The food we eat seems to have a great effect on our health. Although science has made big steps in
making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has
shown that perhaps eighty percent of human illness is related to food and forty percent of cancer is related
to food as well. That food is related to illness is not a new discovery. In 1945, some researchers realized
that things commonly used to keep colors in meats and other food additives caused cancer. Yet, these
additives remain in our food, and it is difficult to know which things on the wrappings of foods are helpful
or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to their animals,
and because of this, penicillin has been found in the milk of cows. Sometimes similar things are supplied to
animals not for their health, but just to make a profit. 
    The farmers are simply trying to fatten the animals in order to get a higher price on the market. Although
some countries have tried to control such things, the practice continues.

1. According to this passage, we can know _____.

A. perhaps most of human illness is caused by what we eat
B. perhaps most kinds of cancer are related to what people eat
C. cancer was discovered in 1945
D. science has made food unfit to eat

2. Things that are used to keep colors in meats are _____.

A. harmful
B. useless
C. helpless
D. dangerous

3. All the additives _____.

A. are bright and colorless
B. are not bright and colorful
C. have indirect effects on our health
D. have direct effects on our health

4. People use additives _____.

A. to make food more unfit to eat
B. to improve the color and taste of the food
C. to change the color of the food
D. to take off the diseases of the food

5. Which of the following is NOT true?

A. Some wrappings of food are harmful.
B. Farmers try to make more money on the market by fattening their animals.
C. "The practice continues" means "things are still going on like that".
D. We needn't take care of what we eat.

Dear Dr Health,
     I think too many people take weight-loss pills without really knowing that they can 1._______ their
health.
     I read about a Canadian actress 2._______ had to go to hospital because she took some weight-loss
pills. She lost 7 kg in two months. However, the pills 3._______ something that causes liver failure.
     Recently, my cousin read about a weight-loss pill and she really wants to try it. I've told her the story
of the 4. _______, but she won't listen. She's only 12, but has become a girl who is worried 5. _______
her figure and how she looks. She often refuses to eat. My aunt is worried that my cousin will buy the
pills in secret. She says health is priceless. She thinks that children must eat properly 6._______ they are
growing all the time.
     What am I to do? Please help me.
Yours truly,
Xiao Ming

    Trees are useful to man in three important ways: they give him wood and other useful things, they give him
cool places, and they help to stop drought and flood.
    Unluckily, in many parts of the world, man has not found that the third of these points is the most important.
Man wants to make money from trees,so he has cut them down in large numbers, only to find that without
them he has lost the best friends he had. And also, he is usually too careless to plant and look after new trees.
So the forests slowly disappear.
    This does not only mean that man will have fewer trees. The results are even worse: for where there are
trees, their roots break up soil-make the rain in-and also bind the soil, thus stopping it from being washed away
easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying
away the rich top-soil. When all the top-soil is gone, nothing is left but useless desert.

1. The most important points of trees to man is _____.

A. they help him to make money
B. they give him cool
C. they give him wood and other things
D. they help him to stop drought and floods

2. In many places forests slowly disappear because _____.

A. many trees have been cut down by man
B. new trees are not well looked after
C. man has not paid enough attention to planting trees
D. all the above

3. Land becomes desert after all trees are cut down because _____.

A. roots of trees break up the soil
B. there are too many rainfalls
C. strong winds bring a lot of sand
D. there are no longer trees to keep the rain and protect the top-soil.

4. Which title best fits the passage?

A. Trees and Man B.The Function of Tree Wood
C. How do People deal with Trees?
D. The Usage of Tree Roots

    Millions of years ago there were many types of dinosaurs on earth. Most dinosaurs were plant-eaters.
The Apatosaurus, for example, had a long thin neck so that it could eat leaves from trees. Other dinosaurs
were meat-eaters. The Tyrannosaurus Rex killed smaller dinosaurs for food.
    Dinosaurs were real animals that once lived on the earth, but they died out about 65 million years ago.
The disappearance of the dinosaurs is in some way a great mystery (谜). Some scientists think that the
climate (气候) changed suddenly. Fossils (化石) of trees tell us that the temperature dropped a lot and that
the level of the sea dropped as well. This means that it got suddenly much colder. Perhaps the dinosaurs
were too slow to change with the climate.
    A new idea is that a meteor (流星) crashed into the earth. Scientists discovered a place in Mexico where
they think the meteor crashed. They think that there was a lot of dust from the meteor. The dust landed on
the plants.Also the dust blocked (阻挡) the sun's light for as long as five years. Many animals, including
dinosaurs, were plant-eaters, and perhaps the dust killed them. This means there was nothing left for meat-
eating dinosaurs to eat, and so they died out. But, as many animals from that time didn't die, we are not 100%
sure what really happened.

1. What is the subject discussed in the text?

A. Dinosaurs, the real animals living millions of years ago.
B. The two types of dinosaurs.
C. The probable reasons for dinosaurs disappearance.
D. A meteor crashed into the earth.

2. What are the two possible explanations to the dinosaurs disappearance?

A. Temperature dropping and sea level dropping.
B. Climate changing and meteor's crashing.
C. The dropping of temperature and sea level.
D. Climate changing and the dust blocking the sun.

3. What is the direct cause of the disappearance of meat-eating dinosaurs?

A. A meteor's crashing.
B. The dust blocking the sun.
C. The plant-eating dinosaurs death.
D. It is still unknown.

    Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many
people on the island had a disease called beri-beri. He was going there to try and find
a cure.
    At first, Eijkman thought some kind of germ (细菌) caused beri-beri. He raised some
chickens. He didn't eat them, but made experiments on them. The local people were quite
surprised at that. One day he noticed that his chickens became sick when they were fed
the food most Javanese ate-refined white rice (精炼米). When he fed them with unrefined
rice, also known as brown rice, they recovered. Eijkman realized that he had made an
important discovery - that some things in food could prevent disease. These things were
named vitamins (维生素). The Javanese were not getting enough vitamins because they had
actually removed the part that contains vitamins. Later, other diseases were also found
to be caused by the lack of vitamins in a person's food.
    Today many people know the importance of vitamins and they make sure they have enough
vitamins from the food they eat. If they don't, they can also take vitamin pills.

1. The underlined word "cure" in Paragragh 1 probably means ______.

A. a medical treatment
B. a kind of vitamin
C. a kind of germ
D. a kind of rice

2. Christian Eijkman went to the island of Java to ______.

A. spend his holiday
B. find ways to grow better crops
C. do some research about the island
D. help the Javanese with their illness

3. Why did Christian Eijkman raise some chickens?

A. To eat them.
B. To carry out his experiments.
C. To give the Javanese a surprise.
D. To make money by selling them.

4. We can learn from the passage that ______.

A. beri-beri was caused by chickens
B. the Javanese didn't like vitamins
C. Christian Eijkman's experiment was successful
D. the Javanese's disease was caused by a kind of germ

    _________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________

    Not long ago, a girl called Daisy took a magic 1.______ around the world, riding a
flying chair. First, she came to Tibet in China to visit antelopes. But to her great
2._____, she could only see mountains and people.
    Then an antelope told her 3.______ that they were being killed 4.______ large numbers
by humans for their wool to make clothing. And they might be 5._______ forever in three
years. Then the flying chair took Daisy to Zimbabwe, 6.______ wildlife was properly
protected. Daisy was glad to learn that farmers there were not killing the animals at
will as they 7._____ to. Only a certain number of the animals were set to be 8.______ for
fee by the government, 9.______ not only saved the animals but benefited the farmers as
well.
    At last, Daisy flew to a 10.______ rainforest. There she was puzzled to see a monkey
11.______ (rub) a millipede insect over its body. Then the monkey told her the insect
contained a 12._______ drug which affected mosquitoes and 13._______ rubbing it over the
body it could 14._______ itself from mosquitoes. Now Daisy was amazed and excited to find
in fact the forest 15._______ a lot of precious things people can make use of. So
protecting nature really means much to our humans.