Most people are aware that outdoor air pollution can damage their health，but many do not know that indoor air pollution can also have significant health effects.Environmental Protection Agency studies indicate that indoor levels of pollutants may be 3～5 times，and occasionally more than 100 times，higher than outdoor levels.These levels of indoor air pollutants may be of particular concern because most people spend about 90% of their time indoors.
There are many sources of indoor air pollution in any home.These include sources such as oil，gas，coal，wood，and tobacco products，building materials，wet or damp carpet，and furniture made of certain pressed wood products，products for household cleaning and maintenance，personal care，or hobbies，central heating and cooling systems.
Immediate effects may show up after a single exposure (暴露) or repeated exposures.These include irritation of the eyes，nose，and throat，headaches，dizziness.Such immediate effects are usually shortterm and treatable.Sometimes the treatment is simply removing the person’s exposure to the source of the pollution，if it can be identified.
The likelihood of immediate reactions to indoor air pollutants depends on several factors.Age and preexisting medical conditions are two important influences.In other cases，whether a person reacts to a pollutant depends on individual sensitivity，which varies tremendously from person to person.Some people can become sensitized to biological pollutants after repeated exposures，and it appears that some people can become sensitized to chemical pollutants as well.
Certain immediate effects are similar to those from colds or other viral (病毒性的) diseases，so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution.While pollutants commonly found in indoor air are responsible for many harmful effects，there is considerable uncertainty about what concentrations or periods of exposure are necessary to produce specific health problems.People also react very differently to exposure to indoor air pollutants.Therefore，further research is needed to better understand the effects of indoor air pollution and to find efficient ways to protect our health.According to the first paragraph，which of the following is NOT true?
| A．People often fail to notice indoor air pollution. |
| B．Indoor air pollution sometimes is more dangerous than outdoor air pollution. |
| C．Outdoor air pollution may not be so serious as indoor air pollution. |
| D．It is obvious that people have been paying more attention to indoor air pollution. |
According to the author，which may NOT be the source of indoor air pollution?
| A．Building materials. | B．Wet carpet. |
| C．Cooling system. | D．Refrigerators. |
What does the underlined word “irritation” in the third paragraph probably mean?
| A．Bad intention. | B．Much sensitivity. |
| C．Injury. | D．Carelessness. |
Which of the following might be the best title for the passage?
| A．Reactions of Pollution | B．Danger from Home |
| C．Pollution Resources | D．Different Pollutions |
I was 9 years old when I found out my father was ill. It was 1994. But I can remember my mother’s words as if were yesterday: “Kerrel, I don’t want you to take food from your father, because he has AIDS. Be very careful when you are around him.”
AIDS wasn’t something we talked about in our country when I was growing up. From then on, I knew that this would be a family secret. My parents were not together anymore, and my dad lived alone. For a while, he could take care of himself. But when I was 12, his condition worsened. My father’s other children lived far away, so it fell to me to look after him.
We couldn’t afford all the necessary medication for him, and because Dad was unable to work, I had no money for school supplies and often couldn’t buy even food for dinner. I would sit in class feeling completely lost, the teacher’s words muffled as I tried to figure out how I was going to manage.
I did not share my burden () with anyone. I had seen how people reacted to AIDS. Kids laughed at classmates who had parents with the disease. And even adults could be cruel. When my father was moved to the hospital, the nurses would put his food on the bedside table even though he was too weak to feed himself.
I had known that he was going to die, but after so many years of keeping his condition a secret, I was completely unprepared when he reached his final days. Sad and hopeless, I called a woman at a nonprofit National AIDS Support. That day, she kept me on the phone for hours. I was so lucky to find someone who cared. She saved my life.
I was 15 when my father died. He took his secret away with him, having never spoken about AIDS to anyone, even me. He didn’t want to call attention to AIDS. I do.
49. What does Kerrel tell us about her father?
A. He had stayed in the hospital since he fell ill.
B. He depended on the nurses in his final days.
C. He worked hard to pay for his medication.
D. He told no one about his disease.
50. What can we learn from the underlined sentence?
A. Kerrel couldn’t understand her teacher.
B. Kerrel had special difficulty in hearing.
C. Kerrel was too troubled to focus on the lesson.
D. Kerrel was too tired to hear her teacher’s words.
51. Why did Kerrel keep her father’s disease a secret?
A. She was afraid of being looked down upon.
B. She thought it was shameful to have AIDS.
C. She found no one willing to listen to her.
D. She wanted to obey her mother.
52. Why die Kerrel write the passage?
A. To tell people about the sufferings of her father.
B. To show how little people knew about AIDS.
C. To draw people’s attention to AIDS.
D. To remember her father.
Sometimes people add to what they say even when they don't talk.Gestures are the "silent language" of every culture.We point a finger or move another part of the body to show what we want to say.It is important to know the body language of every country or we may be misunderstood.
In the United States,people greet each other with a handshake in a formal introduction.The handshake must be firm.If the handshake is weak,it is a sign of weakness or unfriendliness.Friends may place a hand on the other's arm or shoulder,some people,usually women,greet a friend with a hug(拥抱).
Space is important to Americans.When two people talk to each other,they usually stand about two and a half feet away and at an angle,so they are not facing each other directly.Americans get uncomfortable when a person stands too close.They will move back to have their space.If Americans touch another person by accident,they say,"Pardon me." or "Excuse me."Americans like to look at the other person in the eyes when they are talking.If you don't do so,it means you are bored,hiding something,or are not interested.But when you stare at someone,it is not polite.
For Americans,thumbs-up;means yes,very good,or well done.Thumbs-down means the opposite.To call a waiter,raise one hand to head level or above.To show you want the check,make a movement with your hands as if you are singing a piece of paper.It is all right to point at things but not at people with the hand and index finger.Americans shake their index finger at children when they scold them and pat them on the head when they admire them.
Learning a culture's body language is sometimes confusing(困惑的).If you don't know what to do,the safest thing to do is to smile.
45.From the first paragraph we can learn that_________.
A.gestures don't mean anything while talking
B.gestures can help us to express ourselves
C.we can learn a language well without body language
D.only American people can use gestures
46.In the United States,people often_________.
A.show their friendship by facing each other directly
B.show their friendship by touching each other
C.say "Pardon me." to each other when they are talking
D.get uncomfortable when you sit close to them
47.If you talk with an American friend,it's polite to_________.
A.look up and down at your friend
B.look at the other person in the eyes
C.hide your opinion
D.look at your watch now and then
48.When your friend gives you the thumbs-up,he,in fact,_________.
A.shows his rudeness to you
B.shows his anger to you
C.expresses his satisfaction to you
D.expresses his worries about you
三、阅读理解
Maps are our oldest literature(文献),older than books.People think a map was the first thing the human ever wrote to communicate each other.Perhaps one million years ago,with a stick in the mud of a lake bed,the earlier human drew some lines to stand for a lake,a river,a thick forest and some good hunting grounds beyond the forest.
It made so much sense that people took it for magic(魔术),they expressed the world in a picture.There was something so real about this new thing called "map" that it helped us believe we could get there.It not only strengthened belief that good hunting existed beyond the forest,but it strongly suggested that the future existed;it was a place we could go to and be there tomorrow.What a comfort.On maps all paths lead somewhere.
41.Which of the following statements is true?
A.Maps can't be used to communicate each other.
B.Maps have the same long history as books.
C.No matter how hard you study them,maps don't make any sense.
D.None of the above is true.
42.The earlier human used lines drawn in the mud to express_________.
A.the whole world B.real places
C.strong belief D.great comfort
43.Now people regard some lines drawn by the earlier human as _________.
A.the beginning of maps B.the chanting form of maps
C.real maps D.a part of maps
44.It can be concluded that _________.
A.maps are the most useful way of communicating each other
B.the first map showed somewhere far away
C.the first map showed somewhere very near
D.the first map showed all directions
With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save these in a dangerous situation. That's a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called "Noah's Ark".
Noah's Ark is aimed at collecting eggs, embryos(胚胎), semen and DNA of these animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A & M's College of Veterinary, Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2, 000 species of mammals, birds and reptiles will probably become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
"The nuclear transfer of one species to another is not easy, but the lack of available panda eggs could be a major problem," Kraemer believes. "They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it's difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort," adds Kraemer, who is one of the leaders of the Project at Texas A&M, the first-ever attempt at cloning a dog.
"They are trying to do something that's never been done, and this is very similar to our work in Noah's Ark. We're both trying to save animals that face extinction. I certainly appreciate their effort and there's a lot we can learn from what they are attempting to do. The cooperation between us is very much needed."
67. The final aim of "Noah's Ark" project is to___________. .
A. make efforts to clone the endangered pandas
B. save endangered animals from dying out
C. collect DNA of endangered animals to study
D. transfer the nuclear of one animal to another
68. According to Professor Kraemer, ___________.
A. the long time lasting cloning research could be successful.
B. the eggs transfers immediately result in having a baby.
C. the lack of nuclear transfer could be a major problem to have new pandas.
D. if species should die out, basic building blocks would heal them.
69. The best title for the passage may be______________.
A. China's Success in Pandas Cloning
B. Helping Ways to Avoid Extinction
C. Exploring the Possibility to Clone Pandas
D. The Practice in Noah's Ark
70. From the passage we know that______________.
A. Kraemer and his team have succeeded in cloning a panda
B. scientists try to implant a panda's egg into a rabbit
C. Kraemer will work with Chinese scientists in clone researches
D. about two thousand species are to die out in a century
Girls really prefer pink and boys prefer blue, recent research shows.
The reasons could have its origins in the hunt for food on the African savannah(稀树草原) thousands of years ago. Evolution may have developed women’s preference for pink, perhaps because it helped to find ripe fruit and healthy men with reddish faces, while both men and women have a natural desire for blue, according to scientists at Newcastle University.
“ Everyone in today’s western culture, from parents to toy manufactures, seems to assume that little girls like pink.” Said Prof. Anya Hulbert, who wanted to find out whether the reason was cultural or to do with biology.
A love of salmon, fuchsia and coral does seem to be rooted into females, rather than picked up from their mothers.
The participants in the study were Chinese and British. The Chinese students showed a marked preference for red, “ Culture may contribute to this natural female preference,” said Pro. Hulbert.
In her experience, 208 young adult men and women were asked to select, as rapidly as possible, their preferred color. Hulbert and her colleague Dr. Yazhu Ling marked the results and found that while men preferred blue, women tended to choose pink.
Hulbert said she could only prefer about the preference for blue: “Here again, I would favor evolutionary arguments. Going back to our savannah days, we would have a natural preference for a clear blue sky, because it signals good weather. Clear blue also signals a good water source.”
63. The passage mentions “the African savannah” to show that_____.
A. the ancient Africa was a beautiful place
B. human beings lived in Africa at first
C. women and men have different color preference
D. color preference has its historical origins
64. It can be inferred that the underlined word “fuchsia”_____.
A. is probably a kind of toy
B. is probably pink in color
C. can be only found in Africa
D. hardly causes men’s interest
65. By saying “the Chinese students for red.” in Para. 5, the writer means_____.
A. red is the Chinese students’ favorite color
B. the Chinese prefer red more than the British
C. culture influences people’s color preferences
D. the study was carried out by two nations
66. What can we know from the last paragraph?
A. Hulbert thinks evolution explains why people prefer blue.
B. Hulbert has a strong desire for “savannah days”.
C. Blue is a natural signal of all good things
D. While boys like blue, girls like pink.