We do everything we can to keep ourselves away from the sun in summer. Some wear hats, others buy umbrellas or sit under trees. But can you imagine what it would be like to have two suns over your head?

Well, the Kepler?47 system(星系) does have two stars in its sky. It is about 5,000 light?years away from us. One of the stars is similar to our sun, but the other is much smaller and less than 1 percent as bright.

In fact, systems with two stars are quite common. “Unlike our sun, many stars are part of multiple?star(多个恒星的) systems where two or more stars move around one another,” said a scientist from NASA's Research Center in the US.

Scientists are more surprised that there could be two planets in the Kepler?47 system because it is very hard for planets to form in such a difficult environment.

One of the planets, Kepler?47b, is closer to the stars. It's three times larger than the Earth. The other one, Kepler?47c, is about 4.5 times the size of the Earth. Most importantly, Kepler?47c is neither too close nor(既不……也不……) too far away from the stars. It means the planet won't be too hot or cold. So, scientists believe there could be water on it or even life.

1.According to Paragraphs 2 and 3, the two stars in the Kepler?47 system ________.

A. are similar to our sun in size B. are quite close to the Earth

C. are as bright as each other D. always move around one another

2.Which is TRUE about the planets in the Kepler?47 system?

A. Kepler?47b is five times as large as the Earth.

B. Kepler?47b is farther away from the stars.

C. Kepler?47c is neither too hot nor too cold.

D. Kepler?47c is a good place for humans to go to.

3.The passage mainly tells us ________.

A. some facts about the Kepler?47 system

B. the stars and planets of multiple?star systems

C. the different systems in space and their history

D. the special environment of our solar system

With the development of the smart phones, Wechat is becoming more and more popular. In fact, it has become one of the most useful tools.

In the first place, Wechat has the function of both of computers and phones. People can send messages, photos and sound, even show their videos on it. Secondly, Wechat helps the users save money. Users needn’t pay any money for sending the messages. People can also talk through Wechat for free. Thirdly, we can share our feelings or opinions with our friends easily and even download the articles we are interested in. At last, we can add friends from the phone book or by searching for the Wechat number online.

But every coin has two sides. If we spend too much time on it, it surely will have a bad effect on both our health and our school work. So as middle school students, we should learn to control ourselves and use it properly.

1.How is Wechat becoming in our life today?

A. popular B. outdate C. useless D. wonderful

2.How many useful ways of Wechat are there in the article?

A. two B. three C. four D. five

3.Wechat can be used as ___________.

A. computers B. phones. C. TV D. A and B

4.People can use Wechat do many things, except _______.

A. send messages B. send photos and sound

C. show their videos D. study English

5.Which one is not TRUE according to the article?

A. People can talk through Wechat for free.

B. People can download the articles they are interested in.

C. People can add friends from the phone book.

D. People can find Wechat has only a good side.

We all wish we could have just one more hour of sleep.

For lucky high school students in England, they’re now going to reset their alarm(闹钟) and get one more hour of sleep. Instead of starting school at 9 a.m., students will begin their school day at 10 a.m.

This is part of a huge study by Oxford University. The experiment( 实验) will see if later classes can help them get good marks.

“We know that something funny happens when you’re a teenager, "a sleep researcher Colin Epsie told The Telegraph. “When you get bad marks, your parents think it is because you're lazy, and everything would be OK if you could get to sleep earlier. Science is telling us that teenagers need to sleep more in the mornings.”

In 2009, some scientists did other similar experiments. They found that 19% students got better marks in Maths and Science.

Is one more hour's sleep good for all students' studies? Yet we’ll have to wait until 2018 to find out these exciting results!

1.Why do the students in England reset their alarm?

A. Because they are too lazy to get up early. B. Because they want to start school at 9 a.m.

C. Because they can get another hour of sleep. D. Because the time of their alarms are wrong.

2.Which of the following is True about the experiment?

A. It is studied by Oxford University. B. We can know the result now.

C. It shows that all students get better marks. D. It tells us more sleep is bad for students.

3.The scientists do the experiments to .

A. know more about students' sleep

B. see if it is good for students’ study

C. help students keep healthy

D. see better marks of Maths and Science

4.What does “it” refer to in Paragraph 4?

A. you get to sleep earlier

B. you want to sleep more

C. you do not do well in study

D. you are a teenager

5.We can find this article from .

A. a travel guide B. newspaper C. a cartoon book D. a food magazine

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网