题目内容
—Is using a mobile phone harmful to people’s health?
—Scientists ________ this problem, and no exact conclusion has been drawn yet.
A. have studied B. were studying
C. have been studying D. had been studying
【解析】选D。考查as. . . as. . . 结构。句意为:到目前为止他们拥有的设备与我们拥有的一样多。equipment是不可数名词,不能用many修饰,所以可排除A、C两项。根据句意可知正确选项为D。
Now we can see a man and his wife at the breakfast table. They are not speaking to each other. They haven’t spoken to each other at the breakfast table for years. The husband is reading his newspaper. We can’t see his face. The wife looks very worried as she gets a cup of tea ready for him. Today she is using a new kind of tea for the first time. The husband picks up his cup. He isn’t interested. He tastes his tea. Suddenly he puts down his newspaper. Something is different! Can it be the tea? He takes another taste. It’s wonderful. He smiles. He looks at his wife and says in surprise, “Doris, when did you cut your hair?” Doris is pleased. She answers, “Two months ago.” Doris asks, “ Herbie , when did your hair begin to become white?” He answers, “A long time ago.” Doris says, “We have been together for many years, but we never cared about each other.” Now they aren’t worried any longer. Breakfast is different. Has a new kind of tea changed their lives?
【小题1】This story happens______________________.
| A.before breakfast | B.after breakfast |
| C.at home | D.in a teahouse |
| A.Doris is drinking tea | B.Herbie likes the new kind of tea |
| C.Doris is reading a newspaper | D.Herbie is very young and good-looking |
| A.a wonderful | B.an unhappy |
| C.an enjoyable | D.a friendly |
| A.They are good friends. | B.They have just got married. |
| C.They like to talk about their hair. | D.They are no longer young. |
Below is a selection from a popular science book.
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If blood is red, why are veins (静脉) blue? Actually, veins are not blue at all. They are more of a clear, yellowish color. Although blood looks red when it’s outside the body, when it’s sitting in a vein near the surface of the skin, it’s more of a dark reddish purple color. At the right depth, these blood-filled veins reflect less red light than the surrounding skin, making them look blue by comparison. Which works harder, your heart or your brain? That kind of depends on whether you’re busy thinking or busy exercising. Your heart works up to three times harder during exercise, and shifts enough blood over a lifetime to fill a supertanker(超级油轮). But, in the long run, your brain probably tips it, because even when you’re sitting still your brain is using twice as much energy as your heart, and it takes four to five times as much blood to feed it. Why do teeth fall out, and why don’t they grow back in grown-ups? Baby (or “milk”) teeth do not last long; they fall out to make bigger room for bigger, stronger adult teeth later on. Adult teeth fall out when they become damaged, decayed(腐烂)and infected by bacteria. Once this second set of teeth has grown in, you’re done. When they’re gone, they are gone. This is because nature figures you’re set for life, and what controls regrowth of your teeth switches off. Do old people shrink(收缩)as they age? Yes and no. Many people do get shorter as they age. But, when they do, it isn’t because they’re shrinking all over. They simply lose height as their spine (脊柱) becomes shorter and more curved due to disuse and the effect of gravity (重力). Many (but not all) men and women do lose height as they get older. Men lose an average of 3-4 cm in height as they age, while women may lose 5 cm or more. If you live to be 200 years old, would you keep shrinking till you were, like 60 cm tall, like a little boy again? No, because old people don’t really shrink! It is not that they are growing backwards—their legs, arms and backbones getting shorter. When they do get shorter, it’s because the spine has shortened a little. Or, more often, become more bent and curved. Why does spinning make you dizzy)? Because your brain gets confused between what you’re seeing and what you’re feeling. The brain senses that you’re spinning using special gravity-and-motion-sensing organs in your inner ear, which work together with your eyes to keep your vision balance stable. But when you suddenly stop spinning the system goes out of control, and your brain thinks you’re moving while you’re not. Where do feelings and emotions come from? Mostly from an ancient part of the brain called the limbic system(边缘系统). All mammals have this brain area — from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear, pain and pleasure. But since human feelings also involve other, newer bits of the brain, we feel more complex emotions than any other animal on this planet. If exercise wears you out, how can it be good for you? Because our bodies adapt to everything we do to them. And as far as your body is concerned, it’s “use it, or lose it”! It’s not that exercise makes you healthy, it’s more that a lack of exercise leaves your body weak and easily affected by disease. |
1.What is the color of blood in a vein near the surface of the skin?
A. Blue B. Light yellow
C. Red D. Dark reddish purple
2.Why do some old people look a little shrunken as they age?
A. Because their spine is in active use.
B. Because they are more easily affected by gravity.
C. Because they keep growing backwards.
D. Because their spine becomes more bent.
3.Which of the following statements about our brain is true?
A. In the long run, our brain probably works harder than our heart.
B. When our brain senses the spinning, we will feel dizzy.
C. The brains of the other mammals are as complex as those of humans.
D. Our feelings and emotions come from the most developed area in our brain.
4.What is the main purpose of the selection?
A. To give advice on how to stay healthy.
B. To provide information about our body.
C. To challenge new findings in medical research.
D. To report the latest discoveries in medical science.
Group buying is one of the fastest growing trends in South Africa today. Industry leaders are confident the growth potential remains strong since group buying is location-specific. Start-up costs are low and profit room remains high, so many sites continue to receive invested money despite widespread criticism and Facebook’s decision to phase out of deal business due to privacy concerns.
In the early stages of all industries, some companied fail because they cannot compete with stronger companies in difficult economic conditions. To deal with difficult conditions, an alarming number of businesses are developing group buying websites in places like China and India, so the increase of group buying in South Africa is nothing more than a natural progression into the international mainstream.
The group buying concept is fairly new and consumers have accepted this concept because they can now make full use of the rich information available on the Internet. Group buying is convenient and easy so it works. Anyone can view a site, join a mailing list, subscribe to RSS or print out a coupon(优惠券). The current group buying structure offered by the industry leaders works although there are still challenges to overcome.
Perhaps, the future of group buying is tied to the joining together of social media and mobile devices. Mobile devices are with us wherever we go and almost everyone is using some type of social media site like Facebook or Twitter to stay informed. Using GPS and social media technology to provide real time location-specific promotions would be beneficial to every consumer looking for the best deals in town.
Pause for a moment and think about it! What is better than signing on to your phone while having fun in town and you receive a real time information that your favorite shop across the street is offering a killer dial?
The future of the group buying in South Africa is bright and we can expect to see more advanced approaches to this concept in the future. In addition to the technological advances consumers will see the range of promotions expand to include new products and services.
1.What does the underlined phrase “phase out of” mean in the passage?
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A.Gradually stop |
B.Gradually increase |
C.Begin to develop |
D.Continue to enlarge |
2.The author sets China and India as examples to show that .
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A.China and India are powerful countries |
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B.China and India are in difficult economic conditions |
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C.group buying is successful worldwide |
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D.group buying is an international trend |
3. Which of the following is true according to the passage?
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A.People have accepted group buying because it’s a new concept |
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B.Social media and mobile devices have been joined |
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C.GPS and social media technology will be helpful in group buying |
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D.Shops usually offer a killer deal when their customers are having fun |
4.The author’s attitude towards the future of group buying is .
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A.pessimistic |
B.optimistic |
C.objective |
D.subjective |
5.What does the passage mainly tell us?
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A.The history of group buying |
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B.Group buying in South Africa |
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C.The feature of group buying |
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D.The group buying concept |