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 |
Our tours leave directly from the Las Vegas Strip, no terminals, saving up to 2 hours’ time! Our prices include all fees—including fuel and anything else you can think of; we also beat any competitor’s price by 5%.
South Rim—Grand Canyon Luxury Coach Tour $79 Per Person
Our Grand Canyon Tour is the only luxury Motor Coach Tour that stops at Bright Angel Lodge for a full three hours, at which point you can take the free shuttle to multiple viewpoints including Mather Point, Yavapai Point…click above for more details.
West Rim—Grand Canyon Tour $125 Per Person
This tour stops at Haulapai Indian Reservation of the Grand Canyon. These stops include Eagle and Guano Point. There’re also extra stops along the way for shopping and smoking. This package not only includes the Grand Canyon, but a short photo stop at the Hoover Dam as well… click above for more details.
Airplane Tours & Helicopter Tours
These breath-taking tours take you into the skies above the Grand Canyon for a once-in-a-life-time adventrue that can be shared by the whole family or by yourself. Airplane Tours starting at $164 per person, and Helicopter Tours starting at $304 per person…click above for more details.
Hoover Dam—AM/PM Mini Tour $37.5 Per Person
Hoover Dam Mini Tour starts your morning or afternoon with a short drive to Lake Mead—created by the Dam in 1935, and continues along to include the Power Plant Tour, guided by a Hoover Dam expert. A delicious lunch is included…click above for more details.
Las Vegas to Hollywood 1 Day Tour $185 Per Person
This tour takes you sightseeing down and around Hollywood Blvd/Beverly Hills, home of the world-famous Walk of Fame as well as Grauman’s Chinese Theatre. It ends at beautiful Santa Monica Beach & Pier… click above for more details.
1. If you’re with a self-challenging spirit, you probably choose_______.
A. West Rim—Grand Canyon Tour
B. Hoover Dam—AM/PM Mini Tour
C. Airplane Tours & Helicopter Tours
D. Las Vegas to Hollywood 1 Day Tour
2. To take Hoover Dam—AM/PM Mini Tour, how much will a couple and their twin daughters pay?
A. $150. B. $75. C. $112.5 D. $37.5
3. Which of the following is NOT true according to the passage?
A. Mather Point is included in the only luxury Motor Coach Tour.
B. Two tours mentioned both involve the Hoover Dam.
C. Lake Mead is a man-made project.
D. Travelers can enjoy plays at Grauman’s Chinese Theatre.
4. The passage is most probably chosen from________.
A. a newspaper B. a magazineC. a TV ad D. a website
Several times my daughter had telephoned to say, “Mother, you must come to see the daffodils(黄水仙)before they are over”. I wanted to go, but it was a two-hour drive from Laguna to Lake Arrowhead. “I will come next Tuesday,” I promised, a little reluctantly, on her third call.
Next Tuesday dawned cold and rainy. Still, I had promised, and so I drove there. When I finally walked into Carolyn’s house and hugged and greeted my grandchildren, I said, “ Forget the daffodils, Carolyn! The road is invisible in the clouds and fog, and there is nothing in the world except you and these children that I want to see!”
My daughter smiled calmly and said, “We drive in this all the time, Mother. You will never forgive yourself if you miss this experience.”
After about twenty minutes, we turned onto a small gravel road and I saw a small church. On the far side of the church, I saw a hand-lettered sign that read, “Daffodil Garden.”
We got out of the car and each took a child’s hand, and I followed Carolyn down the path. Then, we turned a corner of the path, and I looked up and gasped. Before me lay the most glorious sight. There were five acres of flowers. “But who has done this?” I asked Carolyn. “It’s just one woman,” Carolyn answered. “That’s her home.” Carolyn pointed to a well-kept A- frame house that looked small and modest in the midst of all that glory. We walked up to the house. On the patio(露台), we saw a poster. “Answers to the Questions I Know You Are Asking” was the headline.
The first answer was a simple one. “50,000 bulbs(球茎),” it read. The second answer was, “One at a time, by one woman.” The third answer was, “Began in 1958.”
I thought of this woman whom I had never met, who, more than forty years before, had begun—one bulb at a time—to bring the beauty and joy to the mountain top.
1. The author didn’t go to see the daffodils at first because__________.
A. she was not interested in them B. they were growing on a mountain top
C. the weather was not good enough D. it was a long drive to her daughter’s house
2. Which of the following best describes the author’s feeling seeing the daffodils?
A. Amazed. B. Disappointed. C. Confused. D. Moved.
3. What do we know about the woman living in the A-frame house?
A. She must be out of mind.
B. She acted as a gardener here.
C. It took her great determination to grow the daffodils.
D. She was poor and made her living by selling daffodils.
4. What would be the best title of the passage?
A. A Wonderful Daffodil Garden B. A Remarkable Woman
C. One Bulb at a Time D. I Love Daffodils
第三部分：阅读理解（共20小题，每小题2分，满分40分）
I made a promise to myself on the way down to the vacation beach cottage. For two weeks I would try to be a loving husband and father. Totally loving. No ifs, ands or buts.
The idea had come to me as I listened to a talk on my car radio. The speaker was quoting a Biblical passage about husbands and their wives. Then he went on to say, “Love is an act of will. A person can choose to love.” To myself, I had to admit that I had been a selfish husband. Well, for two weeks that would change.
And it did. On arriving at the beach cottage, I kissed Evelyn meeting me at the door and said, “That new yellow sweater looks great on you.” “Oh, Tom, you noticed”, sh e said, surprised and pleased. Maybe a little puzzled. After the long drive, I wanted to sit and read. Evelyn suggested a walk on the beach. I started to refuse, but then I thought, “Evelyn’s been alone here with the kids all week and now she wants to be alone with me.” We walked on the beach while the children flew their kites.
So it went. Two weeks of not calling the Wall Street firm where I am a director; a visit to the shell museum though I usually hate museums. Relaxed and happy, that’s how the whole vacation passed. I made a new promise to keep on remembering to choose love.
There was one thing that went wrong with my experiment, however. Evelyn and I still laugh about it today. On the last night at our cottage, preparing for bed, Evelyn stared at me with the saddest expression.
“What’s the matter?” I asked her.
“Tom,” she said in a voice filled with distress, “ I don’t?”
“What do you mean?”
“Well…that checkup I had several weeks ago…our doctor…did he tell you something about me? Tom, you’ve been so good to me…am I dying?”
It took a moment for it all to be understood. Then I burst out laughing.
“No, honey,” I said, wrapping her in my arms. “You’re not dying; I’m just starting to live.”
1. From the story we may infer that Tom drove to the beach cottage ______.
A. with his family B. with Evelyn C. alone D. with his children
2. During the two weeks on the beach, Tom showed more love to his wife because ______.
A. he was determined to be a good husband
B. he had made a lot of money in his Wall Street firm
C. she looked lovely in her new clothes
D. the doctor said his wife was seriously ill
3. The author says, “There was one thing that went wrong with my experiment.” What does “one thing” refer to?
A. He praised her sweater, which puzzled her.
B. She insisted on visiting a museum, which he hated.
C. He knew something about her illness but didn’t tell her.
D. He was so good to her that she thought she must be dying.
4. By saying “I’m just starting to live,” Tom means that ______.
A. he is just beginning to understand the real meaning of life
B. he is just beginning to enjoy life as a loving husband
C. he lived an unhappy life before and is now starting to change
D. he is beginning to feel regret for what he did to his wife before
Astronauts’ meals have come a long way from the free-dried powders and semi-liquid pastes of decades ago，now US scientists want to grow vegetables in mini-greenhouses on the moon．
Scientists say they are looking forward to a time when residents of future lunar or even Martian outsteps will be able to dine on fresh vegetables．Paragon Space Development Corporation has unveiled what it called the first step toward growing flowers——and eventually food—on the moon.
This is a sealed greenhouse that looks like a bell jar encased in a 46-cm triangular aluminium frame(三角铝框架)．It is designed to safely land a laboratory plant on the lunar surface，and protect it while it grows．
The miniature greenhouse is to be launched into space by Odyssey Moon Ltd, a participant in the Google Lunar X Prize. This competition offers $20 million to any entrant(参加者) who can launch，land and operate a rover（漫游）on the lunar surface.
Paragon officials say future testing of the“Lunar Oasis”will be driven by Odyssey’s flight schedule，which will not happen until 2012 at the earliest．
When it does lift off the greehouse will contain the seeds of Brassica, a hardy plant related to Brussels sprouts and cabbage．Because Brassica goes from seed to flower in just 14 days，it can complete its life cycle in a single lunar night
“Colonizing the Moon or Mars seems so far away，but it is important that we do this research now，” Paragon president Jane Poynter said．
“It takes a long time to get a lot of research，and to get integrated，reliable efficient systems before colonists move in．”she said．
1. The article is written mainly to _________.
A. predict the astronauts’meals in the future
B. introduce an experiment“Lunar Oasis’’
C. tell us the future development of astronomy
D. focus on the human’s great progress
2. The article implies that __________.
A. astronauts ean grow flowers in space at present
B. Paragon and NASA will carry out the test separately
C. Lunar Oasis is a series of experiments carried out in space
D. the earliest testing of the Lunar Oasis may be in 2012
3. The underlined word “colonists”in the last paragraph probably has the meaning of _______.
A. plants B. wild beastsC. human beings D. scientists
4. The seeds of Brassica will be contained in the greenhouse mainly because _______.
A. their life cycle is much shorter
B. they are more nutritious than other food
C. they are related to Brussels sporouts and cabbage
D. they are very delicious
The Harvard Student-led Walking Tour
Let a student show you Harvard···on a free walking tour．
We welcome our neighhours to stop by the Harvard University Events＆Information Centre, located in the Holyoke Centre Arcade at 1350 Massachusetts Avenue in the heart of Harvard Square in Cambridge．
Let a student take you and your family, school，or organization on an engaging，hour-long free historical tour of the Harvard Campus. The tours leave from the Events＆Infomlation Centre．Not only will you discover the location of fascinating exhibition and programmers on campus, you will also see Harvard’s rich sampling of American history and architecture from the Colonial period to the present.
Sehedule of Tours
Tours leave the Events＆Information Centre at 10 a.m. and 2 p.m. Monday through Friday, and at 2 p.m. on Saturday through the academic year (February 4 through May 2；September 23 through December 16). Summer tours (June 24 through August 15) are offered at 10 a.m., 11:15a.m.，2 p.m.，and 3:15 p.m. Monday through Saturday．Reservations for special tours of 20 or more people may be made by calling the Events＆Information Centre at (617) 495—1573 or emailing icenter@ camail. harvard，edu．Tours are suspended March 23 through April 2 for Spring Break, May 3 through June 23 for Spring intercession(祷告)，and August 16 through September 22 for Summer intercession．
NOTE：Prospective(未来的)students may take tours originating at the Harvard Admission office, located at Byerly Hall on 8 Garden Street in Cambridge．From April through August，the Admissions staff conducts an information session at l0 a. m.，followed by an 11 a. m. tour．Monday through Friday On Saturdays．there is no information session but the 11 a．m．tour is still scheduled．Another session is held year round at 2 p. m. with a 3 p. m. tour following．For more information on tours for prospective students，please call at(617)495—1551．
Harvard University Events＆Information Centre
Location：Holyoke Centre Arcade．1350 Massachusetts Avenue，Cambridge MA 02138
Phone：(617)495—1573
1. A person can join in a tour at ________ on Saturday through the academic year．
A. 10 a.m. B. 2 p.m. C. 11:15 a.m. D. 3:15 p.m.
2. If you want to go for an information session, you can go on _________.
A. May 2 B. June 23 C. August 20 D. September 1
3. A student who wants an information session may _______ for more information．
A. call(617)495—1573 B. call(617)495—1551
C. email icenter@ camail. harvard, edu D. go to the Events＆Information Centre
4. The above advertisement is mainly intended for ____________.
A. foreign visitorsB. freshmen
C. high school students D. those living near Harvard University