In many stories on TV and in science fiction，humans can travel to stars far away．But so far，people have only been able to get to the moon．
What if a person wants to get to a star far away？it would take a lifetime to travel．People should have to move at least at the speed（速度）of light．But in fact，nothing can move faster than light．
Light travels more than 186，000 miles a second（秒），or about 11 million miles a minute．In one year，light travels about 6 trillion（6，000，000，000，000）miles．That great distance is called a light-year（光年）．It is used to measure（測(cè)量）distance in space．
Strange things happen to an object（物體）when it moves very fast．If an object moves at 86% of the speed of light，It will be twice as heavy as it is at rest．A stick appears shorter．A clock runs more slowly．A person would not age so fast in space as on the earth．
Alpha Centauri is the closest star to the sun．It is over four light-years away．So if a human traveled at the speed of light，it would take him nine years to go to Alpha Centauri and come back．
根據(jù)短文內(nèi)容，選擇最佳答案．
（1）About the speed of light，which of the following is true？ DD
A．Light travels about 11 million miles a second．
B．Light travels more than 186，000 miles a minute．
C．Light travels about 11 million miles an hour．
D．Light travels about 6 trillion miles a year．
（2）So far the farthest place humans have got to is CC．
A．Alpha Centauri
B．the sun
C．the moon
D．the earth
（3）The underlined word"age"means BB．
A．老年
B．變老
C．年齡
D．時(shí)代
（4）It would take a person AA to get to Alpha Centauri at the speed of light．
A．more than 4 years
B．less than 2 years
C．a(chǎn)bout 9 years
D．a(chǎn)bout 11 years
（5）What's the best title（標(biāo)題）of this article？ CC
A．The distance between the sun and other stars．
B．How to travel to Alpha Centauri？
C．Nothing can move faster than light．
D．Life is too short．
【答案】D；C；B；A；C
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/6/27 10:35:59組卷：8引用：4難度：0.5
相似題
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1．There are countless articles telling us how the Internet has made our lives more convenient.But the Internet has done much more for people than simply make life more convenient.
Jan Tchamani，an English teacher in the UK，suddenly developed a serious illness and had to stop her job.At age 50，she found herself out of work and stayed at home with only her computer to keep her company.After a while，she discovered that surfing the Internet could help her feel less lonely and bored.She could listen to music，watch films，play games，and learn about the world.She also joined an online group where she could talk about her problems and get support and advice from others.She realized that one of the greatest benefits of the Internet was making people closer.
She was so inspired by the people online that she decided to start an IT club to teach older people how to use computers and the Internet.She and her friends now organize events and collect money to pay for private teachers.Many people have been helped by the club.A 59-year-old man learnt how to apply for work online and found a great job.Now that he works and can take care of himself.A 61-year-old woman who was living alone has started a small online company together with two friends.She no longer feels lonely.
Jan has started taking online classes to learn more about how to use the Internet to make society better.She believes that it is highly important to know how to use new technology.Her next goal is to start a charity website to raise money for children in poor countries.
Jan's life has been greatly improved by the Internet. "When you go through hard times，you meet others who are facing similar challenges，Jan says. "Thinking about other people's situations inspired me to offer help."
（1）From the passage，we know that Jan Tchamani.
A．learned to find jobs on the Internet
B．started an online company with friends
C．got advice from an online group
D．gave away money to poor children
（2）The main idea of the second paragraph is.
A．the advantages Jan got from the Internet
B．the problems Jan met after getting ill
C．the support Jan gave to people in need
D．the ways Jan learned to make friends online
（3）Jan Tchamani starts the IT club in order to.
A．teach children how to use computers
B．raise money for private teachers
C．help older people be independent
D．make more money for her company
（4）It can be inferred from the passage that.
A．new technology is mentioned in each article
B．Jan is afraid of meeting many difficulties
C．the Internet has only changed Jan's life
D．Jan develops to be a helper through the Internet發(fā)布：2024/12/27 17:30:2組卷：12引用：2難度：0.5 -
2．House fires often happen.So it appears necessary to learn something useful to protect family from them.
Notes：protect保護(hù)；smoke alarm煙霧報(bào)警器：spread 傳播：escape 逃跑Put a smoke alarm in your house and test it every month.Halt of all house fire deaths happen between 11 p.m.jye.ai 7 a.m.The risk of dying in a house fire is cut in half with working smoke alarms. Make sure your hearing aid，smartphone or glasses are next to your bed.Fire can spread through a house soon.You may have as little as two minutes to escape.Be ready to act right away. Come up with a fire plan.77% of families don't have a house fire plan to follow.That's one of the reasons why at least one child dies and 293 children get hurt in a house fire every day. Don't call the Fire Service until you get outside when a house fire happens.And when you get outside，don't go back to the house for any reason until the Fire Service tells you.It is OK to go back.
（1）For what reason can we refer （推斷） that we shouldn't call the Fire Service before setting outside when a house fire happens？
A．You should try to get necessary things like smartphones.
B．The Fire Service may not allow you to go back to the house again.
C．You have little time to escape but calling the Fire Service takes some time.
（2）Which of the followings can help save you from a house fire according to the above information？
①M(fèi)aking and following a plan.
②Putting a smoke alarm in house.
③Stopping the fire from spreading houses.
④Keeping awake （醒著的） between 11 p.m.jye.ai7 a.m.
A．①②
B．①④
C．②③
（3）What can we learn from the above information？
A．A smoke alarm makes the risk of dying in a house fire much smaller.
B．If you can't get outside in 2 minutes during a house fire，you will die.
C．Most children die in a house fire because they don't have a house fire plan.
（4）What's the purpose of the writer.
A．To tell people the danger of house fires.
B．To show people how to avoid （避免） house fires.
C．To teach people to protect themselves from a house fire in a right way.
（5）Where do we most probably see the above information？
A．In a report.
B．On a notice board.
C．In a science magazine.發(fā)布：2024/12/27 17:0:1組卷：5引用：2難度：0.2 -
3．Here are some notes from Tina's family.
（1）Who are the notes to？May 12th
Tina，You always worry about your memory.I've borrowed How to improve Your Memory from the library.The book will show you how to improve it.I hope it is helpful.
JackMay 15th
Tina，Harry Potter is on show at City Cinema these two days.I have two tickets.If you want to see it today，please call me before 4 p.m.
Mary
A．Mary.
B．Jack.
C．Tina.
D．Mr.Smith.
（2）What is How to Improve Your Memory？
A．A movie.
B．A book.
C．A game.
D．A story.
（3）When will Mary probably go to see Harry Potter？
A．May 12th.
B．May 13th.
C．May 15th.
D．May 18th.發(fā)布：2024/12/27 17:30:2組卷：4引用：3難度：0.5
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