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

A punctual person is in the habit of doing a thing at the proper time and is never late in keeping an appointment.

The unpunctual man, on the other hand, never does what he has to do at the proper time. He is always in a hurry and in the end loses both time and his good name. A lost thing may be found again, but lost time can never be regained. Time is more valuable than material things. In fact, time is life itself. The unpunctual man is forever wasting and mismanaging his most valuable asset(财产)as well as others’. The unpunctual person is always complaining that he finds no time to answer letters, or return calls or keep appointments promptly. But the man who really has a great deal to do is very careful of his time and seldom complains of want of it. He knows that he cannot get through his huge amount of work unless he faithfully keeps every piece of work when it has to be attended to.

Failure to be punctual in keeping one’s appointments is a sign of disrespect towards others. If a person is invited to dinner and arrives later than the appointed time, he keeps all the other guests waiting for him. Usually this will be regarded as a great disrespect to the host and all other guests present.

Unpunctuality, moreover, is very harmful when it comes to do one’s duty, whether public or private. Imagine how it would be if those who are put in charge of important tasks failed to be at their proper places at the appointed time. A man who is known to be habitually unpunctual is never trusted by his friends or fellow men.

According to the passage, the main reason that a person is always unpunctual is that____.

A. he has more work to do than other people

B. he is always in a hurry when he works

C. he doesn’t care much about time

D. he always mismanages and wastes his time

What does the underlined word mean?

A. in time     B. be late    C. on time    D. at times

According to the third paragraph, when you are invited to dinner, you should arrive

There ____.

A. after other guests have arrived     B. at the appointed time

C. before all other guests           D. after the host has got things ready

Which of the following statements best describes the harm of unpunctuality?

A. If you are an unpunctual person, you cannot be in charge of any important task.

B. Unpunctuality may bring about heavy losses for both public and private affairs

C. If your friends know that you are unpunctual, they may not see you again.

 D. Unpunctuality may make you miss a lot of appointments and lose friends.

A punctual person is in the habit of doing a thing at the proper time and is never late in keeping an appointment.

The unpunctual man, on the other hand, never does what he has to do at the proper time. He is always in a hurry and in the end loses both time and his good name. A lost thing may be found again, but lost time can never be regained. Time is more valuable than material things. In fact, time is life itself. The unpunctual man is forever wasting and mismanaging his most valuable asset(财产)as well as others’. The unpunctual person is always complaining that he finds no time to answer letters, or return calls or keep appointments promptly. But the man who really has a great deal to do is very careful of his time and seldom complains of want of it. He knows that he cannot get through his huge amount of work unless he faithfully keeps every piece of work when it has to be attended to.

Failure to be punctual in keeping one’s appointments is a sign of disrespect towards others. If a person is invited to dinner and arrives later than the appointed time, he keeps all the other guests waiting for him. Usually this will be regarded as a great disrespect to the host and all other guests present.

Unpunctuality, moreover, is very harmful when it comes to do one’s duty, whether public or private. Imagine how it would be if those who are put in charge of important tasks failed to be at their proper places at the appointed time. A man who is known to be habitually unpunctual is never trusted by his friends or fellow men.

According to the passage, the main reason that a person is always unpunctual is that____.

A. he has more work to do than other people

B. he is always in a hurry when he works

C. he doesn’t care much about time

D. he always mismanages and wastes his time

What does the underlined word mean?

A. in time     B. be late    C. on time    D. at times

According to the third paragraph, when you are invited to dinner, you should arrive

There ____.

A. after other guests have arrived     B. at the appointed time

C. before all other guests           D. after the host has got things ready

Which of the following statements best describes the harm of unpunctuality?

A. If you are an unpunctual person, you cannot be in charge of any important task.

B. Unpunctuality may bring about heavy losses for both public and private affairs

C. If your friends know that you are unpunctual, they may not see you again.

 D. Unpunctuality may make you miss a lot of appointments and lose friends.

A. Arguments are pointless.
B. Your parents only want what's best for you.
C. Everyone's opinion matters only as much as you want them to.
D. You learn by doing.
E. Your emotions are under your control.
F. You aren't stuck in any situation
Life is the greatest teacher
There always comes a moment when I wonder where I will end up and this moment always serves as a strong motivation for me to learn life lesson. I've learned a great many things, but these are the lessons that I wish I'd learned earlier:
【小题1】_________
There was a time when everyone's opinion was mine as well. Whatever preferences I formerly held were dashed in the face of another's. This most likely came from a need to please others. Remember that your opinion matters just as much as the next guy's, whether they make more money than you or are less popular than you. Everyone's opinion holds the same weight.
【小题2】_________
Drama, chaos, and emotional unrest — these were what took up most of my time as a teenager. If I had heard someone said bad things behind my back, I'd be angry. Go crazy. Looking back on those tantrums now, I'm not too surprised. After all, when you have little self control, anything is possible. The lesson here is, remain aware of how you react.
【小题3】_________
Will one small argument among friends decide the fate of the entire universe? In my world it felt like it. I just wanted so much to be right and for them so much to be wrong. But in the end, it only resulted in me wasting my time and in the other person storming off in frustration. Is there really a point to arguing? Unless it's absolutely necessary, I've learned that it's better to hold your breath on things you can't control at all. Arguing to change someone's mind is one of them.
【小题4】_________
I'm not saying every parent wants what's best for you (there are outliers), but in general, parents do what they do for you in your best interest. My parents used to make me do the dishes, cook dinner, sweep the floors, mow the lawn, take out the garbage… the list goes on and on. And at every turn, I'd whine and complain. I'd eventually end up doing it. Now, I honestly see the value in having learned those skills. I can efficiently cook and clean up after myself.
【小题5】_________
Whenever I’d lose a friend, get an awful grade, or disappoint my parents, I stewed in my own muck. Waiting for the bad moments to go away seemed to be the only solution. Fortunately, I know now that you don’t have to be stuck in bad situations. You can go out and create better ones. It all depends on perspective; on how you see the situation. Viewing everything as a learning experience makes life more pleasurable, even during the hard times. You aren't stuck. You can move on.
I'm glad to have learned these lessons the way I did. Each experience helped shape me to become a better person. I don't know if any young people are reading this, but if they are, I'd like to say this: “Listen to life and its experiences. Everyone goes through mostly the same things.”

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 weapons. But the cost wouldn't be cheap. Is 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 than meteoroids.

D．Asteroids are more mysterious than meteoroids.