2021-2022学年仁爱版九年级英语上册期末复习Unit4Topic2阅读单选专项练习（含答案）

期末复习：Unit4Topic2阅读单选专项练习
Scientists think that there has been life on the Earth for millions of years. However, we haven’t found life on other planets yet.
The Earth is a planet and it goes around the Sun. Seven other planets also go around the Sun. None of them has an environment with air, so people and things cannot grow. The Sun and its planets are called the solar system（太阳系）. The solar system is a small part of our galaxy（星系）.
Scientists have also discovered many other galaxies in the universe. But they are a long way away because their light has travelled for many years to reach us. It is hard to understand how large the universe is.
So far, scientists have sent lots of spaceships to look at other planets in our solar system, and some spaceships have gone beyond the solar system. However, no one has discovered any life on other planets yet.
1．How many planets go around the Sun
A．Seven. B．Eight. C．Nine.
2．In order to look at other planets in our solar system, scientists have sent many ________.
A．e-mails B．planes C．spaceships
3．________ has found life on other planets.
A．No one B．A scientist C．A traveller
4．Which of the following is TRUE
A．All the planets have an environment with air.
B．The solar system includes the Sun and its planets.
C．There is only one galaxy in the universe.
5．The best title of this passage should be ________.
A．The Earth B．Our solar system C．The stars at night
There is nothing more important than the sun. Without the sun, all living things (生物) on the earth will die.
The sun is a star. In the sky there are thousands of stars like the sun. They are as large as the sun and as hot as the sun. At night you can see many stars, but in the daytime you can see only one star, the sun.
The sun is much closer to us than any other star. That is why it looks the biggest and brightest of all the stars. The distance (距离) of the sun from the earth is as much as 150 million kilometers. Most of the stars are thousands of light years away from the earth.
Do you know the light year Nothing in the world travels faster than the light. It travels 300,000 kilometers a second (秒). And one light year is the distance that light travels in one year.
6．Without the sun, ________.
A．some living things will live on the earth B．people can not live on the earth
C．only some people live on the earth D．there will be no stars in the sky
7．Why does the sun look the biggest and brightest of all the stars
A．Because the sun is much closer to us than any other star.
B．Because there are no other stars in the sky.
C．Because the sun is the oldest star in the sky.
D．Because the other stars only come out at night.
8．How far is it from the sun to the earth
A．150 kilometers. B．150 million kilometers.
C．300 kilometers. D．300 million kilometers.
9．Light travels ________.
A．300,000 kilometers a day B．300,000 kilometers a minute
C．300,000 kilometers a second D．300,000 kilometers an hour
10．Light travels the ________ in the world.
A．quickly B．faster C．fastest D．more quickly
Scientists have always wanted to know more about the universe(宇宙).
Years ago, they knew many things about the moon. They knew how big it was and how far it was from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon.
The moon is about 384,000 kilometers away from the earth. A plane can’t fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket.
How does a rocket fly There is gas(气体) in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly into the sky.
Rocket can fly far out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day rockets may be able to go to any place in space.
11．Scientists have know ________ the moon is.
A．how long B．how big C．how old D．how many
12．The earth is about 384,000 kilometers away from the ________.
A．space B．universe C．moon D．place
13．A plane cannot fly to the moon because ________.
A．there is no air above 240 kilometers away from the earth
B．there is no gas in the place
C．the plane is not strong enough
D．the plane is terrible
14．The hot gas in the rocket is used for ________.
A．keeping the air in the rocket fresh
B．keeping the men in the rocket warm
C．making the rocket fly
D．making fresh air
15．Several rockets without men in them have flown to ________.
A．the stars B．another planet of the sun
C．the sun D．the moon
In July 1969, two American astronauts arrived on the Moon. Their names were Neil Armstrong and Buzz Aldrin. If you visit the Moon today, you will still be able to see their footprints! Besides, they also left the American flag on the Moon.
When astronauts go to the Moon, they need to wear spacesuits and helmets(头盔), because sometimes the Moon is very cold and at other times it is very hot and the spacesuits can protect them. Helmets are worn to help them breathe because there is no air on the Moon.
Do you know that if you weigh 70 pounds on the Earth, you will weigh only 11.5 pounds on the Moon And if you go for a walk on the Moon, you will bounce(弹跳) with each step.
Some people say the Moon is made out of Swiss cheese because there are many holes, called craters, on the Moon. The craters are caused by large rocks from space, hitting the Moon. Here is another interesting thing about the Moon. Do you know that the Moon is like a mirror It reflects(反射) the light of the Sun and sends it to the Earth. In this way, the Moon looks bright and beautiful! Don’t you agree that we have a beautiful Moon
16．What did the American astronauts leave on the Moon when they walked on it
A．A candy bar and a book. B．A map of the Moon.
C．A letter from the Earth. D．Some footprints and an American flag.
17．On the Moon, astronauts need spacesuits to ________.
A．walk fast B．help them breathe
C．make others see them better D．protect them from the cold and heat
18．If you weigh 70 pounds on the Earth, how much will you weigh on the Moon
A．70 pounds. B．100 pounds. C．11.5 pounds. D．0 pound.
19．What are the holes on the Moon called
A．Craters. B．Swiss cheese. C．Rivers. D．Rocks.
20．Why does the Moon shine
A．Because it is a ball of fire. B．Because it gets light from the Earth.
C．Because it's daytime on the Moon. D．Because it reflects the light of the Sun.
Is there intelligent（有智力的）life on other planets For years, scientists said “no,” or “we don’t know.” But today this is changing. Seth Shostak and Alexandra Barnett are astronomers（天文学家）. They believe intelligent life exists（存在）somewhere in the universe. They also think we will soon contact these beings（人；生物）.
Why do Shostak and Barnett think intelligent life exists on other planets The first reason is time. Scientists believe the universe is about 12 billion years old. “This is long enough for other planets to have intelligent life,” say Shostak and Barnett. The second reason is size—the universe is huge. “Tools like the Hubble Telescope（哈勃望远镜）have shown that there are more than 100 billion galaxies,” says Shostak. “And our galaxy, the Milky Way, has more than 100 billion stars. Some planets going around these stars might be similar to Earth.”
In the past, it was hard to look for signs of intelligent life in the universe. But now, powerful telescopes（高倍望远镜）allow scientists to discover smaller planets—the size of Mars or Earth—in other solar systems. These planets might have intelligent life.
Have beings from space already visited Earth “Probably not,” says Shostak. “It’s a long way away.However, intelligent beings may contact us in other ways, such as radio signals（信号）. In fact, they may be trying to communicate with us now, but we don’t have the right tools to receive their messages. However, this is changing. By 2025, we could make contact with other life forms in our universe and we might help each other.”
21．Seth Shostak and Alexandra Barnett are ________.
A．astronomers B．farmers C．singers D．drivers
22．What is the best title for Paragraph 2
A．The Age and Size of Earth
B．Our Galaxy: The Milky Way
C．Why Intelligent Life Might Exist
D．Earth: The Only Planet with Intelligent Life
23．Why was it hard to look for signs of intelligent life in the universe in the past
A．There were not any smaller planets.
B．There were not any powerful telescopes.
C．The astronomers were not interested in them.
D．The Milky Way didn’t exist at that time.
24．Why haven’t beings from space visited us yet according to Shostak
A．They’re afraid of us. B．It’s a long way away.
C．They don’t want to see us. D．They don’t know how to use radio signals.
25．What does the underlined phrase “life forms” in the last paragraph mean
A．Messages. B．Tools. C．Intelligent beings. D．Radio signals.
After traveling more than seven months in space, Tianwen 1 is one step closer to Mars! Tianwen 1, China’s first Mars probe, successfully entered Mars orbit (轨道) in February, according to the China National Space Administration (CNSA). It will stay in orbit for about three months before landing on the red planet.
A small step on the red planet will be a big step for human beings. Humans have launched 46 Mars exploration missions since October 1960, but only 19 of them have been successful, according to China Daily. It’s China’s first spacecraft to Mars, and the missions are rather ambitious. Tianwen 1 aims to achieve “orbiting, landing, and roving (环绕，着陆，巡视)” all in one journey, which will make the country the world’s first to achieve all three goals with one probe, mission scientists said.
Among the three tasks, touchdown on the red planet is the most difficult. The result mainly depends on the “breathtaking (惊险的) seven minutes” to make sure Tianwen 1 land safely, according to the Global Times.
February was Mars month. NASA’s Perseverance Rover (毅力号火星车) landed on Mars on Feb 19, and China’s Tianwen 1 and United Arab Emirates’ Hope Probe have arrived within orbit of the red planet. Although the three countries started their Mars journeys at almost the same time, their missions vary. Hope Probe successfully entered the orbit of Mars on Feb 9. Perseverance will collect samples (样品) of rock and soil for further research. Tianwen 1’s ultimate goal is to land a rover on Mars in May or June, and it will carry out scientific research on Mars’ soil, environment, water and so on.
“When we step into the far planets of the solar system, the magnitude (量) of the resources and timeline required will take global action,” a US official said, highlighting (强调) the importance of international cooperation (合作) in space.
26．Tianwen 1 aims to achieve ________ to set a record in Mars exploration.
A．landing a rover on the red planet
B．bringing back samples from Mars
C．staying in orbit around Mars for months
D．orbiting, landing and roving with one probe
27．The underlined word “it” in Paragraph 4 refers to ________.
A． Hope Probe B． Perseverance
C． Mars D． Tianwen 1
28．What’s the biggest challenge that Tianwen 1 is facing in space
A．Achieving a safe landing.
B．Lack(缺乏) of the resources and timeline.
C．Collecting samples of rock and soil.
D．Completing entering the orbit of Mars.
29．What can we learn about Tianwen 1
A．It is expected to land on Mars in May or June.
B．It will spend 10 months preparing for its landing.
C．It’s one of the 46 successful Mars exploration missions.
D．It’s the world’s first probe to enter the orbit around Mars.
30．What can we infer (推测) from the US official’s words in the last paragraph
A．Space exploration calls for global cooperation.
B．There are risks (危险) in exploring other planets.
C．Tianwen 1 will reach other planets besides Mars.
D．Exploring space takes considerable (相当大的) time and resources.
It’s 2050. The Earth is dying, and moving to Mars seems to be the only way out for humans. A team of American astronauts (宇航员) begin to search on Mars. This is what the movie Red Planet begins with. Known as the Red Planet, Mars is the favourite of writers and filmmakers.
Mars is the fourth planet from the Sun and the next planet beyond the Earth. Mars is the only planet whose surface can be seen from the Earth. It is about half size of our planet.
The surface of Mars is more like the Earth than any other planet. But it is further from the Sun than the Earth, so temperatures on Mars are much lower. Plants and animals can not live now on Mars. But many scientists still believe that such life may have been on Mars long ago.
On 6th August, 1996, scientists discovered a piece of rock from Mars, which fell to the Earth 13, 000 years ago. 10 years later, some scientists still didn’t accept that there was life on Mars. People may not be sure about life on Mars until a sample (样本) of life is brought back. Some further researches are being done in many countries. If you want to know more, please click www.spaceexploration.com.
Choose the right answer according to the passage.
31．Why is the movie Red Planet mentioned
A．To introduce the topic. B．To advise readers to go to Mars.
C．To compare Mars with the Earth. D．To tell stories about American astronauts.
32．What do we know about Mars
A．Mars is as big as the Earth in size.
B．Mars is the fourth planet from the Earth.
C．The surface of Mars is similar to that of the Earth.
D．Mars is one of the planets whose surfaces can be seen from the Earth.
33．No life exists on Mars because ________ .
A．it is too soft B．it is too far C．it is too small D．it is loo cold
34．What did scientists find from Mars in 1996
A．Some plants B．Some animals C．A piece of rock D．Some water
35．The passage is most probably taken from ________ .
A．a notice B．a website C．a diary D．a tour guide
400 years ago, Galileo Galilei, an Italian scientist, built a telescope (望远镜). Since then, scientists have used telescopes to make discoveries. In 1990, the Hubble Space Telescope was sent to space. Soon, a new telescope will take the place of Hubble. It is the James Webb Space Telescope. It is also called JWST and Webb.
Next year, a rocket will take JWST into space. The new telescope will explore farther into space than Hubble. It will travel a million miles from the earth. This will give scientists a better view of the universe(宇宙).
The telescope will also hunt for(寻找) planets that are like the earth. It will do this by looking for light. Webb’s mirror will collect light from objects in space. Its special camera and tools will be able to find light that the human eyes can’t see.
It has been nearly 27 years since the launch (发射) of the Hubble Space Telescope. It has sent back more than a million pictures. Scientists have seen stars being born. They have studied faraway planets. Hubble’s powerful eye has helped us understand space. The telescope still has 10 years of life left.
36．What is the Hubble Space Telescope used to do
A．To follow Webb. B．To take photos of the earth.
C．To protect the earth. D．To find something useful.
37．With the help of JWST, scientists can ________.
A．see farther in the universe B．make more telescopes
C．collect more light D．spend less time taking photos
38．How will JWST hunt for planets
A．By following the sun. B．By looking for light.
C．By looking for water. D．By giving out light.
39．By studying pictures sent by the Hubble Space Telescope, scientists have ________.
A．found water in other stars B．found new places for humans
C．seen stars being born D．seen light that the human eyes can’t see
40．What can we know from the passage
A．WST has been in space for about 27 years.
B．Galileo Galilei invented the Hubble Space Telescope.
C．The Hubble Space Telescope still can work for humans for 10 years.
D．The scientists haven’t gotten any pictures from the Hubble Space Telescope.
From tiny seeds（种子）, great discoveries grow. A mini-garden carried on China's Chang'e 4 moon lander recently became home to the first plant to grow on another world.
This is yet another success for Chang'e 4. On January 2, the probe（探测器）became the first lander to touch down on the far side of the moon. This is the unknown face of the moon that is always looking away from us, so we never see it from down here on the earth. Although it is often regarded as the dark side of the moon, the far side actually gets as much sunshine as the near side. For example, when all we can see is a silver sliver of a new moon, the far side of the moon is in full sunlight.
Part of Chang'e 4's mission（使命）is to see how a moon base could be built for humans, including exploring（探索）whether humans could grow food and other plant products there. Chang'e 4 carried a mini-garden with air, water and soil with seeds planted in it. When plants shoot on the earth, their stems grow away from the gravity（the force that keeps your feet on the ground）, and so they always shoot upwards. The moon's gravity is a sixth as strong as the earth's, so Chang'e 4's experiment was a test: would the earth plants know which way was up on the moon Four days after landing, a tiny cotton shoot showed that they do.
Night has now fallen on the far side of the moon; sunlight will not return until the start of February. As a result, the cotton shoots died. Besides the darkness, the plants can't stand the cold（it can drop to -170℃ on the moon at night）. However, the experiment is a success, since it has proved that it is possible for plants to grow in space.
41．The text is mainly about ________.
A．another success for Chang'e 4 B．Chang'e 4 moon lander
C．tiny seeds in the soil D．the steps of an experiment
42．Which of the following is TRUE about Chang'e 4
A．It carried a mini-garden. B．It landed on the near side of the moon.
C．It explored the moon base. D．It found plants on the moon.
43．From the text we can know that ________.
A．the far side of the moon gets less sunlight
B．we can see the far side of the moon from the earth
C．the stems fail to grow away from the earth's gravity
D．the earth plants know the way to grow on the moon
44．What can be inferred（推理）from the text
A．Plants can be grown on the moon soon. B．It is perfect to do experiments on the moon.
C．The cotton shoots can last days on the moon. D．We can see a new moon at the start of February.
45．In which section of a magazine can you read the text
A．Health and sport. B．History and culture.
C．Science and technology. D．Population and environment.
The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth. At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 o’clock in the evening. For six months, the North Pole is tilted（倾斜）toward the sun. In those months, the Northern Hemisphere（半球）gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.
46．When the Western Hemisphere is having day, the Eastern Hemisphere is having ________.
A．both day and night B．day
C．neither day nor night D．night
47．A place is moved from day into night and from night into day over and over by ________ of the earth.
A．the pushing B．the pulling C．the spinning D．the passing
48．At the equator, day is as long as night ________.
A．sometimes B．never C．usually D．always
49．When the North Pole is tilted toward the sun, the Northern Hemisphere gets ________ sunlight.
A．less B．more C．all D．no
50．When it is winter in China, ________.
A．the USA is tilted toward the sun
B．the South Pole is tilted away from the sun
C．the North Pole is tilted toward the sun
D．the North Pole is tilted away from the sun
参考答案
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