A new study links heavy air pollution from coal burning to shorter lives in northern China. Researchers estimate that the half-billion people alive there in the 1990s will live an average of 5 years less than their southern counterparts because they breathed dirtier air.

??? China itself made the comparison possible: for decades, a now-discontinued government policy provided free coal for heating, but only in the colder north. Researchers found significant differences in both particulate pollution of the air and life expectancy in the two regions.

??? While previous studies have found that pollution affects human health, "the deeper and ultimately more important question is the impact on life expectancy," said one of the researchers, Michael Greenstone, a professor of environmental economics at Massachusetts Institute of 一Technology. "This study provides a unique setting to answer the life expectancy question because the(heating) policy dramatically changes pollution concentrations（含量），，，Greenstone said in an email. "Further, due to the low rates of migration in China in this period, we can know people's exposure over long time periods," he said.

??? The policy gave free coal for fuel boilers to heat homes and offices to cities north of the Huai Riv饑which divides China into north and south. It was in effect for much of the 1950-198,0 period of central planning, and, though discontinued after 1980, it has left a legacy（遺留） in the north of heavy coal burning, which releases particulate pollutants into the air that can harm human health. Researchers found no other government policies that treated China's north differently from the south.

??? The researchers collected data for 90 cities, from 1981 to 2000, on the annual daily average concentration of total suspended（懸浮的）particulates. In China, those are considered to be particulates that are 100 micrometers or less in diameter, sent out from sources including power stations, construction sites and vehicles. Among them, PM2.5 is of especially great health concern because it can go deep into the lungs.

??? The researchers estimated the impact on life expectancies using death data from 1991-2000． They found that in the north, the concentration of particulates was 184 micrograms per cubic meter一or 55 percent higher than in the south, and life expectancies were 5.5 years lower on average across all age ranges.

1.The main idea of this passage is that＿·

A. research in China finds air pollution shortened life expectancy

B．the government provided free coal for heating in North China

C．coal burning causes bad air quality across China

D. a new study finds different particulates in South China

2.According to Greenstone,＿greatly contributed to the high pollution concentrations in North China.

A. power stations B. construction sites

C. the free heating policy D. gases from vehicles

3.It is implied in the passage that＿·

A. coal is no longer used for heating in North China

B．air quality was comparatively better in South China

C. southerners burned coals for heating in the 1980s

D．people preferred to live in South China after 1980

4.The underlined word "particulates" most probably means＿．

A. dirty clouds B. particular smoke

C. harmful dust D. dangerous bacteria

St Paul’s Cathedral
Ludgate Hill, EC4
Underground: St Paul’s; Bus: 6,8,11,15,22,25
Open: Daily 8:00—19:00 (17:00 from Oct. to Mar.) . Entrance free
Designed by the great architect, Sir Christopher Wren, St Paul’s Cathedral was built following the Great Fire of London of 1666, which destroyed the gothic cathedral on the site at that time. It is crowned by a magnificent dome and its choir (唱詩(shī)班) is internationally famous. Prince Charles and Lady Diana Spencer were married here in 1981.
Buckingham Palace
South end of the Mall (SW1)
Underground: St. James’s Park, Victoria, Hyde Park Corner, Green Park; Bus: 2, 11, 14, 16, 19, 22, 24, 29, 30, 38, 52, 73, 74, 137
Buckingham Palace is the official residence of the monarch (君主) for much of the year. (When the monarch is in residence, a flag flies over the palace.) The Mall is a very impressive wide street, leading from Buckingham Palace to Trafalgar Square.
Note: As the palace is the monarch’s official residence, it is not open to the public.
The Tower of London
Tower Hill, EC3
Underground: Tower Hill; Bus: 42, 78
Open: Mon—Sat.9
Parts of the Tower of London are over nine centuries old, as building began under William the Conqueror in 1078. Famous as a prison in the distant past, the Tower has also been a royal residence, a zoo and an observatory, among other things. It is now a museum and many thousands of people visit it every year in particular to see the Crown Jewels.
Westminster Abbey
Broad Sanctuary, SW1
Underground: Westminster, St James’s Park; Bus: 3, 11, 12, 24, 29, 39, 53, 59, 76, 77, 88, 109, 155, 168, 170, 172, 184, 503
Open: Daily 8:00—18:00 (Mar.—Dec, Tuesday till 20:00)
Entrance free
A Benedictine abbey which already existed on the site was rebuilt by Edward the Confessor and consecrated in 1065. On the way to its present form, the abbey was extended in the 13th—16^th centuries, with the two west towers being added in the 18th. There are many famous tombs in the abbey, including that of the unknown Warrior and those of many poets and writers.
71. These texts are most probably taken from ______.
A. a history book about London
B. a guidebook for visitors to London
C. a book about London’s churches and cathedrals
D. a book describing London’s development
No.11 bus can take you to all three of these places:
A. St Paul’s Cathedral, Westminster Abbey and the Tower of London
B. St Paul’s Cathedral, Westminster Abbey and Buckingham Palace
C. St Paul’s Cathedral, the Tower of London and Buckingham Palace
D. Westminster Abbey the Tower of London and Buckingham Palace
73. You can see the inside of all the buildings except ______.
A. St Paul’s Cathedral                        B. The Tower of London
C. Westminster Abbey                        D. Buckingham Palace
74.If you travel by Underground, you can visit two places by getting off at one station. What are the two places?
A. Buckingham Palace and Westminster Abbey
B. Buckingham Palace and St Paul’s Cathedral
C. Westminster Abbey and the Tower of London
D. The Tower of London and St Paul’s Cathedral
75.Among these four famous buildings, _____ is (are) free of charge.
A. The Tower of London
B. Buckingham Palace
C. Westminster Abbey and St Paul’s Cathedral
D. The Tower of London and St Paul’s Cathedral

Over the last 70 years, researchers have been studying happy and unhappy people and finally found out ten factors that make a difference. Our feelings of well-being at any moment are determined to a certain degree by genes. However, of all the factors, wealth and age are the top two.

Money can buy a degree of happiness. But once you can afford to feed, clothe and house yourself , each extra dollar makes less and less difference.

Researchers find that, on average, wealthier people are happier. But the link between money and happiness is complex. In the past half-century, average income has sharply increased in developed countries, yet happiness levels have remained almost the same. Once your basic needs are met, money only seems to increase happiness if you have more than your friends, neighbors and colleagues.

“Dollars buy status, and status makes people feel better,” conclude some experts, which helps explain why people who can seek status in other ways---scientists or actors, for example—may happily accept relatively poorly-paid jobs.

In a research, Professor Alex Michalos found that the people whose desires—not just for money, but for friends, family, job, health—rose furthest beyond what they already had, tended to be less happy than those who felt a smaller gap. Indeed, the size of the gap predicted happiness about five times better than income alone. “The gap measures just blow away the only measures of income.” Says Michalos.

Another factor that has to do with happiness is age. Old age may not be so bad. “Given all the problems of aging, how could the elderly be more satisfied?” asks Professor Laura Carstensen.

In one survey, Carstensen interviewed 184 people between the ages of 18 and 94, and asked them to fill out an emotions questionnaire. She found that old people reported positive emotions just as often as young people, but negative emotions much less often.

Why are old people happier? Some scientists suggest older people may expect life to be harder and learn to live with it, or they’re more realistic about their goals, only setting ones that they know they can achieve. But Carstensen thinks that with time running out, older people have learned to focus on things that make them happy and let go of those that don’t. “People realize not only what they have, but also that what they have cannot last forever,” she says. “A goodbye kiss to a husband or wife at the age of 85, for example, may bring far more complex emotional responses than a similar kiss to a boy or girl friend at the age of 20.

1.According to the passage, the feeling of happiness ________.

A．is determined partly by genes              B．increases gradually with age

C．has little to do with wealth                 D．is measured by desires

2.Some actors would like to accept poorly-paid jobs because the jobs_____.

A．make them feel much better               B．provide chances to make friends

C．improve their social position               D．satisfy their professional interests

3.Aged people are more likely to feel happy because they are more______.

A．optimistic         B．successful         C．practical          D．emotional

4.Professor Alex Michalos found that people feel less happy if _______.

A．the gap between reality and desire is bigger

B．they have a stronger desire for friendship

C．their income is below their expectation

D．the hope for good health is greater

SeaWorld San Diego is one of the world's famous marine adventure parks with 200 acres of world-class shows, thrilling rides and unforgettable animal encounters. More than 80 million visitors have explored the mysteries of the sea here.and spent the day checking out all eleven shows including the performance of Shamu the killer whale. In between shows you can enjoy yourself on Shipwreck Rapids. When you find that the excitement has drained your energy you can take a break to watch Shamu close! Summer special SeaWorld San Diego 7-days pass

Adults at Kid's Price! Unlimited admission to SeaWorld San Diego for up to 7 consecutive(連續(xù)的)days from date of first use.(available through September 30, 2010)

Adult (ages 13+) Gate Price $69.00 Your Price$56.50

Child (ages 3-12) Gate Price $59.00 Your Price $56.50

7-Day Pass FREE BONUS: SeaWorld San Diego

The Go San Diego Card is your ticket to the best San Diego has to offer. For one price you can enter over 55 attractions – including the San Diego Zoo, The U.S.S. Midway, Legoland, Whale Watching Excursions, and much more. The Go Card is the only ticket you need, saving you up to 55% compared to buying individual admissions. Plus, enjoy VIP access to some of San Diego's top attractions.（available April 1, 2010 – March 31, 2011）

Adult (ages 13+) Gate Price $284.00 

Child (ages 3-12) Gate Price $210.00

Child’s Ticket for Only $5.00

For nearly 50 years, SeaWorld Parks & Entertainment has been rescuing and rehabilitating animals in need. We also work to support conservation efforts around the world. It’s our passion and our duty. We would like to invite you to be a part of it.

Now through December 31, 2010, when U.S. residents purchase a full-price adult admission, children ages 3-12 receive a ticket to SeaWorld for only $5.00. (Limit of one $5.00 SeaWorld Cares child ticket with each adult ticket purchased - up to a maximum of 6 child tickets). If you require more child tickets, you'll need to purchase these from the 7-day child ticket listed above. 100% of the proceeds will be donated by SeaWorld to the SeaWorld/Busch Gardens Conservation Fund.

Adult (ages 13+) Gate Price $69.00 Your Price$69. 

Child (ages 3-12) Gate Price $59.00 Your Price $5

1. The purpose of the passage is ___________.

2. If your couple and your child（age 11）take a tour during Summer special SeaWorld San Diego, _______.

3. In almost half a century, by SeaWorld Parks & Entertainment ____________.

4. From the last paragraph we can learn that _________.

Over the last 70 years, researchers have been studying happy and unhappy people and finally found out ten factors that make a difference. Our feelings of well-being at any moment are determined to a certain degree by genes. However, of all the factors, wealth and age are the top two.

Money can buy a degree of happiness. But once you can afford to feed, clothe and house yourself, each extra dollar makes less and less difference.

Researchers find that, on average, wealthier people are happier. But the link between money and happiness is complex. In the past half-century, average income has sharply increased in developed countries, yet happiness levels have remained almost the same. Once your basic needs are met, money only seems to increase happiness if you have more than your friends, neighbors and colleagues.

“Dollars buy status, and status makes people feel better,” conclude some experts, which helps explain why people who can seek status in other ways－scientists or actors, for example－may happily accept relatively poorly-paid jobs.

In a research, Professor Alex Michalos found that the people whose desire－not just for money, but for friends, family, job, health－rose furthest beyond what they already had, tended to be less happy than those who felt a smaller gap(差距). Indeed, the size of the gap predicted happiness about five times better than income alone. “The gap measures just blow away the only measures of income.” Says Michalos.

Another factor that has to do with happiness is age. Old age may not be so bad. “Given all the problems of aging, how could the elderly be more satisfied?” asks Professor Laura Carstensen.

In one survey, Carstensen interviewed 184 people between the ages of 18 and 94, and asked them to fill out an emotions questionnaire. She found that old people reported positive emotions just as often as young people, but negative emotions much less often.

Why are old people happier? Some scientists suggest older people may expect life to be harder and learn to live with it, or they’re more realistic about their goals, only setting ones that they know they can achieve. But Carstensen thinks that with time running out, older people have learned to focus on things that make them happy and let go of those that don’t.

“People realize not only what they have, but also that what they have cannot last forever,” she says. “A goodbye kiss to a husband or wife at the age of 85, for example, may bring far more complex emotional responses than a similar kiss to a boy or girl friend at the age of 20.”

1.According to the passage, the feeling of happiness __________.

A．has little to do with wealth                B．increases gradually with age

C．is determined partly by genes              D．is measured by desires

2.Some actors would like to accept poorly-paid jobs because the jobs ____________.

A．make them feel much better               B．improve their social position

C．provide chances to make friends            D．satisfy their professional interests

3.Aged people are more likely to feel happy because they are more _________.

A．optimistic         B．successful         C．practical          D．emotional

4.Professor Alex Michalos found that people feel less happy if __________.

A．the gap between reality and desire is bigger

B．they have a stronger desire for friendship

C．their income is below their expectation

D．the hope for good health is greater