In the future, people may travel to Mars (火星) by water-powered spaceship! Today's spaceships are fine for getting things into space, but they are not so good at travelling long distances. These spaceships burn chemical fuels (燃料) and they are very expensive. Scientists say that a water-powered spaceship could make the trip to Mars much cheaper. The idea is just in the planning stages now, but scientists think such a spaceship could be developed soon.
The key to the water-powered spaceship is the engine (发动机). Regular engines push spaceships by burning fuel. The water engine will use steam, created by solar panels (太阳能板) that heat water to a high temperature. Of course, the spaceship will have to carry a lot of water for the long trip to Mars.
Today's spaceships could not carry that much water. But scientists think that a spaceship blown up like a balloon will be able to.
One US company has already developed a spaceship like this. These spaceships are made of a strong material. Two of them have already been sent up into space, using rockets and then later filled with air. "Balloon" spaceships could be very large and carry enough water for a long trip. With the "Balloon" spaceships, enough water could be carried to power the engines and grow food during the trip. And the people on the spaceship might even get to take a hot bath!
Scientists say the biggest advantage of such a spaceship would be cost. The "Balloon" spaceship uses water to push it through space and costs about one thirtieth of a normal spaceship. Such savings naturally encourage continued research into balloon spaceships and water engines. If these scientists are correct, we may soon be on our way to Mars in a spaceship powered by water.
1.Which sentence best describes the main idea of the passage above?
A.The key to the water-powered spaceship is the engine.
B.In the future, people may travel to Mars by water-powered spaceship.
C.One US company has already developed a spaceship like this.
D.Scientists say the biggest advantage of such a spaceship would be cost.
2.What do you think is omitted (省略) at the end of the underlined sentence?
A.use steam B.push spaceships
C.heat water D.carry that much water
3.Besides growing food, what else might astronauts do with the rest of the water?
A.Take a hot bath. B.Freeze dangerous things.
C.Blow up a balloon. D.Change the surface of Mars.
4.On which website can we probably read this passage?
A.www. freedictionary. com/power B.www. mooc. cn/music
C.www. chinadaily. com. cn/culture D.www. space. com/spaceflight
九年级英语阅读单选中等难度题
In the future, people may travel to Mars (火星) by water-powered spaceship! Today's spaceships are fine for getting things into space, but they are not so good at travelling long distances. These spaceships burn chemical fuels (燃料) and they are very expensive. Scientists say that a water-powered spaceship could make the trip to Mars much cheaper. The idea is just in the planning stages now, but scientists think such a spaceship could be developed soon.
The key to the water-powered spaceship is the engine (发动机). Regular engines push spaceships by burning fuel. The water engine will use steam, created by solar panels (太阳能板) that heat water to a high temperature. Of course, the spaceship will have to carry a lot of water for the long trip to Mars.
Today's spaceships could not carry that much water. But scientists think that a spaceship blown up like a balloon will be able to.
One US company has already developed a spaceship like this. These spaceships are made of a strong material. Two of them have already been sent up into space, using rockets and then later filled with air. "Balloon" spaceships could be very large and carry enough water for a long trip. With the "Balloon" spaceships, enough water could be carried to power the engines and grow food during the trip. And the people on the spaceship might even get to take a hot bath!
Scientists say the biggest advantage of such a spaceship would be cost. The "Balloon" spaceship uses water to push it through space and costs about one thirtieth of a normal spaceship. Such savings naturally encourage continued research into balloon spaceships and water engines. If these scientists are correct, we may soon be on our way to Mars in a spaceship powered by water.
1.Which sentence best describes the main idea of the passage above?
A.The key to the water-powered spaceship is the engine.
B.In the future, people may travel to Mars by water-powered spaceship.
C.One US company has already developed a spaceship like this.
D.Scientists say the biggest advantage of such a spaceship would be cost.
2.What do you think is omitted (省略) at the end of the underlined sentence?
A.use steam B.push spaceships
C.heat water D.carry that much water
3.Besides growing food, what else might astronauts do with the rest of the water?
A.Take a hot bath. B.Freeze dangerous things.
C.Blow up a balloon. D.Change the surface of Mars.
4.On which website can we probably read this passage?
A.www. freedictionary. com/power B.www. mooc. cn/music
C.www. chinadaily. com. cn/culture D.www. space. com/spaceflight
九年级英语阅读单选中等难度题查看答案及解析
Now, it may be difficult to predict the future, but many people believe that we will live on Mars by the year 2100. Our own planet, Earth, is becoming more and more crowded and polluted. Well, what problems will we need to solve before we prepare to go to Mars?
First of all, transport should be much better. At present, humans need to spend months going to Mars by spaceship. However, by 2100, spaceship can travel at half the speed of light. It might take us two or three days to get there!
Secondly, humans need food, water and air to live. Scientists should develop plants that can be grown on Mars. These plants will produce the food, water and air that we need. However, there is no answer for all the problems now.
There is also a problem for us to live on Mars. Mars attracts us much less than the Earth does. This will be dangerous bec ause we could easily jump too high and fly slowly away into space there. We will have to wear special shoes to make ourselves heavier.
In some ways, life on Mars may not be better than that on the earth today. Food will not be the same --- meals will probably be in the form of pills and will not be as delicious as they are today. Also, space travel will probably make many people feel very uncomfortable.
1. According to the passage, by the year 2100, we will possibly live________.
A. on Mars B. on the moon.
C. in the spaceship. D. in the sea.
2. So far, how long does it take us from the earth to Mars by spaceship?
A. Two or three days. B. A few days.
C. A few months. D. A few years.
3.According to the passage, which of the following is wrong?
A. A special plant which can produce water, air and food should be needed on Mars
B. We may go to Mars when transport is much better and faster.
C. We can jump higher on Mars than on the earth.
D. Food on Mars will be much better to eat.
4.Which looks like life on Mars according to the passage?
A. We can wear the shoes that we like to wear.
B. We can drink easily and conveniently.
C. We can walk faster than on the earth.
D. We can boil food to eat.
5.Why do we want to live on Mars?
A. Life on Mars is more interesting than that on the earth.
B. The earth is becoming dirty and crowded.
C. The journey to Mars is very interesting.
D. The scientists want us to do that.
九年级英语阅读理解中等难度题查看答案及解析
Scientists are working hard to make possible for people to live on Mars in the future.
A. it B. that C. this D. one
九年级英语单项填空中等难度题查看答案及解析
Scientists are working hard to make _______ possible for people to live on Mars in the future.
A. it B. that C. this D. one
九年级英语单项填空中等难度题查看答案及解析
Scientists are working hard to make _______ possible for people to live on Mars in the future.
A. it B. that C. this D. one
九年级英语单项填空中等难度题查看答案及解析
Scientists are working hard to make _______ possible for people to live on Mars in the future.
A. it B. that C. this D. one
九年级英语单选题中等难度题查看答案及解析
---If more roads in the future, it will be much easier for people to travel around Xiangyang.
---I agree.
A.will be finished B.have finished
C.are finishing D.are finished
九年级英语单项填空中等难度题查看答案及解析
---If more roads in the future, it will be much easier for people to travel around Xiangyang.
---I agree.
A. will be finished B. have finished C. are finishing D. are finished
九年级英语单项填空中等难度题查看答案及解析
---If more roads in the future, it will be much easier for people to travel around Xiangyang.
---I agree.
A.will be finished B.have finished
C.are finishing D.are finished
九年级英语单项填空简单题查看答案及解析
阅读理解。
Someday in the future we may not need to have money in our pockets. Is life easier when people don’t need to carry any money at all? Is money heavy to carry? Is it safe to carry money? Maybe in the future each of us will have only one small credit card(信用卡). We will use it instead of money to buy all the things.
Of course we may still have some of the same problems with cards we now have with money. For example, we lose money from time to time. Maybe we will lose the cards. Maybe someone will take the cards. Someone may even make a card that looks like our cards. Since we can’t buy anything without our cards, the credit cards may be no better than money.
Is there something easier to use than credit cards? Each of us has a thumbprint(拇指指纹). No two thumbprints are the same. Maybe someday the government will keep people’s thumbprints with a number. When you want to buy something, you will put your thumb on a machine or a computer. Each store or business will posses one. Everyone’s thumbprints will be in the computer. It will be difficult to lose our thumbprints! It will be difficult for someone to steal it or to make one like it.
1.The writer probably agrees that credit cards are ________ to carry than money.
A.heavier B. easier C. more difficult
2.What may be a problem with credit cards in the future?
A. We may lose the cards from time to time.
B.We won’t be able to make enough cards.
C.We may not know how to use the cards.
3.Someday the government may keep people’s thumbprints with a ________.
A.sign B. note C. number
4.The underlined word “posses” probably means “________” in English.
A.lend B. have C. sell
5.In the writer’s opinion, it’ll be the best way to buy things with ________ in the future.
A.money B. credit cards C. thumbprints
九年级英语阅读理解中等难度题查看答案及解析