Why did humans evolve to walk upright? Perhaps because it’s just plain easier. Make that “energetically less costly”, scientifically speaking.

Bipedalism—walking on two feet, is one of the defining characteristics of being humans, and scientists have debated for years how it came about. In the latest attempt to find an explanation, researchers trained five chimps(黑猩猩)to walk on a treadmill(跑步机)while wearing masks that allowed measurement of their oxygen consumption. The chimps were measured both while walking upright and while moving on their legs and knuckles(膝关节).That measurement of the energy needed to move around was compared with similar tests on humans and the results are published in this week’s online edition of “Proceedings of the National Academy of Sciences”.

It turns out that humans walking on two legs use only one-quarter of the energy that chimps use while knucklewalking on four limbs(肢).And the chimps, on average, use as much energy using two legs as they did when they used all four limbs.

However, there were differences among chimps in how much energy they used, and this difference corresponded to their different manner of walking and anatomy(解剖构造).One of the chimps used less energy on two legs, one used about the same and the others used more, said David Raichlen, assistant professor of anthropology at the University of Arizona.

“What we were surprised at was the variation(变异) ”, he said in a telephone interview. Interview. “That was pretty exciting, because when you talk about how evolution works, variation is the bottom line, without variation there is no evolution.”

Walking on two legs freed our arms, opening the door to drive the world, said Raichlen. “We think about the evolution of bipedalism as one of first events that led hominids(原始人)down the path to being humans.”

The research was supported by the National Science Foundation and the L.S.B.Leakey Foundation.

The underlined word “Bipedalism” in Paragraph 2 probably means____.

A．moving sideways              B．walking upright

C．walking on four legs            D．running fast

We can infer from the passage that____.

A．scientists have no idea on how humans’ walking on two legs came about

B．scientists have had different views on why chimps walk on four legs

C．scientists have had different views on how humans’ walking on two legs vame about

D．scientists have had similar views on how humans’ walking on two legs came about

What is Paragraph 4 mainly about?

A．How chimps saved energy.

B．Why chimps didn't walk on two legs.

C．David Raichlen studied chimps.

D．Different chimps consumed different energy.

According to the passage, humans walk upright in order to____.

A．conserve energy                  B．differ from other animals

C．free their brains                  D．strengthen their legs

Measures __________at the meeting yesterday must be taken to ________Influenza A from spreading all over the nation.

            A referring to; prevent      B refering to; protect

 C referred to; prevent       Drefered to; protected

Is this the man         yon want to have the radio for me?

A．who；repaired                   B．that；repaired

C．whom；repairing              D．that；repair

Can you imagine being savagely attacked by a dog? What if the attack was so severe that your nose, lips and chin were completely destroyed? How would you feel about yourself? Would you be able to look at yourself in the mirror? And how do you think other people would treat you?

    Isabelle Dinoire is someone who can answer all of these questions honestly and openly.

Last November Isabelle was attacked and mauled by her own dog. The attack was so severe that her lower face was damaged; it seemed, almost beyond repair. She was rushed to hospital and became the first person ever to have a face transplant.

With such severe injuries doctors offered Isabelle little hope that they would be able to repair the damage to her face using conventional surgery.

Shortly after being admitted, she came to the attention of Dr Bernard Devauchelle who, unlike other surgeons, believed there was an alternative: "We found ourselves saying, yes, it's clear this woman needs a transplant," he said.

Two days after the operation she saw her face in the mirror for the first time. She said "I was scared to look at myself, but when I did it was already marvelous and I couldn't believe it. I thought it would be blue and swollen but it was already beautiful."

Now, less than a year after her 15 hour operation, she’s trying to rebuild her life and there is no doubt how she feels about her new face: "I have been saved. Lots of people write saying that I need to go on, that it's wonderful. It's a miracle somehow."

    Although there were ethical questions raised about their decision to carry out the procedure, the doctors who operated on Isabelle are quick to defend their decision.

One of them said "Was it possible for her to live without a face? It's easy to say we shouldn't have done the operation, but her life has changed, she goes shopping, goes on holiday, she lives again."

What would be the best title of the passage?

A. The first face transplant                   B. A successful face operation

C. The most severe damaged face             D. The breakthrough of surgery

The writer uses the five questions at the beginning of the passage to ___________________.

A. tell the story about Isabelle Dinoire           B. show a severe face damage event

C. draw the readers’ attention to the topic         D. invite the readers to answer them

It can be concluded from Isabelle Dinoire’s remarks that___________________.

A. she was too shocked to see herself in the mirror

B. she was satisfied with the result of the operation

C. she thought her damaged face couldn’t be repaired

D.she looked more beautiful than before

According to the passage, which of the following is NOT true?

A. It seemed that it was impossible to recover Isabelle’s face using face transplant

B. After operation Isabelle thought she looked beautiful and rebuilt her life again

C. Some doctors had no better idea to repair the damage to Isabelle’s face

D. It was Dr Bernard Devauchelle who came up with the idea of face transplant

Though different educational systems have different purposes, one thing is certain: all students should take part in examinations.

___1___ the English educational system, students take ___2___ very important ___3___. The first is the eleven-plus, which is taken at the age of eleven ___4___ past. At one time the ability ___5___ on the eleven-plus would have determined ___6___ a child stayed in school. ___7___, however, all children continue in “comprehensive”(综合性的) schools, and the eleven-plus determines which courses of study the child will follow. At the age of fifteen or sixteen, the students are tested for the Ordinary Level of the General Certificate(证书) of Education. This examination covers a wide ___8___ of subjects; once students have passed this exam, they are ___9___ to specialize, so that two-thirds or ___10___ of their courses will be ___11___ physics, chemistry, classical language, or ___12___ they wish to study ___13___. The ___14___ examination, at eighteen, covers only the ___15___ of the special subjects. ___16___ the universities, students study only in their concentrated area, and ___17___ students ever venture(冒险) outside ___18___ subject again; ___19___, the English boy or girl is a specialist ___20___ the age of fifteen.

1. A. On  B. In       C. To      D. For

2. A. four       B. three   C. two     D. one

3. A. subjects  B. languages   C. courses       D. examinations

4. A. somewhat      B. or else C. or so   D. or rather

5. A. seen       B. heard  C. shown D. known

6. A. when      B. if C. that     D. how

7. A. But B. Then   C. So      D. Now

8. A. number  B. part    C. range  D. collection

9. A. allowed  B. passed C. forbidden   D. admit

10. A. much    B. many  C. more   D. most

11. A. in  B. of       C. with    D. on

12. A. whenever     B.however      C.whatever D. wherever

13. A. at all costs    B. at the same time      C. at the least   D. at great length

14. A. late      B. later    C. early   D. final

15. A. context B. content　　       C. book   D. lesson

16. A. Even so       B. Even if      C. Even then   D. Even at

17. A. few      B. no      C. some   D. any

18. A. that      B. their   C. its       D. which

19. A. in any case   B. in all C. in a sense   D. in the end

20. A. of B. from C. at       D. under

How can you find out what is going on inside a person' s body without opening the patient up? Regular X-rays can show a lot. CAT scans can show even more. They can give three-dimensional(三维) view of body organs(器官).

What is a CAT scan? CAT stands for Computerized Axial Tomography(层面X线照相术). It is a special X-ray machine that gets a 360 - degree picture of a small area of a patient's body.

Doctors use X-rays to study and examine diseases and injuries within the body. X-rays can find foreign objects inside the body or to take pictures of some organs inside if special things as dyes or special liquids are added to the organs to be X-rayed.

A CAT scanner, however, uses a beam(光束) of X-rays to give a cross-sectional view of a particular part of the body. A fine beam of X-rays is scanned across the body and circled around the patient from many different angles(角度). A computer analyzes(分析) the information from each angle and produces a clear cross-sectional picture on the screen. This picture is then photographed for later use. Several cross-sections, taken one after another, can give a clear "photo" of the entire body or of any body organs. The newest CAT scanners can even give a clear picture of active, moving organs just as a fast-action camera can "stop the action" giving clear pictures of what appear only mistily(模糊) to the eye. And because of the 360 - degree pictures, CAT scans show 3-dimensional views of organs in a manner that was once only seen during surgery or autopsy (examining a dead body).

69. According to the first two paragraphs, doctors can see the inside of a patient's body by ______.

A. giving the patient an operation

B. checking body organs

C. getting a 360-degree picture of a small area of a patient's body

D. examining the CAT

From the last paragraph, we can infer that ______.

A. the newest pictures become more misty

B. many pictures can be taken at the same time

C. the information about the scanned patient is not highly valued

D. some pictures of the scanned parts of the body are developed for further examinations in the future

The best title of this passage might be ______.

A. Modern X-ray               B. Three-dimensional View

C. Fast - moving Camera       D. CAT Scan

Healthy knees aren't the main consideration in choosing high heels, but new research says chunky heels are just __________as spindly stilettos (细高跟鞋).  

"It takes a long time to feel the effects of knee osteoarthritis (骨关节炎) — and once you do, it is too ]ate," said Dr. Casey Kerrigan, leading researcher of the study and associate professor at Harvard Medical School's department of physical medicine.

"I compare it to smoking — one cigarette is not painful, but over a lifetime it is. Wide-heeled shoes feel comfortable, so women wear them all day long, "Kerrigan said. "They are better for your feet than stiletto heels, but just as had for your knees."

 The idea that high heels are bad for your health isn't new — scientists have warned women for years that they contribute to problems ranging from corns to hammer toes, tendonitis, knee pain, sprained (扭伤) ankles and back problems. 

But in 1998,Kerdgan and a team of Harvard researchers were the first to link high heels and knee osteoarthritis, a painful joint disease that destroys cartilage (软骨) surrounding the knee.

 The first study looked only at stiletto heels, and Kerrigan said she wanted to study the chunky high-heeled shoes she noticed many women wearing.

 "This study confirms what we all intuitively (直觉地) know that high-heeled shoes of any kind are not good for our health," said Dr. Glenn Pfeifer, a San Francisco doctor and member of the American Academy of Orthopaedic Surgeons who was not connected to the study.

1.What’s the main idea of the passage?

2.Which sentence in the passage is the closest in meaning to the following one?

In my opinion ,it is similar to smoking ,for smoking one cigarette does little harm but if you smoke all your life,it’ll be very painful. 

3.Please fill in the blank in the passage with proper words or phrases to complete the sentence.(within ten words)

4.What do you think of wearing the chunky heels according to the passage?(within 30 words)

5.Translate the underlined sentence into Chinese. 

假定你是李华，你所在的学校拟在下个月举办美国电影节（American Film Festival）。请你根据以下要点给你的美国朋友Peter写一封短信，邀请他给学生做一次讲座。信的主要内容包括

1. 讲座目的：使学生对美国电影有所了解；

2. 讲座内容：简要介绍美国电影（制片）业的历史；  

3. 讲座时间：1小时30分钟左右。

注意：可以适当增加细节，使结构完整；词数80--100左右

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Paul was a good athlete when he was a middle school student. He liked running and jumping and won some medals at the sports meetings. So he was tall and strong. Suddenly war broke out and the young man joined the army. He was sent to the front and killed several enemy soldiers. Two years later he raturned to his home town and found a job at the police station. People had known about his bravery by then and they all liked the polite young man.

One day a few young men had drunk too much before they came in a cinema. They danced and sang there and the film couldn't be shown. Paul was ill that day and went to the hospital. When he was passing there, the young men were beating an old man. He went to stop them and they began to fight. He caught them all and sent them to the police station. Since then all the bad men in the town were afraid of the brave policeman.

It was a summer evening. The weather was hot and few people could stay indoors. Paul was on duty and sat by the telephone. Suddenly in rushed a beautiful girl with a book in her hand. She stood there, shaking in her shoes.

“What's the matter, madam? ”asked Paul.

“I wish you could protect me sir, ”answered the girl.

“Protect? ”Paul said in surprise. “For what? ”

The girl showed the book to Paul. The young man understood at once: it was a book about Ghosts（鬼）！

Paul won some medals because ____.   [    ]

A. he was a middle school student

B. he was tall and strong

C. he kept doing morning exercises

D. he was good at running and jumping.

Paul was ____ after he joined the army. [    ]

A. a good athlete

B. a brave soldier

C. a polite policeman

D. a brave policeman

Paul sent the young men to the police station because ____.       [    ]

A. they made some trouble（闹事）at the cinema

B. they drank much in the restaurant

C. they wouldn't see the filin

D. they wanted to fight with him

Paul sat by the telephone that evening because ____.   [    ]

A. he was waiting for an important call

B. he was going to call somebody

C. he was on duty

D. he wasn't afraid of hotness

Everyone has got two personalities—the one that is shown to the world and the other that is secret and real．You don't show your secret personality when you're awake because you can control your behaviour，but when you're asleep， your sleeping position shows the real you．In a normal night，of course，people frequently change their position．The important position is the one that you go to sleep in．

If you go to sleep on your back，you're a very open person．You normally trust people and you are easily influenced by fashion or new ideas．You don't like to upset people，so you never express your real feelings．You're quite shy and you aren't very confident．

If you sleep on your stomach，you are a rather secretive（不坦率的）person．You worry a lot and you're always easily upset．You're very stubborn（顽固的），but you aren't very ambitious．You usually live for today not for tomorrow．This means that you enjoy having a good time．

If you sleep curled up（卷曲），you are probably a very nervous person．You have a low opinion of yourself and so you're often defensive．You're shy and you don't normally like meeting people．You prefer to be on your own．You're easily hurt．

If you sleep on your side，you have usually got a well-balanced personality．You know your strengths and weaknesses．You're usually careful． You have a confident personality．You sometimes feel anxious，but you don't often get depressed．You always say what you think even if it annoys people．

According to the writer，you naturally show your secret and real personality _____.

A．only in a normal night

B．only when you go to sleep

C．only when you refuse to show yourself to the world

D．only when you change sleeping position

Which is NOT mentioned in the second paragraph about a person's personality？

A．He or she is always open with others．

B．He or she always likes new ideas earlier than others．

C．He or she is always easily upset．

D．He or she tends to believe in others．

Point out which sentence is used to show the personality of a person who is used to sleeping on his or her stomach？

A．He or she is careful not to offend others．

B．He or she doesn't want to stick to his or her opinion．

C．He or she can't be successful in any business．

D．He or she likes to bring others happiness．

Maybe you don't want to make friends with a person who sleeps curled up．Why？

A．He or she would rather be alone than communicate with you．

B．He or she is rarely ready to help you．

C．He or she prefers staying at home to going out．

D．He or she wouldn't like to get help from you．

It appears that the writer tends to think highly of the person who sleeps on one side because ______ ．

A．he or she always shows sympathy for people

B．he or she is confident，but not stubborn

C．he or she has more strengths than weaknesses

D. he or she often considers annoying people