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Imagine a perfect day: the weather is good and everything seems fine. When, suddenly, your cell phone loses its signal, the television has no programs, and you can't get online with your computer.

What has happened? These are just the types of problems a solar storm (太阳风暴) might  cause. You may not think of storms as putting our society in danger.  But today, a solar storm is as serious as other bad events, such as earthquakes.

A solar storm is caused by solar flares (太阳耀斑): large explosions near the sun that can give off lots of energy. The strong energy can stop the satellite systems (卫星系统) that operate our computers, telecom networks and so on. These storms can even cause the power to go out for weeks or months.

In the past few months, scientists have recorded some of the strongest sun flares in years. The most recent one happened around Valentine's Day, 2011. It caused radio and satellite signals to go down in some northern cities in China.

"Solar flare activity is going to be much worse than what we've seen in the past. We' re not talking about a few cities losing power. It could be half the country, maybe more," SolarStormWarning. com, a US website about space weather, warned.

                                                                                                                                                                                                                             

Experts say that little can be done to predict (预测) such a storm. Governments around the world are trying to work together before the next storm, although they are not sure when that may happen.

46. Solar storms can cause many problems EXCEPT that_______.

A. TVs cannot be turned on           B. mobile phones have no signals

C. people cannot get online              D. the satellite system will be stopped

47. According to the article, what are solar flares?

A. Natural disasters like earthquakes.         B. Strong solar storms.

C. Large explosions near the sun.       D. A lot of energy around the sun.

 48. The writer wrote the article mainly to_______.

A. introduce to people what solar storms are

B. tell people how to solve the problems caused by solar storms

C. call for scientists to predict when the next storm will happen

D. ask people to work to prevent the solar storms from happening

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  In English-as in any other language -we do not always say what we mean or mean what we say.This is true of some of the things we say every day.For example, “How do you do?” “How are you?” This is what people say on meeting.Sometimes they stop and shake hands.“How are you?” looks like a question.It is written with a question mark(问号)after it.And sometimes “How are you?” is a question.One person may want to know if another is well or ill-how his health is-and so on.

  When these are questions, they are almost always said as if(好像)the person who says them wants an answer.

  But most of the time they are said in a way which does not ask for any answer.When these words are said so, we do not answer “I am tired, ” or “I have a bad cold,” or “I am not well.” We say the same thing back to the other person.“How are you?” or “Hello”.Such words are like a smile or a wave of the hand.

  In the same way, when we meet someone in the morning we may say “Good morning!” The weather may be very bad but we say “Good morning!” and the other person will say “Good morning” back to us.We are not talking about the weather or about how good or bad the morning is.

  Again, when people are parting(分手), they may say “Good morning!” or “Good afternoon!” or “Good evening!” or “Good night!” to one another instead of “Good-bye!” They are not talking about the weather but saying “May all be well with you at this time!”

  You will find few people today who know that “Good -bye!” is a short way of saying “God be with you”.(上帝保佑你).But in past times, when religion(宗教)had more place than it now has in education, a child could be taught this very young as part of his knowledge of English.

(1)

When most of the time someone says “How are you!”, we should answer “________”.

[  ]

A.

I am tired

B.

I have a bad cold

C.

I’m fine

D.

I am not well

(2)

“Good morning!” is used in ________.

[  ]

A.

talking about the weather

B.

how good or bad the weather is

C.

the morning

D.

greeting when people meet in the morning

(3)

We say “Good night!” when ________.

[  ]

A.

we leave at night

B.

we talk about the night

C.

the weather is fine at night

D.

people meet at night

(4)

In the past, people often said ________.

[  ]

A.

Good-bye

B.

Good afternoon

C.

Good night

D.

God be with you

(5)

In the past, when a child was very young, he was taught ________.

[  ]

A.

things about religion

B.

a short way of saying

C.

things about weather

D.

knowledge of English

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