题目
题型：江苏模拟题难度：来源：
sighted, a research shows. It challenges (挑战) the belief that short-sightedness is caused by computer use,
watching TV or reading in weak light.
The Australian government researchers believe that sunlight is good for people"s eyes. They compared
the vision (视力) and habits of 100 seven-year-old children in Singapore and Australia. In all, 30% of the
Singaporean children were short-sighted-this rate (比率) was ten times higher than Australian children.
Both groups spent a similar amount of time reading, watching television and playing computer games.
However, the Australian children spent an average (平均) of two hours a day outdoors-90 minutes more
than the Singaporean children.
Professor (教授) Ian Morgan, from the Australian Research Council"s Vision Centre, said, "Humans are
naturally long-sighted, but when people begin to go to school and spend little or no time outdoors, the number
of short-sighted people gets larger. We"re also seeing more and more short-sighted children in cities all around
the world-and the main reason may be that city children spend less time outdoors."
Daylight can be hundreds of times brighter than indoor light. But why does playing outside prevent us from
becoming short-sighted? Scientists believe that natural light has a special chemical (化学物质) which stops
the eyeball from growing out of shape and prevents people becoming short-sighted. So be outdoors. It doesn"t
matter if that time is spent having a picnic or playing sports.
B. 90 minutes.
C.1 hour.
D. 30 minutes.
B. Why natural light has a special chemical.
C. Why playing outside is good for one"s eyesight.
D. Why daylight is much brighter than indoor light.
B. Playing outdoors for 2 or 3 hours every day can help protect your eyesight.
C. Children in Australia are more likely to get short-sighted than those in Singapore.
D. If you spend two or three hours playing outside each day, you won"t get short-sighted.
答案
核心考点
试题【阅读理解。 Spending two or three hours playing outdoors each day can reduce a chi】；主要考察你对科普环保类等知识点的理解。[详细]
举一反三
environment. So they set up Earth Day to tell everyone about their worries.
In 2007 organizers m over 150 countries planned over 4,000 big events. But Earth Day is not just about
marches (游行) and big events. In the week around Earth Day (22 April) there were many thousands of
smaller, local events. These events dealt with environmental problems in the neighborhood.
The World Wide Fund for Nature made a list of 5 things that each person could do to save the environment.
* Don"t leave the tap running.
* Turn off lights when you leave a room.
* Turn off your computer every night.
* Wash your clothes, and yourself, in warm or cold water, not hot water.
* Dishwashers use as little water as possible. If we all do at least 2 0f these all the time, we can make a big
difference.
________________________________________________________________________________
2. When is Earth Day?
________________________________________________________________________________
3. What should people do when the water keeps running from a tap?
________________________________________________________________________________
4. Does the word "dishwashers" mean "machines for washing dishes"?
________________________________________________________________________________
5. Besides the five, what else can you do to save our environment? (One example is OK.)
________________________________________________________________________________
warns that a new flu pandemic (世界性的流感) is coming. How do such diseases go round? Some diseases
go round in one way. Some in many ways.
For example, the virus (病毒) that make you catch a cold can travel from one person to another through
cough. They are breathed in with the air. That is a good idea to stay away from people who have a cold. What
seems to be a cold may be the beginning of some more serious diseases.
Virus travel from one person to another in many ways. Some diseases are carried by insects, such as flies
and mosquitoes (蚊子).
Larger animals can also carry diseases. People can get diseases from dogs or even rabbits. At one time
many people got TB (肺结核) by drinking milk form cows that had the disease. Today, milk is made safe. The
milk is heated and made cold.
( )2. When you catch a cold, you don"t need to stay away from people.
( )3. A cold may cause some other serious diseases.
( )4. Flies are useful insects because they can carry some diseases to people.
( )5. If a person drinks the milk which is from a sick cow, he may have the disease as well.
the (2)_____, there will be less pollution in the air. There will be more (3)_____ for parking cars in cities, and
the streets will be less crowded. Three such cars park in the space that is needed for one of today"s cars.
The little cars will be very cheap. They will be very safe, too, because these little cars can go at a (4)_____
of only 65 kilometers per hour.
The cars of the future will be fine for getting around a city, but they will not be useful for long trips. If the
car is powered by electricity, it will have two batteries-one battery (蓄电池) for the motor and the other for the
lights, signals, etc. If the little cars run on gasoline (汽油), they will go 450 kilometers before they need to stop
for more gasoline.
If big cars are still used along with the small ones. We must (5)_____ two sets of roads, one for the big,
(6)_____ cars and the other for the (7)_____, slow ones.
(2). In the space for one of today"s cars we will be able to park ______.
(3). The cars of the future will be fine for ______.
(4). If small cars are used along with today"s big ones, we must build two sets of ______.
and man can not make food from air, water and sunlight. Animals can get their food by eating plants and
animals. Man gets his food by eating plants and animals, too. So animals and man need plants in order to
live. This is why there are so many plants around us.
There are two kinds of plants: flowering plants and non-flowering plants. You can know some trees
from their flowers and fruits. Non-flowing plants do not grow flowers. You can not see many non-flowering
plants around you.
If you look carefully at the plants around us, you will find that there are many kinds of plants. Some
plants are large and some are small. Most of them are green. Thanks to (多亏了) the plants around us we
can live on the earth.
B. Plants.
C. Animals.
D. Flowers.
B. plants are green
C. we can get what we need from plants
D. we like all kinds of-plants
B. more
C. larger
D. better
B. Animals get their food only from eating smaller animals.
C. We know all trees from their flowers.
D. Most of plants are green.
B. Plants and Man
C. Man and Animals
D. Plants around Us
to our health. The USDA has prepared a food guide to help people learn about which kind of food is the
healthiest to eat. The food guide describes six main food groups: meat ( like fish and chicken), dairy ( like
milk and cheese),grains (like bread and rice),fruit, and vegetables. The last group is fats and sweets. The
USDA also suggests how much of each food group is healthy to eat daily. Though this guide was prepared
by the US government, it is very useful for people all over the world.
(1) As a result of years of study, we know that too much animal fat is bad for our health. For example,
Americans eat a lot of meat and only a small amount (量) of grains, fruit and vegetables. Because of the way
they eat, they have a high rate (率) of cancer and heart disease. In Japan, people eat large amounts of grains
and very little meat. The Japanese also have a very low rate of cancer and heart disease. The Japanese live
longer than anyone else in the world. However, when Japanese people move to the US, the rate of heart disease
and cancer goes up as their eating habit changes. And as hamburgers, ice creams and other high-fat foods
become popular in Japan, the rate of heart disease and cancer is going up there as well. (2) People are also
eating more meat and dairy food in other countries, in those countries the disease rate is going up with the
change of people"s eating habit. Doctors everywhere suggest people eat more grains, fruit and vegetables and
less meat and dairy food.
(3) Eating healthily is important for children as well as their parents. When parents have poor eating habits,
their children usually do, too. After all, children eat the same way as their parents. When parents eat healthy
food, the children will learn to enjoy it, too. Then they will develop good eating habits. Doctors suggest parents
give their children healthier food such as fruit, vegetables and juice.
Everyone wants to live a long, healthy life. We know that the food we eat affects (影响) us in different
ways. For example, doctors believe that fruit and vegetables can really protect people from many different
diseases. On the other hand, animal fat can cause (引起) diseases. We can change our eating habits now and
enjoy many years of healthy living.
___________________________________________
2. 将(2)处的句子改写为含定语从句的句子。
___________________________________________
3. 将(3)处的句子改写成同义句。
___________________________________________
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