A. Because of the force from the earth.

B. Because the satellite is too big.

C. Because of the force created by the rotation of the satellite around the earth.

D. Because people on earth have made ropes to tie the satellites tightly.

4.The satellite will finally crashes down to the earth ________.

A. when it flies faster

B. when its speed slows down

C. when people cut the rope

D. when there is no electricity in it

5.Which of the following is TRUE according to the passage?

A. There are four forces acting on the satellite.

B. The force of gravitation makes the satellite go round and round.

C. As time goes by, the satellite will finally fall down.

D. The satellite will stay in space forever.

九年级英语阅读理解困难题查看答案及解析

The rockets take astronauts and man-made satellites into space. The satellites are used for communication, weather monitoring and research. But how do satellites stay up without Falling down?

There are two opposite forces acting on the satellite. One of them is the force of gravitation(地心引力), which tries to pull the satellite toward the earth. The other force is created by the rotation (旋转)of the satellite around the earth. This force tries to take the satellite away from the earth. With these two forces, the satellite goes round and round. The gravitational pull of the earth is like a rope which keeps the satellite from flying away.

Everything that goes up has to come down. It is only a matter of time before a satellite comes back to the earth. As time goes by, the satellite loses its speed, which makes the gravitational pull stronger than the force pulling it away. This makes the satellite crash (坠落)down to the earth.

1.The force that pulls the satellite towards the earth is created by ________.

A. the earth B. the satellite itself

C. the rotation of the satellite D. the rope

2.Why can't the satellites fly away?

A. Because of the force from the earth.

B. Because the satellite is too big.

C. Because of the force created by the rotation of the satellite around the earth.

D. Because people on earth have made ropes to tie the satellites tightly.

3.Which of the following is TRUE according to the passage?

A. There are four forces acting on the satellite.

B. The force of gravitation makes the satellite go round and round.

C. As time goes by, the satellite will finally fall down.

D. The satellite will stay in space forever.

九年级英语阅读单选困难题查看答案及解析

The rockets take astronauts and man-made satellites into space. The satellites are used for communication, weather monitoring and research. But how do satellites stay up without falling down?

There are two opposite forces (力量) acting on the satellite. One of them is the force of gravitation (地心引力), which tries to pull the satellite towards the earth. The other force is created by the rotation (旋转) of the satellite around the earth. This force tries to take the satellite away from the earth. With these two forces, the satellite goes round and round. The gravitational pull of the earth (the force which pulls everything towards the ground) is like a rope which keeps the satellite from flying away.

Everything that goes up has to come down. It is only a matter of time before a satellite comes back to the earth. As time goes by, the satellite loses its speed, which makes the gravitational pull stronger than the force pulling it away. This makes the satellite crash (坠落) down to the earth.

1.Which of the following uses of satellites is NOT mentioned?

A. communication

B. monitoring the weather condition

C. doing some research

D. taking pictures

2.The force that pulls the satellite towards the earth is created by ________.

A. the earth

B. the satellite itself

C. the rotation of the satellite

D. the rope

3.Why can’t the satellites fly away?

A. Because of the force from the earth.

B. Because the satellite is too big.

C. Because of the force created by the rotation of the satellite around the earth.

D. Because people on earth have made ropes to tie the satellites tightly.

4.The satellite will finally crashes down to the earth ________.

A. when it flies faster

B. when its speed slows down

C. when people cut the rope

D. when there is no electricity in it

5.Which of the following is TRUE according to the passage?

A. There are four forces acting on the satellite.

B. The force of gravitation makes the satellite go round and round.

C. As time goes by, the satellite will finally fall down.

D. The satellite will stay in space forever.

九年级英语阅读单选中等难度题查看答案及解析

5… 4 … 3 … 2 … 1… BLAST OFF! A rocket left the Earth and lifted into space. Sally Ride was on the rocket. She was the first American woman in space. She was also the youngest astronaut to circle Earth.

Sally Ride grew up in California. She liked to play tennis, and she loved learning about outer space. When Sally Ride finished college, she read in the newspaper that the United States Space program was looking for astronauts. This was the first time the program wanted women to be astronauts. She sent a letter saying she would like to become an astronaut. Later Sally Ride was chosen for the program. She was 27 years old then.

In 1978 Sally Ride moved from California to Texas to learn her new job. She studied very hard. She needed to know about all of the lights on the control panel. Sally Ride also needed to know how to do experiments while in space. The experiments would help people learn more about the Earth.

In 1983 Sally Ride flew on the space shuttle named Challenger for the first time. She was only 32 years old then. When the flight ended, the shuttle landed safely on the Earth.

Sally Ride said that the best part of space travel was floating (飘流). She liked to float around in the Challenger. She also liked looking out of the windows. She said that it was great fun. In 1984 Sally Ride made her last trip into space.

1.The author wrote this article to 　　.

A. tell readers about space

B. get readers to become astronauts

C. tell readers about a special astronaut

D. give readers facts about space shuttles

2.Why was Sally Ride an important person?

A. Because she liked to learn about outer space.

B. Because she told people about space.

C. Because she traveled to many countries.

D. Because she was the first American woman in space.

3.Which sentence shows that Sally enjoyed her job?

A. She is also the youngest astronaut to circle Earth.

B. Later Sally Ride was chosen for the program.

C. The experiments would help people learn more about Earth.

D. She said that it was great fun.

4.What is Paragraph 4 mainly about?

A. Sally Ride’s first trip into space.

B. How old Sally Ride was in 1983.

C. Sally Ride’s childhood in California.

D. What Sally Ride did in space.

5.Sally Ride’s favorite part of space travel was 　　.

A. landing the shuttle

B. going around the Earth

C. floating in the shuttle

D. learning about stars

九年级英语阅读单选中等难度题查看答案及解析

明年，另外两枚火箭将会发射升空。（完成译句）

Next year, another two rockets will be_______ _______into space.

九年级英语完成句子简单题查看答案及解析

A lot of countries wanted to know 　　　　 .

A. if the MH 370 will fall into the Indian Ocean　　 B. that there is a fight on the MH370

C. when did the plane accident happen in Malaysia　　 D. what caused the plane accident in Malaysia

九年级英语单选题中等难度题查看答案及解析