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Unless we spend money spotting and preventing asteroids(小行星) now, one might crash into Early and destroy life as we know it, say some scientists.
Asteroids are bigger versions of the meteoroids(流星) that race across the night sky. Most orbit the sun far from Earth and don’t threaten us. But there are also thousands of asteroids whose orbits put them on a collision course with Earth.
Buy $50 million worth of new telescopes right now. Then spend $10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we’ll have a way to change its course.
Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn’t be cheap. Is is worth it? Two things experts consider when judging any risk are: (1)How likely the event is; and (2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500 000 years. Sounds pretty rare-but if one did fall, it would be the end of the world. “If we don’t take care of these asteroids, they’ll take care of us,”says one scientist. “It’s that simple.”
The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? “The world has less to fear from doomsday(世界末日) rocks than from a great nuclear fleet set against it,” said a New York Times article.
9.What does the passage say about asteroids and meteoroids?
A.They are heavenly bodies different in composition.
B.They are heavenly bodies similar in nature.
C.There are more asteroids than meteoroids.
D.Asteroids are more mysterious than meteoroids.
10.What do scientists say about the collision of an asteroid with Earth?
A.It is very unlikely but the danger exists.
B.Such a collision might occur once every 25 years.
C.Coilisions of smaller asteroids with Earth occur more often than expected.
D.lt’s still too early to say whether such a collision might occur.
11.What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?
A.It sounds practical but it may not solve the problem.
B.It may create more problems than it might slove.
C.It is a waste of money because a collision of asteroids with Earth is very unlikely.
D.Further research should be done before it is proved applicable.
12.We can conclude from the passage that .
A.while pushing asteroids off course nuclear weapons would destroy the world
B.asteroids racing across the night sky are likely to hit Earth in the near future
C.the worry about asteroids can be left to future generations since it is unlike to happen in our lifetime.
D.workable solutions still have to be found to prevent a collision of asteroids with Earth
查看习题详情和答案>>Unless we spend money to spot and prevent asteroids now，one might crash into Earth and destroy life as we know it，say some scientists.
Asteroids are bigger versions of the meteoroids(流星)that race across the night sky. Most orbit the sun far from Earth and don't threaten us. But there are also thousands whose orbits put them on a collision course with Earth.
Buy $ 50 million worth of new telescopes right now. Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one，the scientists say，we'll have a way 
to change its course.
Some scientists favor pushing asteroids off course with nuclear weapo
ns. But the cost wouldn't be cheap. I
s it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. Sounds pretty rare-but if one did fall，it would be the end of the world. “If we don't take care of these big asteroids，they'll take care of us,” says one scientist. “It's that simple.”
The cure，though，might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? “The world has less to fear from doomsday(毁灭性的) rocks than from a great nuclear fleet set against them，” said a New York Times article.
【小题1】What does the passage say about asteroids and meteoroids?
| A．They are heavenly bodies different in composition. |
| B．They are heavenly bodies similar in nature. |
C．There are more asteroids th an meteoroids. |
| D．Asteroids are more mysterious than meteoroids. |
| A．It is very unlikely but the danger exists. |
| B．Such a collision might occur once every 25 years. |
| C．Collisions of smaller asteroids with Earth occur more often than expected. |
| D．It's still too early to say whether such a collision might occur. |
| A．It sounds practical but it may not solve the problem. |
| B．It may create more problems than it might solve. |
| C．It is a waste of money because a collision of asteroids with Earth is very unlikely. |
| D．Further research should be done before it is proved applicable. |
| A．while pushing asteroids off course nuclear weapons would destroy the world |
| B．asteroids racing across the night sky are likely to hit Earth in the near future |
| C．the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime |
| D．workable solutions still have to be found to prevent a collision of asteroids with Earth. |
| A．Optimistic. | B．Critical. | C．Objective. | D．Subjective. |
As a saying goes, when life gives you lemons, then make lemonade. But how is delicious lemonade made from sour lemons?
Singer-actor Yu Haoming knows how. He’s 36__ difficulties by returning to the stage. After a 37___ left him scarred, the 25-year-old man 38___ for the first time on Hunan TV’s New Year Concert on Dec. 31, 2012.
His comeback captured (吸引) audiences’ 39___. They went to his Weibo page and left messages such as, “You’ve taught me what toughness means.” and “I’m 40___ of your courage. You moved me to tears by taking off your mask and 41___ onward in confidence. ”
Only Yu himself knew how 42 __it was to stand on his feet again after disaster 43 __When his career as a handsome Super Boy singer and 44 actor took off, Yu got seriously burnt. He was hurt in 2010 when an explosive scene in the TV drama I Have a Date With Spring went wrong 45__ His wounds became worse because of delayed 46___ .
The bums were far more than just wounds and pain for Yu. “You can’t 47___ what kind of sufferings he’s been through and how hard he’s been working to get well，” said his father on the singer’s blog.
His recovery has been long and difficult. Some people might have 48 __during such a process, but Yu has 49 _ not to. He says he still has his dreams.
__ 50 medicine, checkups and therapy (治疗）exercises, he plays the piano a bit every day, reads books about acting and learns English.
The idiom, “ 51__ bitten, twice shy”，doesn’t really apply to him. In August he restarted to film his 52__ in the drama，although he admitted that fears still haunted (萦绕) him sometimes.
“Why should I let the experience stop me going after my 53___ ?” he told the Southern Metropolis Entertainment Weekly in early December.
How did Yu make lemonade? “Life gave me the 54___ gift, and I’ve just got to get on with it and turn difficulties into 55 , ’’ he told the magazine.
1. A．won B．overcome C．realized D．left
2. A．mistake B．blow C．fire D．scene
3. A．sang B．showed C．practiced D．tried
4. A．praises B．thoughts C．messages D．hearts
5. A．aware B．afraid C．proud D．short
6. A．walking B．marching C．living D．touring
7. A．terrible B．strong C．harmful D．hard
8. A．beat B．crashed C．struggled D．struck
9. A．promising B．confident C．simple D．reliable
10. A．unexpectedly B．fiercely C．completely D．surprisingly
11. A．protection B．examination C．treatment D．performance
12. A．feel B．imagine C．understand D．believe
13. A．broken down B．given away C．pulled through D．died away
14. A．hoped B．managed C．intended D．decided
15. A．Instead of B．Except for C．Apart from D．Regardless of
16. A．Unless B．Until C．While D．Once
17. A．part B．appearance C．play D．talent
18. A．happiness B．careers C．dreams D．success
19. A．meaningful B．unusual C．valuable D．rewarding
20. A．abilities B．realities C．actions D．opportunities
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A little girl lived in a simple and poor house on a hill.Usually she 36 play in the small garden.She could see over the garden fence and across the valley a wonderful house with shining golden windows high on another hill.37 she loved her parents and her family, she desired to live in such a house and 38 all day about how wonderful and exciting 39 must feel to live there.
At the age when she gained some 40 skill and sensibility(识别力), she 41 her mother for a bike ride 42 the garden. Her mother finally allowed her to go, 43 her keeping close to the house and not 44 too far. The day was beautifu. The girl knew 45 where she was heading! 46 the hill and across the valley, she rode to the 47 of the golden house.
48 she got off her bike and put it against the gate post, she focused on the path 49 to the house and then on the house itself. She was very disappointed when she 50 that all the windows were 51 and rather dirty.
So 52 and heart-broken, she didn’t go any further. She 53, and all of a sudden she saw an amazing 54. There on the other side of the valley was a little house and its windows were golden. Looking at her little home, she 55 that she had been living n her golden house filled with love and care.Everything she dreamed was right there in front of her nose.
1. A．might B．should C．would D．must
2. A．Unless B．Although C．Since D．But
3. A．dreamed B．worried C．asked D．shouted
4. A．this B．that C．it D．which
5. A．different B．scientific C．musical D．basic
6. A．begged B．blamed C．invited D．paid
7. A．inside B．outside C．through D．along
8. A．insisting on B．relying on C．arguing about D．wondering about
9. A．travelling B．running C．riding D．walking
10. A．madly B．rapidly C．exactly D．possibly
11. A．Over B．Down C．Around D．Beside
12. A．windows B．steps C．center D．gate
13. A．Until B．As C．While D．Because
14. A．getting B．introducing C．leading D．moving
15. A．felt B．learned C．concluded D．found
16. A．transparent B．bright C．plain D．wide
17. A．anxious B．angry C．serious D．sad
18. A．turned around B．cheered up C．settled down D．dropped in
19. A．hill B．valley C．background D．sight
20. A．imagined B．decided C．realized D．guessed
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A Leap（跳跃）to Honor
Leaping on a narrow balance beam（平衡木） is not easy. But Lola Walter, a 13-year-old gymnast, is an expert at it.
To perfect her skills, Lola 36 for four hours a day, five days a week. At the state championships in March, she finished seventh out of 16 girls.
That’s especially impressive, 37 she is legally blind, born with a rare condition that causes her eyes to shift constantly. She often sees double and can’t _38 how far away things are.
When she was little, her mom 39 that even though she couldn’t see 40 , she was fearless. So her mom signed her up for gymnastics when she was three. She loved the 41 right away and gymnastics became her favorite.
Though learning gymnastics has been more 42 for her than for some of her tournaments, she has never quit. She doesn’t let her _43 stop her from doing anything that she wants to.
She likes the determination it takes to do the sport. Her biggest 44_ is the balance beam. Because she has double vision, she often sees two beams. She must use her sense of touch to help her during her routine. Sometimes she even closes her eyes. “You have to 45_ your mind that it’ll take you where you want to go,” says Lola.
To be a top-level gymnast, one must be brave. The beam is probably the most 46 for anyone because it’s four inches wide. At the state competition, Lola didn’t fall 47 the beam. In fact, she got an 8.1 out of 10---- her highest score yet.
Lola doesn’t want to be 48 differently from the other girls on her team. At the competitions, the judges don’t know about her vision _49 _. She doesn’t tell them, because she doesn’t think they need to know. Her mom is amazed by her _50 attitude.
Lola never thinks about 51__. She is presently at level 7 while the highest is level 10 in gymnastics. Her 52 is to reach level 9. She says she wants to be a gymnastics coach to pass down what she’s learned to other kids 53 she grew up.
Lola is 54 of all her hard work and success. She says it’s helped her overcome problems in her life outside gymnastics, too. Her 55 for others is “just believe yourself”.
1. A．runs B．teaches C．trains D．dances
2. A．since B．unless C．after D．though
3. A．tell B．guess C．assume D．predict
4. A．suspected B．remembered C．imagined D．noticed
5. A．deeply B．well C．ahead D．closely
6. A．task B．sport C．event D．show
7. A．boring B．enjoyable C．difficult D．unsatisfactory
8. A．talent B．quality C．nature D．condition
9. A．doubt B．advantage C．challenge D．program
10. A．examine B．express C．open D．trust
11. A．fearful B．harmful C．unfair D．inconvenient
12. A．to B．on C．off D．against
13. A．greeted B．treated C．served D．paid
14. A．pains B．stresses C．injuries D．problems
15. A．positive B．friendly C．flexible D．caution
16. A．defending B．quitting C．winning D．bargaining
17. A．standard B．range C．view D．goal
18. A．until B．as C．when D．before
19. A．proud B．tired C．ashamed D．confident
20. A．plan B．advice C．reward D．Responsibility
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