| ( )1. A. agree ( )2. A. excited ( )3. A. but ( )4. A. away ( )5. A. answers ( )6. A. follow ( )7. A. weakness ( )8. A. easily ( )9. A. difficult ( )10. A. protecting | B. mean B. satisfied B. and B. inside B. replies B. find B. laziness B. closely B. terrible B. exploring | C. doubt C. surprised C. so C. through C. ways C. advise C. happiness C. equally C. strange C. providing | D. notice D. stressed D. as D. against D. chances D. count D. richness D. hardly D. various D. imagining | |||
| 1. B 2. D 3. A 4. C 5. C 6. A 7. A 8. B 9. D 10. B | ||||||
| 阅读理解。 | ||||||
| You are probably familiar with the saying: An apple a day keeps the doctor away. A recent research carried out by the Chinese University of Hong Kong may change the saying: An apple a day may keep aging away. The research chose fruit flies (果蝇), as they share many genes (基因) with humans. The fruit flies were either fed normally or had an apple extract (浓缩物) added to their diet. It turned out that those fruit flies that were given apple extract lived about 55 days - five days longer than the flies that were normally fed. The research group also found it easier for the flies to walk, climb and move about as they aged. According to the result, the researchers believed that the antioxidants (抗氧化剂) in the apple extract helped clean up dangerous chemicals (化学物质) that cause illnesses, as well as aging. In another study, researchers examined diets of thousands of women. They discovered that those who regularly ate apples were 20 percent less likely to suffer heart illnesses and stroke. The apples" genetic code (***) was discovered recently. It allows scientists to develop nicer and healthier fruits. Researchers are already using the information to grow a kind of apples full of antioxidants that can keep eyes and joints healthy and protect humans against heart illnesses and cancer. Apples that kill the desire (***) to eat could also be produced, with the first "extra-healthy" apples on supermarket shelves within just four or five years. The team that keeps studying apple DNA includes 100 scientists from five countries. Their research also suggests that around 65 million years ago, when dinosaurs began to die off, the plant, which would finally become today"s apple tree, experienced a great genetic change. The number of many of its genes doubled. The extra genes allowed the apple to get used to worse conditions and go through a different development from peaches, strawberries and other related fruits. | ||||||
| 1. Why were fruit flies used for the research? | ||||||
| A. Because they have a similar diet to humans. B. Because they have a history as long as apples. C. Because they share a lot of genes with humans. D. Because they feed on nothing but apple extract. | ||||||
| 2. What result did the researchers find out? | ||||||
| A. Apples produce chemicals that can change human genes. B. Apples have antioxidants that kill chemicals that cause aging. C. Apples are rich in vitamins that are needed in humans" bodies. D. Apples produce chemicals that make apples taste more delicious. | ||||||
| 3. What happened to apples around 65 million years ago according to the research? | ||||||
| A. Their genes stopped their development as the environment got worse. B. Their genes became twice in number but they finally died off like dinosaurs. C. They experienced a great genetic change making them used to worse conditions. D. They went through a similar development to peaches, strawberries and other related fruits. | ||||||
| 4. What can we infer (推断) from the passage? | ||||||
| A. Eating apples may bring us more advantages than we might believe before. B. People who have the habit of eating apples don"t need to see a doctor. C. Apples that kill the desire to eat are already available in supermarkets now. D. People will eat apples instead of peaches and strawberries from now on. | ||||||
| 阅读理解。 | ||||||
| Every time you turn on the television or take a ride in a car,you could be adding to a problem called acid rain (酸雨). In this article, you"ll learn how acid is created, and how it affects us, and more importantly, what we all can do to prevent it. How is acid rain created? When people use fuels (燃料), such as coal and gasoline, poisonous gases are give off. When these gases mix with rain, acid rain forms. Many power stations burn fuels in order to creat the electricity (电) that we use in our homes and offices every day. Cars and trucks also send these gases into the air when they burn gasoline.When rain mixes with these gases, harmful things called acids form. This is acid rain. How does acid rain affect us? Acid rain damages (毁坏) everything that it touches. It poisons our rivers, ponds, lakes, and oceans along with all the life in them. It pollutes our soil and crops, harms trees, and can even kill fish and plants. Acid rain also eats away at buildings. How can we prevent acid rain? We need to cut down on the pollution that gets into our air. Turn off lights, television, and other electrical appliances if you are not using them, Walk or take a bike whenever possible. If you are travelling a long distance, take a bus or train to save fuel. As research shows, acid rain harms our environment. But people everywhere can take small steps now to help protect our environment for future generations. | ||||||
| 1. When power stations burn fuel, ______. | ||||||
| A. acid rain form B. air pollution is caused C. noise pollution is caused D. acid rain gets heavier | ||||||
| 2. According to the article, acid rain affects us ______. | ||||||
| A. suddenly B. slightly C. seriously D. immediately | ||||||
| 3. What advice does the article give us? | ||||||
| A. Go to school on foot or by bike if we can. B. Go to bed earlier in order to use less electricity. C. Travel by bus to prevent acid rain. D. Turn off the television on rainy days. | ||||||
| 4. What is the best title of the article? | ||||||
| A. Preventing Acid Rain B. Forming of Acid Rain C. Acid rain, Heavy Rain D. Acid Rain, Killer Rain | ||||||
| 阅读理解。 | ||||||
| There has been a lot of rain in California recently. Villagers and leaders there begin to be worried because they have found two birds died from a disease, West Nile Virus (病毒). West Nile Virus is carried by mosquitoes (蚊子).The symptoms (症状) are just like the flu. However, it can cause dangerous brain problems. When it rains a lot, it will leave a lot of water in ponds and trees. These places are good for mosquitoes. Mosquitoes lay their eggs in the water. Warm weather will help the mosquito eggs to develop and then the number is increasing. Birds eat the mosquitoes and get sick. People can get the disease if they are bitten (叮咬) by mosquitoes with West Nile Virus. The government is trying its best go stop the spread of West Nile Virus. People are asked to wear long sleeves (长袖) and pants, close their windows and shut the doors. At the same time, workers have been sent out to check the wet areas. If they find mosquitoes they will use some special medicine to kill them. | ||||||
| 1. Why did the two birds die? | ||||||
| A. They died from West Nile Virus. B. They could not get enough food. C. The villagers killed them. | ||||||
| 2. From the passage we know West Nile Virus is carried by ______. | ||||||
| A. flu B. mosquitoes C. water | ||||||
| 3. People will get the disease if ______. | ||||||
| A. they get wet in rainy days B. they are bitten by any mosquito C. they are bitten by mosquitoes with West Nile Virus | ||||||
| 4. People are asked to wear long sleeves and pants in order to ______. | ||||||
| A. keep warm B. check the wet areas C. avoid being bitten by mosquitoes | ||||||
| 完形填空。 | ||||||
| More and more people are becoming interested in the internet. They have formed a bad habit. In fact, the bad habit has become a 1 -Internet Addiction Disorder (IAD网络综合症). Staying 2 for more than six hours a day 3 working or studying, and feeling very upset from not being able to get online, are the two major symptoms (症状) of IAD. Internet addiction (上瘾) is 4 in China now. A recent research 5 that 42% of Chinese young people get quite interested in the web, while only 18% of Americans feel in the same 6 . What causes IAD? Some people believe that It"s the lack (缺乏) of family care. Most children in China are the 7 ones in their families. They are only told to 8 hard, but few really care about their personal interest. So some children would like to keep 9 away from the real world. How can people stay away from IAD? Don t get online any more, go back to the real world and if it doesn"t work, go to see the 10 . | ||||||
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