阅读理解     There are several advantages in planting trees: they firm the soil, soa

阅读理解     There are several advantages in planting trees: they firm the soil, soa

题型:四川省同步题难度:来源:
阅读理解     There are several advantages in planting trees: they firm the soil, soak up(吸收) extra water and
take carbon dioxide out of the atmosphere.  However, it now turns out that planting trees could add to
global warming. We all know that tree roots do a great job of keeping soil firmly on the ground and out
of the wind"s power. The problem is that some of the dust clouds play an important part in soaking up
carbon dioxide.  
     Huge dust storms blow out over the oceans from dry parts of North Africa and Central Asia. Tons
of dust are lifted and left as a thin film over the ocean surface.  
     Dust from China is carried east and left in the Pacific Ocean. If a treeplanting programme is
successful and the dust supply reduced, the next result may be that less carbon dioxide gets locked
away in the ocean.  
     Andy, an environmental scientist, has spent the past few years studying dust and says his work
shows clearly the complexity of the system. For this reason the need is to focus on cutting carbon
dioxide giving off rather than doing anything else.  
     Robert, an American scientist, has shown that when native grassland areas are invaded by trees,
carbon is lost from the soil. "We are studying why the soil carbon disappears, but one theory is that
trees do a lot more of their growing above ground compared to grass, so less carbon goes directly
into the soil from trees." said Robert.  
     In wet areas of the world, the gain from trees absorbing carbon dioxide above ground seems to
be outweighed by the loss of carbon from the soil below ground.  
     Countries that plan to fight against global warming by planting trees may have to think again. 
Solutions to environmental problems are often more complex than they first appear, and understanding
the Earth"s climate is a very great challenge.  1. People usually hold the opinion that________.  A. huge dust storms can destroy carbon dioxide
B. planting trees could reduce global warming
C. huge dust storms can destroy the oceans on the Earth
D. planting trees is the only way to control huge dust storms2. Andy, an environmental scientist, believes that________.  A. environmental problems are more complex than expected
B. trees shouldn"t have been planted in dry places
C. dust plays a more important part than trees
D. carbon dioxide is harmful to everything3. Robert"s experiment proves that________.  A. trees absorb more carbon than grass
B. carbon can turn grass into dust
C. less carbon can make trees grow faster
D. grassland areas should be covered by forests4. The best title for this passage is "________".  A. The importance of planting trees
B. The dust clouds soak up carbon dioxide
C. Is it really useful to plant trees to reduce global warming?
D. Why the soil carbon disappears?
答案
1-4: BAAC
举一反三
阅读理解     China_is_going_green. In order to reduce air pollution and oilshortages, automobile manufacturers
have announced their plans to develop hybrid vehicles (混合燃料汽车) for the Chinese market.
Toyota"s hybrid car Prius will be ready to drive in China this week. Let"s have a look at the new car.
     Any vehicle is a hybrid when it combines two or more sources of power. Hybrid cars run off a
rechargeable battery and gasoline. Hybrid cars have special engines, which are smaller than traditional
gasoline engines. They run at 99 percent of their power when the car is cruising (匀速行驶). A specially
designed battery motor provides extra power for running up hills or when extra acceleration is needed.
     Step into a Prius, and turn on the engine. The first thing you notice is how much quieter it is than a
traditional car. At this point, the car"s gasoline engine is dormant (休眠). The electric motor will provide
power until the car reaches about 24 km/h. If you stay at a low speed, you are effectively driving an
electric car, with no gasoline being used, and no waste gas gives off.
     The onboard(车载的) computer makes the decision about when to use a gas engine, when to go
electric, and when to use a combination of the two. If you go over 24 km/h, when you step on the gas
pedal (油门), you are actually telling the computer how fast you want to go.
     The electronic motor recharges automatically using a set of batteries. When driving at high speed, the
gasoline engine not only powers the car, but also charges the batteries. Any time you use the brake, the
electric motor in the wheels will work like a generator and produce electricity to recharge the batteries.
As a consequence, the car"s batteries will last for around 200,000 miles.

1. The author writes this passage mainly to________.
A. teach people how to drive a hybrid car
B. introduce a new kind of "green" car
C. show how to save their gasoline when driving a car
D. announce plans to develop hybrid vehicles for China

2. The first sentence probably refers to ________.
A. there will be more and more green land in China
B. China is still young and lacking experience
C.China"s new cars are combinations of different green models
D. China has started producing environmentally friendly cars

3. Which of the followings is NOT true?
A. The hybrid cars reduce air pollution and oilshortages.
B. The car"s gasoline engine doesn"t work until it reaches about 24 km/h.
C. This kind of car is completely controlled by an onboard computer.
D. A specially designed battery motor provides extra power when needed.

4. What is the most important feature of hybrid cars?
A. They are powered by both a rechargeable battery and gasoline.
B. They are much quieter than traditional cars.
C. They only use 99 percent of their power to run up hills.
D. They have smaller engines than traditional gasoline ones.

5. What can we conclude from the story?
A. The batteries can be recharged at any time you want.
B. Using the brake suggests that the gasoline engine should work.
C. The batteries will last for 200, 000 miles without being recharged.
D. The gasoline engine charges the batteries as well as powers the car.
题型:广东省同步题难度:| 查看答案
     The World Health Organization says obesity rates are rising in Pacific island countries. So, too, are
health problems linked to being overweight.
     The WHO says a major reason for the rising obesity rates is an increase in imported foods. It says
many Pacific islanders have replaced their traditional diets of vegetables and fruits with imported
processed foods.
      Dr. Temu Waqanivalu is with the World Health Organization"s South Pacific office in Suva, Fiji. He
says many of the imported products lack nutritional value.
     Temu Waqanivalu said: "In some of the places, you"d be amazed to see how a bottle of Coke is
cheaper than a bottle of water. I think that represents the kind of offenvironment we"ve created that
doesn"t really encourage or make lifestyle choices an easy choice for the population."
     And a lack of physical activity among many Pacific islanders only adds to the obesity problem.
     The WHO says more than 50 percent of the population is overweight in at least ten Pacific island
countries. The rate is as high as 80 percent among women in the territory of American Samoa. Fiji had
the lowest obesity rate at 30 percent.
     In all, almost ten million people live in Pacific island countries. The WHO estimates that about 40
percent of them have health disorders related to diet and nutrition.
     Diabetes rates are among the highest in the world. Fortyseven percent of the people in American
Samoa have diabetes. So do 44 percent of the people in Tokelau, a territory of New Zealand.
     By comparison, the diabetes rate is 13 percent in the United States, a country that has its own
problems with rising obesity.
     Officials also note an increase in nutritional problems like anemia and not enough vitamin A in the
diets of Pacific islanders. Dr. Waqanivalu says treating conditions related to obesity and diet puts
pressure on limited health resources and budgets.1. The main reason why obesity rates are rising in many Pacific islanders is ________.A. the change of society
B. the change of eating habits
C. the change of life style
D. lack of exercise2. Imported products lack nutritional value but people love to buy them because ________.A. they are cheap
B. they are popular
C. they are tasty
D. they are convenient to get3. How many people living in Pacific island countries have health disorders?A. 1 million.  
B. 4 million.
C. 6 million.  
D. 10 million.4. The percentage of diabetes rates in American Samoa is ________.A. optimistic  
B. steady
C. worrying  
D. low5. If the passage appears in a newspaper, which column will it be?A. Science.  
B. Nature.
C. Entertainment.  
D. Health.
题型:广东省同步题难度:| 查看答案
阅读理解     China_is_going_green. In order to reduce air pollution and oilshortages, automobile manufacturers
have announced their plans to develop hybrid vehicles (混合燃料汽车) for the Chinese market.
Toyota"s hybrid car Prius will be ready to drive in China this week. Let"s have a look at the new car.
     Any vehicle is a hybrid when it combines two or more sources of power. Hybrid cars run off a
rechargeable battery and gasoline. Hybrid cars have special engines, which are smaller than traditional
gasoline engines. They run at 99 percent of their power when the car is cruising (匀速行驶). A specially
designed battery motor provides extra power for running up hills or when extra acceleration is needed.
     Step into a Prius, and turn on the engine. The first thing you notice is how much quieter it is than a
traditional car. At this point, the car"s gasoline engine is dormant (休眠). The electric motor will provide
power until the car reaches about 24 km/h. If you stay at a low speed, you are effectively driving an
electric car, with no gasoline being used, and no waste gas gives off.
     The onboard(车载的) computer makes the decision about when to use a gas engine, when to go
electric, and when to use a combination of the two. If you go over 24 km/h, when you step on the gas
pedal (油门), you are actually telling the computer how fast you want to go.
      The electronic motor recharges automatically using a set of batteries. When driving at high speed,
the gasoline engine not only powers the car, but also charges the batteries. Any time you use the brake,
the electric motor in the wheels will work like a generator and produce electricity to recharge the batteries.       As a consequence, the car"s batteries will last for around 200,000 miles.

1. The author writes this passage mainly to________.
A. teach people how to drive a hybrid car
B. introduce a new kind of "green" car
C. show how to save their gasoline when driving a car
D. announce plans to develop hybrid vehicles for China

2. The first sentence probably refers to ________.
A. there will be more and more green land in China
B. China is still young and lacking experience
C. China"s new cars are combinations of different green models
D. China has started producing environmentally friendly cars

3. Which of the followings is NOT true?
A. The hybrid cars reduce air pollution and oilshortages.
B. The car"s gasoline engine doesn"t work until it reaches about 24 km/h.
C. This kind of car is completely controlled by an onboard computer.
D. A specially designed battery motor provides extra power when needed.
题型:江苏同步题难度:| 查看答案
     "In only six days I lost seven pounds of weight."
     "Two full inches in the first three days!"
     These are the kinds of statements used in magazine, newspaper, radio and television ads, promising
new shapes and new looks to those who buy the medicine or the device. The promoters of products say
they can shape the legs, slim the face, smooth wrinkles, or in some other way to add to beauty or
desirability.
     Often such products are nothing more than moneymaking things for their promoters. The results they
produce are questionable, and some are dangerous to health.
     To understand how these products can be legally promoted to the public, it is necessary to
understand something of the laws covering their regulation. If the product is a drug, FDA(Food and Drug
Administration)can require proof under the Food, Drug, and Cosmetic Act that is safe and effective
before it is put on the market. But if the product is a device, FDA has no authority to require
premarketing proof of safety or effectiveness. If a product already on the market is a danger to health,
FDA can request the producer or distributor to remove it from the market voluntarily, or it can take
legal action, including seizure(查封)of the product.
     One notable case a few years ago involved an electrical device called the Relaxacisor, which had
been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through
contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds
that it was dangerous to health and life.
     Obviously, most of the devices on the market have never been the subject of court proceedings
(法律诉讼), and new devices appear continually. Before buying, it is up to the consumer to judge the
safety or effectiveness of such items.1. It can be inferred that the ads mentioned in the text are________.A. objective  
B. costly
C. unreliable  
D. illegal2. Which of the following is TRUE according to the text?A. The court is in charge of removing dangerous products.
B. New products are more likely to be questionable.
C. The production of a device must be approved by FDA.
D. The promoters usually just care about profits.3. FDA can ask for the proof of safety and effectiveness of a product________.A. if it is a drug
B. if it is a device
C. if its consumers make complaints
D. if its distributors challenge FDA"s authority
题型:江苏同步题难度:| 查看答案
     Christopher Thomas, 27, was a writer by night and a teacher by day when he noticed he was
always tired and was losing weight fast. Diagnosed with diabetes(糖尿病), Thomas would need to
inject himself with insulin(胰岛素) three times a day for the rest of his life or risk nerve damage,
blindness, and even death.   And if that weren"t bad enough, he had no health insurance.
     After a month of feeling upset, Thomas decided he"d better find a way to fight back. He left Canton,
Michigan for New York, got a job waiting tables, nicknamed himself the Diabetic Rockstar, and
created diabeticrockstar.com, a free online community for diabetics and their loved ones-a place where
over 1,100 people share personal stories, information, and resources.
     Jason Swencki"s son, Kody, was diagnosed with diabetes at six. Father and son visit the online
children"s forums(论坛) together most evenings. "Kody gets so excited, writing to kids from all over," 
says Swencki, one of the site"s volunteers. "They know what he"s going through, so he doesn"t feel
alone."
     Kody is anything but alone: Diabetes is now the seventh leading cause of death in the United States,
with 24 million diagnosed cases. And more people are being diagnosed at younger ages.
     These days, Thomas"s main focus is his charity(慈善机构), Fight It, which provides medicines and
supplies to people-225 to date-who can"t afford a diabetic"s huge expenses. Fight-it.org has raised
about $ 23,000-in products and in cash. In May, Thomas will hold the first annual Diabetic Rockstar
Festival in the Caribbean.
     Even with a staff of 22 volunteers, Thomas often devotes up to 50 hours a week to his cause, while
still doing his fulltime job waiting tables. "Of the diabetes charities out there, most are putting money into
finding a cure, " says Bentley Gubar, one of Rockstar"s original members. "But Christopher is the only
person I know saying people need help now."1. Which of the following is TRUE of Christopher Thomas?A. He needs to go to the doctor every day.
B. He studies the leading cause of diabetes.
C. He has a positive attitude to this disease.
D. He encourages diabetics by writing articles.2. Diabeticrockstar.com was created for ________.A. diabetics to communicate
B. volunteers to find jobs
C. children to amuse themselves
D. rock stars to share resources3. According to the text, Kody ________.A. feels lonely because of his illness
B. benefits from diabeticrockstar.com
C. helps create the online kid"s forums
D. writes children"s stories online
题型:江苏同步题难度:| 查看答案
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