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题型:阅读选择 题类:真题 难易度:普通

四川省内江市2019年中考英语试卷

阅读理解

    For thousands of years, humans have explored(探索)the Earth. Nowadays, we are exploring space. Astronomers (天文学家) are the modern﹣day explorers, Now, many astronomers are looking for new planets and new places for humans to live in the future. But where do astronomers start looking?

    First of all, astronomers look for a star. That's because our own Earth moves around a star (the Sun). More importantly, it is the correct distance( 距离) from the Sun for heat and light. So when astronomers have found the star, they look at the planets around it. In recent years, astronomers have found nearly 400 new planets with stars. However, many of these planets are either too near to the star or too far away.

    However, if the planet is in a good position, astronomers look for three key things: water, air and rock. Water is important because all life needs water. Humans can drink it and they can also grow plants with water. And plants produce air for humans to breathe and food to eat. Rock on a planet is also important. That's because there is often water under the rock.

    After many years of scrutinizing, astronomers have found a planet that is similar to the Earth. It's Gliese 581g and it's near a star. The astronomers think it has water and rock and the average(平均的) temperature is between -31℃ and -12℃.That's cold, but not colder than Antarctica or the Arctic Circle, for example. Gliese 581g is bigger than the Earth. A year on Gliese 581g is only 37 Earth days instead of 365. But astronomers do not think these are big differences and some of them think Gliese 581g will be a new Earth. However, Gliese 58Ig is twenty light years from the Earth.

(1)、What do astronomers have to find first before starting to look for a new place for humans to live?
A、new star. B、A new planet. C、Some heat. D、Some light.
(2)、What does the rock on a planet tell us?
A、The star is in a right position. B、We may discover water under it. C、The planet is too near to the Sun. D、There can be air around the rock.
(3)、What does the underlined word "scrutinizing" mean in the last paragraph?
A、discussing. B、waiting. C、looking. D、traveling.
(4)、What's the main idea of the text?
A、Gliese 581g is already a new Earth. B、There are planets similar to our Earth. C、Water, air and rock are important. D、Astronomers are looking for a new Earth.
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Museums are active centers of learning. In a science museum, people can learn about nature and technology as well as physics and chemistry. Visiting museums is a good choice to spend a holiday for people of all ages. But there're some rules when visiting museums. Take an art museum, for example.

Keep quiet. You can talk, but keep the voice down and be polite to those around you. You should turn off your phone or put it on silent. Sounds from your phone may disturb (打扰) others. If a call must be made, you should go outside to make it. 

Ask before taking photos. Some museums welcome visitors to photograph or videotape works of art. However, please be careful with the sign "no photography" which means taking photos is not allowed for that work or exhibition. If you take photos without permission, you will be in trouble. Maybe you will be punished. 

Do not touch works of art! Your touch may not seem like much, but even the slightest (最轻的) touch can damage the surface of a painting, discolor stone, and even rust metal. Keep a safe distance between you and each work of art. This helps to avoid accidental touching.

Never bring food or drinks into the museum. It's no good eating or drinking there. The art in the museum will provide plenty of food for thought as well as a dinner for the eyes!

Running and pushing are not allowed in the museum. Proper museum behavior is necessary to avoid accidentally hitting or damaging works of art.

Remember: ____. If you obey them, you will surely enjoy yourself in the museum.

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