We all need to quiet down!"The rising noise pollution in cities will become a top environmental threat，"the United Nations（UN）said in a report on Feb.17.It asks governments to take action as soon as possible.
What is noise pollution？
According to the UN，unwanted noise above 65 decibels（dB，分貝）is noise pollution.Noise becomes harmful when it's over 75 dB and is painful above 120 dB.People who live near airports or highways get lots of noise pollution.When neighbors remodel（裝修）their homes or stomp（跺腳）around above you，that's also noise pollution.
Why is noise pollution bad？
"High levels of noise do harm to human health，"the UN report says.According to Science magazine，too much noise causes health problems like stress and tiredness from poor sleep.More serious problems include heart disease and hearing loss.In Europe，12，000 people die each year from effects of noise pollution，according to CGTN.
How can we fix the problem？
The European Commission says cities can fight noise pollution.One great way is to build barriers along railroads and highways.Some European countries have also built roads of rubber.It's the same rubber as your school's running track.It makes cars quieter.How can you and I help？We can stop stomping around our houses!
（1）The UN report wants countries around the world to BB.
A.keep quiet about pollution
B.deal with noise pollution
C.stop cities from growing
D.protect the natural environment
（2）According to the UN，noise pollution takes place when AA .
A.sounds are unwanted and louder than 65 decibels
B.sounds around you are over 120 decibels
C.neighbors walk around you
D.people talk at an airport
（3）How might noise pollution affect us？ DD
a.We might feel tired.
b.We might have heart disease.
c.We might sleep more than usual.
d.We might have hearing problems.
A.a bc
B.a cd
C.bcd
D.a bd
（4）What does the underlined word"fix"mean？ BB
A.Study.
B.Solve.
C.Watch.
D.Repair.
（5）According to the last paragraph，what can students do to fight noise pollution？ DD
A.Build barriers along railroads.
B.Build roads made of rubber.
C.Keep quiet while taking cars.
D.Make less noise for their neighbors.
【答案】B；A；D；B；D
【解答】
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1．Passage A
Many of us have read stories or seen films about space-creatures.They come to Earth in spaceships that look like flying saucer（飛碟）.These space-creatures do not look like human beings at all，but they are usually very intelligent（聰明）.In one film，they were tiny little men with large heads.When they landed on Earth，they knew exactly what to do.They went straight to the President's palace and made him their prisoner！
The stories about space-creatures are，of course，not true.Space-Creatures exist only in story-books and in films，just like giants（巨人） and fairies.
But many scientists are asking this question.Is there life on other planets？There are millions of planets in the Universe，and Earth is just one of them.Human beings have lived on Earth for thousands of years.Could there be living things on other planets too？Many people believe that the other planets in the Universe are not suitable for living things.They are either too hot or too cold.Some of them have poisonous gases on them that will kill any living thing.
Are scientists sure that there is no life on other planets？
At this stage（階段） we still cannot be sure.All the planets，except the Moon and Mars，are so far away that it will take hundreds of years for spaceships to reach them！
（1）The best title for this passage is "".
A.Scientific Wonders：Space-creatures
B.Is There Life on Other Planets
C.Are Scientists Sure
D.Stories about Space-creatures
（2）It is impossible for scientists to know about other planets in the Universe because.
A.all the planets，except the Moon，are so far away that it will take hundreds of years for our spaceships to reach them
B.all the planets are too far to reach
C.all the planets，except the Moon and Mars，are so far away that it will take hundreds of years for our spaceships to reach them.
D.All the planets are only too far to reach
（3）Which of the following statements is not true according to the passage？
A.The stories about space-creatures are true.
B.Space-creatures are in stories.
C.Space-creatures are in films.
D.Many scientists are asking if there is life on other planets.
（4）Which of the following statements is true according to the passage？
A.All the planets are either too hot or too cold.
B.Space-creatures are only in story –books and in films.
C.People love giants because they are true
D.Children love fairies because they are true.
（5）In the passage "straight" means.
A.upright
B.level
C.directly
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2．We each have a memory.That's （1）
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3．When our self-confidence is low，we sometimes tend to believe what others think of us.We do not have the confidence in ourselves（1）
we have to believe in others.A man who has（2）to accept others' beliefs is Les Brown.
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Today he is a very（13）professional speaker and author.He is a（n） （14）of someone who has overcome other people's beliefs.In his videos and tapes，he（15）confidence.He told his story and（16）he overcame the challenges in his life.Listening to him speak，and listening to his laugh，which is （17）infectious （感染性的），we can see that he is very motivating and inspiring.
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