Should we be afraid of sharks? Maybe not. New research into the reasons for shark attacks (攻击) suggests that sharks don’t like the way humans taste! In fact, most people who are attacked by the shark are still alive after receiving only one bite (咬). Why is this?

There are many opinions to explain why sharks sometimes attack people. One opinion is that sharks are just curious (好奇的). We know that sharks are the strongest animals in their environment, so they are not afraid of anything. Naturally, that means they are curious when they meet something unusual. Because they don’t have hands or feet., the only way they can find out an object is to bite it! It is thought that sharks sometimes bite humans for this reason, and then swim away.

Scientists also say that sharks would not waste energy trying to eat a human, as we have a lot of bones (骨头). It is hard for a shark to eat us because sharks don’t have hands, and they can’t pull the meat off our bones. Maybe that’s why they only bite us once. Unluckily, one bite from a large shark is serious enough to hurt people greatly!

Another opinion is that sharks attack humans by mistake. Some sharks may sometimes mistake humans for a seal. An example of this is when a shark attack attacks a surfer. A surfer lying on a surfboard looks like a seal when seen from below. Sharks like seals because they have thick fat.

Whatever the reason for shark attacks on humans, sharks should be afraid of us. Sadly, we kill almost 40 million of them each year.

1.What happens to people attacked by sharks?

A．Most of them because blind.               B．Most of them because of deaf.

C．Most of them died.                      D．Most of them are still alive.

2.How do sharks find out about an unusual object according to the passage?

A．By biting.                              B．By smelling.

C．By touching.                           D．By killing.

3.Which sentence about sharks is true?

A．Sharks pull meat off bones when they eat.

B．Sharks might mistake humans for seals.

C．Sharks like to attack surfers because of their thick fat.

D．One bite from a shark is nothing serious.

4.What would the author write the passage mainly for?

A．To tell surfers to stay away from sharks.

B．To ask people to stop killing sharks.

C．To let us know the reasons for shark attacks on people.

D．To show that humans are much stronger than sharks.

 

What does a UFO look like? Do you believe there are aliens outside the earth? Maybe nobody can tell us exactly, but some of us believe that we humans are not alone in this world. We have friends living outside the earth. And a lot of people in the world think they really have seen a UFO flying in the sky. Now many scientists are trying to understand the origin of the UFO sightings. Scientists even try to draw pictures about aliens and aliens’ life according to their imagination.        
Because we don’t really know about it, we call it UFO or Unidentified Flying Object. Many of us are curious(好奇的) about it and interested in it very much.
While scientists have no same ideas about whether there is an alien or not, it seems that China has been home to some UFO sightings recently.
On August 20^th,2011, a UFO was seen at 21:00 by the pilot on the plane which took off from Pudong International Airport to Changchun. At almost the same time, many astrophiles(天文爱好者)took pictures of it. Later, reports from some cities said that the UFO was seen. The pilot said the UFO was small at first, then expanded(扩大),moved north, and disappeared(消失)several minutes later. However, he couldn’t exactly make sure about what he had seen.
【小题1】What do scientists know about the aliens according to this passage?

A．Scientists know about the aliens’ life well.

B．Some scientists try to imagine aliens’ life.

C．Scientists have the same idea about the UFO.

D．Many scientists have already understood the origin of the UFO sightings.

【小题2】What happened on August 20^th,2011?

A．A UFO took off from Pudong International Airport.

B．A pilot took pictures of the UFO.

C．Many astrophiles saw the UFO.

D．The UFO was small when it moved north.

【小题3】Which of the following sentences is NOT true according to this passage?

A．UFO is short for Unidentified Flying Object.

B．Some people from some cities said that they saw the UFO on August 20th,2011.

C．The pilot could exactly make sure what he had seen.

D．Many of us are interested in the UFO.

What does a UFO look like? Do you believe there are aliens outside the earth? Maybe nobody can tell us exactly, but some of us believe that we humans are not alone in this world. We have friends living outside the earth. And a lot of people in the world think they really have seen a UFO flying in the sky. Now many scientists are trying to understand the origin of the UFO sightings. Scientists even try to draw pictures about aliens and aliens’ life according to their imagination.        
Because we don’t really know about it, we call it UFO or Unidentified Flying Object. Many of us are curious(好奇的) about it and interested in it very much.
While scientists have no same ideas about whether there is an alien or not, it seems that China has been home to some UFO sightings recently.
On August 20^th,2011, a UFO was seen at 21:00 by the pilot on the plane which took off from Pudong International Airport to Changchun. At almost the same time, many astrophiles(天文爱好者)took pictures of it. Later, reports from some cities said that the UFO was seen. The pilot said the UFO was small at first, then expanded(扩大),moved north, and disappeared(消失)several minutes later. However, he couldn’t exactly make sure about what he had seen.
【小题1】What do scientists know about the aliens according to this passage?

A．Scientists know about the aliens’ life well.

B．Some scientists try to imagine aliens’ life.

C．Scientists have the same idea about the UFO.

D．Many scientists have already understood the origin of the UFO sightings.

【小题2】What happened on August 20^th,2011?

A．A UFO took off from Pudong International Airport.

B．A pilot took pictures of the UFO.

C．Many astrophiles saw the UFO.

D．The UFO was small when it moved north.

【小题3】Which of the following sentences is NOT true according to this passage?

A．UFO is short for Unidentified Flying Object.

B．Some people from some cities said that they saw the UFO on August 20th,2011.

C．The pilot could exactly make sure what he had seen.

D．Many of us are interested in the UFO.

You can’t see any object unless light from that object gets into your eyes．Some of the things you see give off light of their own。The sun，the stars，a lighted lamp are the examples that can be seen by their own light．But most of the things you see are not giving off light of their own．They are just reflecting(反射)light that falls on them from the sun or some other luminous bodies．The moon，for example，doesn’t give off any light of its own．It is not 1uminous．You see it because sunlight falls on it and some of the sunlight reflects on the earth．So moonlight is only second—hand sunlight．
When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．
【小题1】You can see the book because________．

A．your eyes are close to it	B．it reflects some of the light
C．it has light of its own	D．it is big enough to be seen

【小题2】The Chinese meaning of the world“luminous”is close to_______．

A．闪光的

B．看不见的

C．发光的

D．明亮的

【小题3】________has light of its own．

A．The moon

B．The earth

C．The sun

D．The satellite of Dong Fong Hong

【小题4】Light travels about_________kilometers per second．

A．300，000

B．100，000

C．400，000

D．190，000

【小题5】Which of the following is TRUE?

A．All the things you can see give off light．

B．Light from the book is much faster than that from the moon．

C．The moment you open your eyes，the light from the book travels to your eyes．

D．Light travels so fast that there is no time for you to read．

缺词填空 先通读下列短文，掌握其大意，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。所填单词在题后横线上必须完整写出（本大题共6分，每格0.5分）
Suppose you are reading a book. Suppose you suddenly close your eyes, can you still see the book? "Of course not." you will say. But can you tell why? You would p__【小题1】 say, "When I close my eyes, my e__【小题2】___ cannot get out of my eyes to get to the book." Many others might give an explanation(解释) very much like the above . But this explanation is w__【小题3】___.
You cannot see any object if light from that object doesn’t get into your eyes. Some of the things you see give off light of their own.
The sun, the star, a lighted lamp are examples that can be seen by their own light. S__【小题4】__ things are luminous(发光的). Most of the things you see are not giving off light of their own. They are simply reflecting(反射) light that falls on them from the sun or some other luminous bodies. The moon, for example, doesn't give off any light of i__【小题5】_ own. It's non-luminous. You see it because sunlight falls on it and some of it reflects in your d__【小题6】__. So moonlight is only second-hand sunlight.
When you look at a book, it sends to your eyes some of the light which falls on it, and you see the book. If light could be kept out from w__【小题7】__ you are, so that there would be no light for the book to reflect, then you could not see the book e__【小题8】__ with your eyes wide open.
Light travels so fast that the time it t___【小题9】__ from the book to your eyes is so s___【小题10】_ as if there was none at all. Light r___【小题11】__ us from the moon, which is about 380,000 kilometers away, in only a little more than a s__【小题12】__.