It is reported that conservation groups in North America have been arguing about the benefits and dangers of wolves. Some groups believe wolves should be killed. Other people believe wolves

Must be protected so that they will not disappear from the wilderndss(荒野)

                            For Killing Wolves

  In Alaska，the wolf almost disappeared a few years ago，because hunters were killing hundreds

0f them forsport .However．1aws were established to protect the wolves from sportsmen and people who catch the animals for their fur．So the woIf population has greatly increased. Now there are so many wolves that they are destroying their own food supply．

    A wolf naturally eats animals in the deer family. People in the wilderness also hunt deer for

food．Many of the animals have been destroyed by the very cold winters recently and by changes in the wilderness plant life．When the deer can’t find enough food，they die．

   If the wolves continue to kill large numbers of deer，their prey(猎物)will disappear some

day．And the wolves will．too．So we must change the cycle of life in the wilderness to balance the

ecology．If we killed more wolves，we would save them and their prey from dying out．We’d also

save some farm animals．

    In another northern state，wolves attack cows and chickens for food．Farmers want the

government to send biologists to study the problem．They believe it necessary to kill wolves in some areas and to protect them in places where there is a small woIf population．

                           Against Killing Wolves

  If you had lived long ago，you would have heard many different stories about the dangerous

wolf．According to most stories，hungry wolves often kill people for food．Even today，the stories of the“big bad woIf'＂will not disappear．

    But the fact is wolves are afraid of people．and they seldom travel in areas where there is a

human smell．When wolves eat other animals，they usually kill the very young．or the sick and

injured .The strongest survive .No kind of animal would have survived through the centuries if the

weak members had lived．And has always been a law of nature

  Although some people say it is good sense to kill wolves，we say it is nonsense!Researchers

have found wolves and their prey living in balance．The wolves keep the deer population from

becoming too large,and that keeps a balance in the wilderness plant life．

    The real problem is that the areas where wolves can live are being used bv people．Even if

wilderness land is not used directly for human needs．the wolves can’t always find enough food .So they travel to the nearest source,which is often a farm．Then there is danger．The“big bad wolf”has arrived! And everyone knows what happens next．

1．According to the passage，some people in North America favor killing wolves for all the following reasons EXCET that_____________．

    A．there are too many wolves                  B．they kill large numbers deer

    C．they attack cows and chickens for food        D．they destroy the wilderness plant life

2．Some people are against killing wolves because____________．

    A．wolves help to keep the ecological balance in the wildemess

    B．there is too small a wolf population in the wilderness

    C．there are too many deer in the wilderness

    D．wolves are afraid of people and never attack people

3．According to those against killing wolves，when wolves eat other animals，____________．

A．they never eat strong and healthy ones

    B．they always go against the law of nature

    C．they might help this kind of animals survive in nature

    D．they disturb the ecological balance in the wilderness

4．The last sentence“And everyone knows what happens next”implies that in such cases____________．

    A．farm animals will be in danger and have to be shipped away

    B．woIves will kill people and people will in turn kill them

    C．wolves wilI find enough food sources on famls

    D．people will leave the areas where wolves can live

Ears are for hearing — everyone knows that. But for a creature called the Cuvier’s beaked whale, hearing starts in the throat (喉咙), a new study found.
The observation might help explain how all whales hear. The work might also help scientists understand how animals are affected by underwater sonar (声呐). This sonar, used by some ships, sends out sound waves to locate underwater objects.
The Cuvier’s beaked whale is a so-called toothed whale. Toothed whales dive deep into the ocean in search of food. As the whales hunt, they produce sounds that reach objects and then return to the whales. This allows the animals to “see” the shape, size, and location of objects, even when they’re 1,000 meters under the sea, where it is totally dark.
To better understand how the whale hears, researchers from San Diego State University in California took X rays of two Cuvier’s beaked whales. The whales had died and washed up on the beach.
Ted Cranford and his colleagues used the images to make a computer model of a Cuvier’s beaked whale’s head. Then, they modeled the process of sound traveling through the head.
The researchers knew that some sounds get to the ears of a toothed whale through a structure (构造) called “the window for sound”. Found on the lower jaw, this structure is very thin on the outside and has a large pad (垫) of fat on the inside.
When the researchers used their computer model to work out how sound waves travel in the whale’s head, they were surprised to find that sounds coming from right in front of the whale actually travel under the animal’s jaw. From there, sound waves move through the throat, into a hole in the back of the jaw, and finally to the pad of fat near the animal’s ears.
【小题1】
Toothed whales look for food under the sea by ______.

My love affair with the sea began when I was no more than six years old, walking along the sandy beaches. I always wanted to make the first set of footprints in the wet sand.
Unlike many surfers who sought the perfect wave, my interests always lay beneath the sea’s surface in a world I could only imagine and dream of. Soon, wearing a snorkel and a mask, I made my first solo adventures in the deep.
Perhaps the greatest turning point in my life came when I was in high school and I wrote a letter to the famous Scripps Oceanographic Institution, in San Diego, asking how I might learn more about the sea.
A kind scientist answered my letter and told me how to apply to Scripps for a summer scholarship, which I received. During one of their cruises that summer, I met Dr. Robert Norris, a marine geologist. He loved the sea almost as much as I did. Soon he was asking me what my plans were and where I expected to attend college. I told him I didn’t know, so he suggested I consider his school, the University of California in Santa Barbara.
Now my love affair with the sea became a serious endeavor. If I wanted to be an undersea explorer, I needed to learn as much as I could about the laws of the physical world that controlled the environment I wanted to enter. The undersea world is not our natural world. It is unforgiving to those who make mistakes. At its greatest depths the water temperature is near freezing, the pressure is eight tons per square inch, and it is totally dark. It is easy to get lost in such a world. I needed to learn a lot about geography, navigation, meteorology, geology, biology, and many other things. While I was in school, I took a little of everything.
I decided another important thing for me to do was to join the U.S. Navy. If I was going to be an undersea explorer, I would have to lead men and women on dangerous adventures where they might get hurt, and I didn’t want that to happen. In the Navy I learned discipline, organization, and how to motivate and lead people on expeditions so that we could explore the wonders of the deep.
Finally, the time came to put all that I had learned to use, to go forth with a team of men and women and explore an adventure I am still on and hope to be on for many years to come.
【小题1】In Paragraph 5, the writer discusses “the laws of the physical world.”Which of the following is an example of one of the laws?

It is reported that conservation groups in North America have been arguing about the benefits and dangers of wolves. Some groups believe wolves should be killed. Other people believe wolves
Must be protected so that they will not disappear from the wilderndss(荒野)
For Killing Wolves
In Alaska，the wolf almost disappeared a few years ago，because hunters were killing hundreds
0f them forsport .However．1aws were established to protect the wolves from sportsmen and people who catch the animals for their fur．So the woIf population has greatly increased. Now there are so many wolves that they are destroying their own food supply．
A wolf naturally eats animals in the deer family. People in the wilderness also hunt deer for
food．Many of the animals have been destroyed by the very cold winters recently and by changes in the wilderness plant life．When the deer can’t find enough food，they die．
If the wolves continue to kill large numbers of deer，their prey(猎物)will disappear some
day．And the wolves will．too．So we must change the cycle of life in the wilderness to balance the
ecology．If we killed more wolves，we would save them and their prey from dying out．We’d also
save some farm animals．
In another northern state，wolves attack cows and chickens for food．Farmers want the
government to send biologists to study the problem．They believe it necessary to kill wolves in some areas and to protect them in places where there is a small woIf population．
Against Killing Wolves
If you had lived long ago，you would have heard many different stories about the dangerous
wolf．According to most stories，hungry wolves often kill people for food．Even today，the stories of the“big bad woIf'＂will not disappear．
But the fact is wolves are afraid of people．and they seldom travel in areas where there is a
human smell．When wolves eat other animals，they usually kill the very young．or the sick and
injured .The strongest survive .No kind of animal would have survived through the centuries if the
weak members had lived．And has always been a law of nature
Although some people say it is good sense to kill wolves，we say it is nonsense!Researchers
have found wolves and their prey living in balance．The wolves keep the deer population from
becoming too large,and that keeps a balance in the wilderness plant life．
The real problem is that the areas where wolves can live are being used bv people．Even if
wilderness land is not used directly for human needs．the wolves can’t always find enough food .So they travel to the nearest source,which is often a farm．Then there is danger．The“big bad wolf”has arrived! And everyone knows what happens next．
1．According to the passage，some people in North America favor killing wolves for all the following reasons EXCET that_____________．
A．there are too many wolves                  B．they kill large numbers deer
C．they attack cows and chickens for food        D．they destroy the wilderness plant life
2．Some people are against killing wolves because____________．
A．wolves help to keep the ecological balance in the wildemess
B．there is too small a wolf population in the wilderness
C．there are too many deer in the wilderness
D．wolves are afraid of people and never attack people
3．According to those against killing wolves，when wolves eat other animals，____________．
A．they never eat strong and healthy ones
B．they always go against the law of nature
C．they might help this kind of animals survive in nature
D．they disturb the ecological balance in the wilderness
4．The last sentence“And everyone knows what happens next”implies that in such cases____________．
A．farm animals will be in danger and have to be shipped away
B．woIves will kill people and people will in turn kill them
C．wolves wilI find enough food sources on famls
D．people will leave the areas where wolves can live

Ears are for hearing — everyone knows that. But for a creature called the Cuvier’s beaked whale, hearing starts in the throat (喉咙), a new study found.

    The observation might help explain how all whales hear. The work might also help scientists understand how animals are affected by underwater sonar (声呐). This sonar, used by some ships, sends out sound waves to locate underwater objects.

    The Cuvier’s beaked whale is a so-called toothed whale. Toothed whales dive deep into the ocean in search of food. As the whales hunt, they produce sounds that reach objects and then return to the whales. This allows the animals to “see” the shape, size, and location of objects, even when they’re 1,000 meters under the sea, where it is totally dark.

    To better understand how the whale hears, researchers from San Diego State University in California took X rays of two Cuvier’s beaked whales. The whales had died and washed up on the beach.

    Ted Cranford and his colleagues used the images to make a computer model of a Cuvier’s beaked whale’s head. Then, they modeled the process of sound traveling through the head.

    The researchers knew that some sounds get to the ears of a toothed whale through a structure (构造) called “the window for sound”. Found on the lower jaw, this structure is very thin on the outside and has a large pad (垫) of fat on the inside.

    When the researchers used their computer model to work out how sound waves travel in the whale’s head, they were surprised to find that sounds coming from right in front of the whale actually travel under the animal’s jaw. From there, sound waves move through the throat, into a hole in the back of the jaw, and finally to the pad of fat near the animal’s ears.

1.

Toothed whales look for food under the sea by ______.

  A. watching the shape and size of their objects       B. diving deep into the sea

  C. sending and receiving sounds                   D. making lots of noises     

2.

    Researchers took X rays of two Cuvier’s beaked whales in order to ______.

  A. find out why they had died and washed up on the beach

  B. make a computer model of a Cuvier’s beaked whale’s head

  C. make sure that sound travels through the head

  D. know more about the way the whale hears   

3.

Which of the following describes the way taken by sound waves through a Cuvier’s beaked whale?

  A. A hole in the back of the jaw → the ears → the jaw → the throat.   

  B.    The jaw → the throat → a hole in the back of the jaw → the ears.

  C.    The throat → the jaw → the ears → a hole in the back of the jaw.   

  D. The ears → the throat → a hole in the back of the jaw → the jaw.

4.

 Which of the following is TRUE according to this passage?

  A. The throat is important to the Cuvier’s beaked whale’s hearing.

  B. Ships send out sound waves like a Cuvier’s beaked whale.

  C. The ears are actually useless to the Cuvier’s beaked whale.

  D. The researchers haven’t found how the whales hear.