to market research firm IDC.
That" s bad news for backs, necks and shoulders.
"Laptops are basically not designed based on human bodies-unless you" re 2 feet tall," says physician
Norman J. Marcus, a muscle (肌肉 ) specialist in New York City.
When you work at a computer, the keyboard should be at elbow height, so your upper and lower arms
form an angle (角度) of 90 degrees or more. The monitor (显示器) should be at about eye level so you can
rest back in a chair with back support.
But most users simply set their laptops on a desk or table. The keyboard is too high, which makes your
arms reach up, your shoulders rise and your wrists (手腕) bend down. The monitor is too low, which pulls
your head and neck forward and down and this may hurt your back.
That" s OK if you use your laptop occasionally, for short periods. But if you use one for hours without
stopping-as do millions of college students, business travelers, video-gamers and growing numbers of office
workers-you" re setting yourself up for muscle problems that can make your entire upper body hurt.
Experts have warned about laptop problems for years-but without success. People continue to abandon
large and heavy desktops in favor of the smaller and lighter laptops. And WiFi (无线局域网 ) connections let
us use laptops anywhere-in bed, on the floor-and in all kinds of positions.
B. muscle pains are mainly caused by laptops
C. laptops are not suitable for people of usual height
D. laptops cause a lot of diseases easily
B. there are no suitable places for laptops
C. we shall buy desktops instead of laptops
D. desktops will face a hard future
B. People pay little attention to the risks of laptop use.
C. Most people use laptops more often than desktops.
D. Laptops bring people more disadvantages than advantages.
B. tell us people prefer laptops to desktops
C. persuade people not to use laptops any more
D. warn people of health problems caused by laptops
and Food and Agriculture Organization showed us a report. The findings are based on the information collected
in 170 nations during the past ten years.
FAO officials say the world has lost about one thousand kinds of farm animals in the past one hundred years, and that 1/3 of them are at risk of disappearing. FAO officials are concerned about farmers producing enough to feed the world" s population. FAO has got the information about over 4,000 kinds of birds and animals
population. 740 of those breeds no longer exist. 1,300 others are said to be endangered or at high risk of
extinction.
Many of them are important than animals. For example, in Madagascar, Renitelo cattle have almost
disappeared. In the Philippines, the Banaba chicken is now rare. Fewer than 1,000 of the birds remain. In
Mexico, the Chiapas sheep are at the export (出口 ) of animals from industrial to developing countries. The
report says animals from industrial nations are often considered more productive in developing countries.
However, the animals are best for the environment of areas they are from. Now the UN is starting a five-year
project to help countries better understand the issue.
B. disappear
C. endanger
D. risk
2. The Banaba chicken may be _____ .
B. raised on farms
C. eaten up
D. living long
B. The developing countries are unable to raise animals.
C. The exported animals grow up more quickly or cheaper.
D. Some can have illness more easily.
B. A Five-year Project
C. The Protection of Nature
D. The Findings of Endangered Animals by FAO
Though its number is increasing ,the Hainan deer is not yet out of the woods of endangerment. That is , it is
in great danger.
The Hainan deer, or EId"s deer, is found only in Hainan Province of South China. It looks similar to the sika
deer, but bears no plum flower spots on the body.
In the Datian Nature Reserve of Hainan the deer population has increased from 26 in 1976 to the present
500. But with the development of the island in recent years, the Hainan deer is faced with more serious
challenges to go on living.
The Datian Reserve is only 13 square kilometers in area, which is too small for the Hainan deer to find good
places or enough food.
Because more and more people have moved to the island and settled here, more land is used for building.
Weak deer which are driven out by their fellows are threatened by human neighbours. Illegal hunting is pushing
the valuable deer into difficult situation.
The Hainan deer is brown, with the female lighter in colour, and has a clear black line across the back. They
like to feed in bamboo forests, bushes and grassland under the rocks. They belong to herbivores, which feed on grass instead of meat.
From mid-January to June is the breeding season for the Hainan deer. The male deer fight against one
another with their antlers to determine the order to breed. The top winner has many more choices than the
others.
In September, the female deer start to bear fawns. The little deer follow their mothers until two years of age.
B. has no plum flower spots on the body
C. is out of the woods of endangerment
D. hasn"t increased since 1976
B. The Datian Reserve is too small.
C. Illegal hunting.
D. All of the above.
B. get enough food
C. get good places
D. get more baby deer
B. introduce us a most precious deer
C. let us know where Hainan deer live
D. warn us that the Hainan deer is endangered
knocked down. Natural resources are exhausted. That"s what makes the Galapagos Islands so special-it"s
one of the few pristine (原始状态的) places on Earth that nature can truly call its own.
For people used to having wild animals run at the scent of humans, a visit to the Calapagos is a real
eye-opening experience. Over 1,600 kms west of Ecuador (厄瓜多尔) ,the islands are home to a unique
variety of animals that have absolutely no fear of people. Visitors can play on the beach with sea lions and
giant sea turtles, swim with dolphins and whales, and get close enough to the penguins to count the eggs
in their nests.
The islands were declared a national park over 40 years ago, and the number of human visitors is tightly
limited to avoid damaging the environment or putting stress on the animals. Tourists have to pay a $100 daily
visitors fee,a nd can"t step off the boat unless accompanied (陪同 ) by an official guide. Once on the islands,
you have to stay on the trail, but that rarely presents a problem: the animals are so curious about people that
they"ll usually come up to say hello.
"It"s a little like being in a zoo," said one traveler." But instead of us looking at the animals, the animals are
looking at us.
Aside from the wildlife, one of the islands" more unusual features is its post office. You can send postcards
for free, but the catch is that there"s no postman to collect them. Instead, travelers pick up mail addressed to
people who live near them back home, and then hand-deliver the postcards when their trip is finished.
B. near Ecuador
C. in the Atlantic Ocean
D. independent of Ecuador
B. Sea lions.
C. Goats.
D. Dolphins.
B. the post office
C. the tourists
D. the guides
B. Humans and Nature
C. Go Head to Head
D. Ecuador-An Island Country
China"s giant panda habitat (栖息地) was included on the World Heritage List Wednesday at the 30th session
of the World Heritage Committee( WHC) in Vilnius, capital of Lithuania.
Another Chinese site applying for inclusion, the ruins of the Shang Dynasty capital in Anyang, Henan
Province, is also due to be discussed by members.
After deliberation, the 30th session of the WHC unanimously (一致性地) agreed to include the giant panda
habitat, making it the 35th Chinese site on the list.
"We greatly thank the Chinese Government for submitting (提交) such a good application to the WHC to
enrich tile World Heritage List," said the WHC.
"We greatly thank the Chinese Government for its tremendous effort to protect such a precious site of
bio-diversity (生物多样性)."
Wang Fengwu, a member of the Chinese delegation at the meeting, told Chinese reporters that the decision
would prompt effective protection of rare and endangered animals and plant species.
The giant panda habitat of Sichuan Province covers a 9,510 square-kilometre area including the
world-renowned Wolong Nature Reserve, China has spent 20 years trying to get the area included _____,said
Wang, who is also deputy director general of the Department of Urban Development at the Ministry of
Construction.
The application topped a list of 37 proposed new sites vying (竞争) for inclusion. The giant panda habitat is
home to at least 300 giant pandas and a variety of endangered flora (植物).
The World Wildlife Fund"s former China director James Harkness once said that the panda"s territory
contained some of the most critical regions for bio-diversity conservation in the world.
________________________________________________________________________________________
2. Which sentence in the passage can be replaced by the following one?
After much consideration, all the members of the 30th session of the WHC agreed to include the giant
panda habitat as the 35th Chinese site on the World Heritage List.
________________________________________________________________________________________
3. Please fill in the blank in the 7th paragraph with proper words or phrases to complete the sentence.
( Please answer within 10 words. )
________________________________________________________________________________________
4. What benefits will the decision bring to China? ( Please answer within 30 words. )
________________________________________________________________________________________
5. Translate the underlined sentence in the passage into Chinese.
________________________________________________________________________________________
They collected or killed only enough for the clan"s survival. Early clans were nomadic, which means that
they did not stay in one place. Instead, they moved around, following the animals that were their main
food source and seeking areas where seasonal plants grew wild. Moving around seasonally helped to
protect the environment. The land had time to recover and animals had time to breed (繁殖) before the clan
returned for the next season.
As time went by, these small family clans joined with others to form larger groups for protection. Joining
with other clans gave them more hunters and more women to help cut up the meat and share it between
families. Eventually, people tamed (驯养) wild animals such as dogs and horses. People settled around rivers
and fertile plains to share responsibilities and duties. Then, people began to plant crops instead of moving to
areas where the plants grew. This development changed the environment.
Traditional forms of work also changed. Some people were hatter at performing a particular task than
other clan members, so they began to specialize in things they were good at doing. This also meant that they
began to exchange their goods for things that others produced.
People began to communicate with distant tribes. Land was cleared for roads. Foreign plants and animals
were transported to places where they had not existed before. Specialization also gave people more free time.
So art, dance and music became important ways of expressing feelings and thoughts. This was how many
great civilizations started.
Compared to the past, modern civilization has experienced many changes to become the highly developed
society that exists today. Populations have increased rapidly. Forests have been cleared for farms. Inventions
and technology have made work easier.
However, pollution and other serious problems have also resulted from human progress. As concerned
citizens, it is up to us to learn from past mistakes and to help maintain and improve our environment.
B. they ate only vegetables
C. they killed only enough for food
D. they loved animals
B. to seek safety
C. to share caves
D. to protect environment
B. Modem civilization began when people started to live together in big groups.
C. Modem advancements are always good for the environment.
D. People began to exchange goods because they didn"t have enough money.
B. civilization has improved traditional forms of work
C. our environment has been affected by human progress
D. early people understood environmental protection
- 1(11分)抗震救灾中直升飞机沿水平方向匀速飞往机场取救灾物资,悬挂着m=400kg空箱的悬索与竖直方向的夹角θ1= 45
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