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.
69. 【小题1】Toothed whales look for food under the sea by ______.

Insomnia is the inability to fall asleep or sleep restfully．It is a problem to nearly everyone at some time ．A person may be awake for an hour in the middle of the night and then , next morning, feel that he hardly sleep all night Normally, worry about not getting enough sleep is the worst aspect of most insomnia．If insomnia is recurrent, however, it is important to find its causes and try to correct them, with the help of a doctor if necessary．
Any of a large number of simple factors may take it difficult for someone to fall asleep or remain asleep．His matters may be too soft or too hard．If there are too many blankets on a hot night, he may be too warm; if the bedclothes are too light he may feel cold during the night．If it is not dark enough, or too noisy, this may cause difficulty in sleeping．Eating shortly before going to bed also be responsible for insomnia．Stimulating drinks, such as tea or coffee, can also keep people awake．
Inability to fall asleep is sometimes a symptom of emotional or mental disorders．Insomnia may also be caused by pain and, very rarely, it can be a symptom of a physical disease．
The cause of insomnia may be easy to correct．The sufferer should check the mattress, bedclothes and bedroom temperature, and make any necessary changes．An eye mask keeps out the night and ear-plugs shut out sound．He should relax for an hour or two before bedtime, perhaps by reading a book; watching TV, or taking a warm bath．If he wakes during the night he should try turning on the light and reading for a while．Taking warm milk and a biscuit or two may be helpful．Above all, he should try not to worry about sleeplessness when someone is tied enough he nearly always falls asleep．
If necessary, a doctor may prescribe tranquillizers or sleeping pills．Take only the dosage he prescribes; any more is dangerous．
67．According to the writer, insomnia is ______．
A．a rare problem                       B．a sign of illness
C．a common complaint                  D．a modern disease
68．Which of the following statements is not the cause of insomnia?
A．too many blankets on a hot night      B．drinking juice
C．emotional or mental disorders         D．physical pain
69．Insomnia needn’t be taken seriously because_______．
A．people can catch on sleep during the day．
B．many people sleep far too much．
C．it can easily be cured by doctors．    
D．it is cured naturally by tiredness．
70．The main cure for insomnia is_____．
A．reading a book at night               
B．having sleeping pills
C．watching television before bedtime     
D．not to get too anxious about sleeping

Beverage Service    We serve a variety of soft drinks, coffee, tea and free of charge. However, as flying has a dehydrating effect, water and non-alcoholic beverages are recommended.

Electronic Equipment    Cellphones, FM/AM radios, portable television sets and electronic toys with remote controls must not be used in the cabin, as their signals may interfere with the aircrafts navigational instruments. Laptop computers and CD (MD, MP3) players may be used during cruising portions of the flight but not during the takeoff and landing.

Inflight Entertainment    A wide selection of international publications are available for your reading pleasure. You may keep this free copy of Morning Calm magazine, but kindly return all other reading materials after you have finished with them for the benefit of fellow passengers. A selection of music is available on eight channels, from channel 3 to 10. The channel changer is on your armrest. We also offer a selection of popular films; you may listen in English on channel 2. Paduk (go) and chess are available on request, and we have free postcards and stationery.

Medical Needs    We keep a selection of nonprescription medicine for any passenger suffering from mild sicknesses. An emergency medical kit is also available for more serious illnesses.

Travelling with Infants and Children    Baby bassinets are provided on a first come first serve basis and should be requested at the time of booking. Special meals for children and infants can be served if the request is made 24 hours before departure. Selected giveaways for children aged 2 to 12 are available on all international flights.

1.The services above are probably offered by ___________.

A．a traveling agent                        B．a medical center

C．an airline                              D．a five-star hotel

2.Which of the following is not allowed according to the passage?

A．Watching popular films.

B．Listening to MP3.

C．Having nonprescription medicine.

D．Using mobile phones.

3.If you turn on channel 5 on your armrest, what will you enjoy?

A．International news.                      B．Free-of-charge drinks.

C．Fashion magazines.                      D．Popular music.

4.When should a passenger request special meals for children and babies?

A．24 hours before departure.               B．At the time of booking.

C．Soon after the takeoff.                    D．At the time of landing.

XUE Bai, a 21-year-old university student, hopes to volunteer for Beijing's 2008 Olympics. "I want to do something for the Olympics. It is also a kind of learning for me," said the fourth-year student at Beijing Foreign Studies University. Now it is time for Xue to act on her plan. The Beijing Organizing Committee for the Games of the 2008 Olympiad  will start to recruit(招募)volunteers on August 28.
The Olympics will need around 70,000 volunteers and the Paralympic Games(残疾人奥运会) will need another 30,000. University students like Xue will make up the majority of the volunteers. But the Olympics also need other volunteers - ordinary citizens and foreigners, for example. Students in Beijing should apply through their universities. Other volunteers may apply online or submit a written application. The online application system and a hotline will be open next Monday. For applicants outside Beijing, the application process begins in December. There is plenty of work for volunteers to do. For example, there will be chances to help publicize the games over the next two years. During the games themselves, volunteers will clean, serve food, marshal(礼仪引导)or offer language help.
The Sydney Olympics in 2000 was the first that placed special emphasis on the role of volunteers. It used more than 45,000 volunteers in different roles. In the 2004 Athens Olympics, around 45,000 volunteers were used. More than 70,000 volunteers will be needed for the Olympic games and Paralympic Games in 2012, the London Olympic Organizing Committee has said.
【小题1】Xue Bai is willing to be a volunteer for the Beijing Olympics for the purpose of_____.

There are many kinds of friends. Some are always   1. you, but don't understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only  2. friends leave footprints (脚印).

I shall always recall (回忆) the autumn and the girl with the 3. .She will always bring back B. Dr. Carrol escaped the death in the end

the friendship between us. I know she will always be my best friend.

It was the golden season. I could see the yellow leaves 4. on the cool 5. .In such a season, I liked walking alone in the leaves, 6. to the sound of them.

Autumn is a 7. season and life is uninteresting. The free days always get me 8. .But one day, the sound of a violin 9. into my ears like a stream (小溪) flowing in the mountains. I was so surprised that I jumped to see what it was. A young girl, standing in the wind, was 10. in playing her violin.

I had 11. seen her before. The music was so nice that I listened quietly. Lost in the music, I didn't know that I had been 12. there for so long but my existence (存在) did not seem to disturb her.

Leaves were still falling. Every day she played the violin in the corner of the building 13.I went downstairs to watch her performance. I was the only listener. The autumn seemed no longer lonely and life became  14. .  15. we didn't know each other, I thought we were already good friends. I believe she also loved me.

Autumn was nearly over. One day, when I was listening carefully, the sound suddenly  16. . To my astonishment (惊讶), the girl came over to me.

“You must like violin.” she said.

“Yes. And you play very well. Why did you stop?” I asked.

Suddenly, a 17. expression appeared on her face and I could feel something unusual.

“I came here to see my grandmother, but now I must leave. I once played very badly. It was your listening every day that 18. me.” she said.

“In fact, it was your playing 19. gave me a meaningful autumn,” I answered, “Let's be friends.”

The girl smiled, and so did I.

I never heard her play again in my life. I no longer went downstairs to listen like before. Only thick leaves were left behind. But I will always remember the fine figure (身影) of the girl. She is like a 20. —so short, so bright, like a shooting star giving off so much light that it makes the autumn beautiful.

21.               A．with           B．for            C．against    D．to

22.               A．good           B．true           C．new  D．old

23.               A．sound          B．song           C．play D．violin

24.               A．shaking         B．hanging        C．falling D．floating

25.               A．wind           B．snow           C．air   D．rain

26.               A．watching        B．listening        C．seeing    D．hearing

27.               A．lively          B．lovely          C．harvest    D．lonely

28.               A．up            B．off            C．down     D．over

29.               A．flowed         B．grew           C．entered   D．ran

30.               A．lost            B．active          C．busy D．interested

31.               A．once           B．never          C．often D．usually

32.               A．waiting         B．stopping        C．standing   D．hearing

33.               A．because        B．so             C．when     D．but

34.               A．interesting      B．moving         C．encouraging    D．exciting

35.               A．But            B．However       C．Even D．Though

36.               A．stopped        B．began          C．gone D．changed

37.               A．happy          B．sad            C．strange    D．surprised

38.               A．surprised       B．excited         C．encouraged    D．interested

39.               A．that           B．which          C．it    D．who

40.               A．song           B．dream          C．fire   D．sister