Which of the following is not mentioned in the passage as one of the possible causes of why giving can save your life? A. Giving produces positive emotions. B. Helping others protects us against the negative effects of cardiovascular stress. C. Giving means getting in a manner of speaking. D. Giving strengthens our relations with others and makes us feel good. Passage 82 The origin of Aids Nothing comes of nothing, and so AIDS must come from something and, indeed, somewhere. A paper just published in nature provides what appear to be the answers to these questions. The disease spread to people from chimpanzees in equatorial Africa. This result comes as little surprise. It has been known for years that HIV-S (the type of human immunodeficiency virus which causes most cases of AIDS) is, in effect, just another simian(猿) immunodeficiency of the sort that infect monkeys and apes. It was also known the AIVs most closely resembling HIV-1 are found in chimpanzees. (Another human AIDS virus, not that closely related, and known as HIV-2, comes from a monkey called the first cases of AIDS, including one that dated back to 1959 but was properly analyzed only a year ago, came from Africa, the strong presumption is that Africa is where the disease started. But chimpanzee SIVs are. Until now, only three had been identified in laboratory animals of uncertain provenance. The discovery of the fourth case, by a team of researchers from America, Britain and France, led by Beatrice Hahn of the University of Alabama at Birmingham-together with a more detailed investigation of where each of the apes in question came from has cleared the details up. The genetic material of the four chimpanzee SIVs suggests that three of them, including the new one, are closely related. The fourth belongs to a different branch of the SIV family tree. And by analyzing genes from the chimpanzees themselves, Dr. Hahn and her colleagues have shown that the three related SIVs come from a subspecies that lives mainly in Gabon, Cameroon and Equatorial Guinea. The outlying virus was found in a second sub-species that exists further east. It is probably no coincidence that the part of Africa where the related SIVs come from is the only place on earth where all three of the basic types of HIV-1-known as M, N and O-- are found. Fortunately for the rest of humanity, only type M has spread from its homeland. The other two are still confined locally. Analysis of the part of the SIV family tree containing the three related SIVs and the three basic types of HIV-1 shows that all six are close kin, and that the three types of HIV-1 seem to have had different origins within the western chimpanzee SIV group. That suggests the M, N and O strains each made an independent leap from chimp to man. Other than sexual contact, the only way to transmit these viruses is via blood. The best guess, therefore, is that AIDS has spread to man as a result of people hunting chimpanzees for food----a practice, often bloody, that continues to this day. Unfortunately, this hunting now risks exterminating the very population that infected humanity in the first place to find out why chimpanzees do not get ill from HIV-1, Where people do. Ironic, really. 查看更多

 

题目列表(包括答案和解析)

Throw out the bottles and boxes of drugs in your house.A new theory suggests that medicine could be bad for your health.This new theory argues that healing (the process of becoming healthy and strong again) is at our fingertips:we can be healthy by doing Reiki on a regular basis.

    Supporters of medical treatment argue that medicine should be trusted since it is effective and scientifically proven.They say that there is no need for spiritual methods such as Reiki, Yoga,Tai Chi.These waste our time,something that is quite precious in our material world.There is medicine that can kill our pain and x-rays that show us our broken bones.We must admit that these methods are very effective in the examples that they provide.However, there are some “everyday complaints”such as back pains,headaches,which are treated currently with medicine.When you have a headache,you take an Aspirin;when you cannot sleep,you take Xanax without thinking of the side effects of these.When you use these pills for a long period,you become dependent on them;you cannot sleep without them.We pay huge amounts of money but never get better.How about a safer and more economical way of healing?When doing Reiki to yourself,you do not need anything except your energy so it is very economical.Also,there are no side effects and it is scientifically explained.

    They also claim that serious illnesses such as HIV/AIDS and cancer cannot be treated without drugs.They think so because these patients spend the rest of their lives in the hospital taking medicine.How can Reiki make these people healthy again? It is very unfortunate that these patients have to live in the hospital losing their hair and weight because of the side effects of the medicine they take.Actually,instead of drugs which are expensive and have many side effects,you can use your energy to overcome the hardships of life,find an emotional balance,leave the stress of everyday life and let go of the everyday worries.

Some people may still hold that in our material world,everything depends on time.How

would it be possible to find time to do Reiki?In fact,Reiki does not require more than 15 minutes of our time.It is less time consuming than medicine if we think of all the time we spend taking medicine for some complaints and taking some more for the side effects as well.

The author's attitude towards Reiki is        

     A.uninterested            B.serious             

       C.positive                   D.doubtful

Which statement does the passage lead you to believe?

A.Reiki will soon become the most popular exercise around the world.

B.Reiki is an effective treatment but not scientifically explained.

C.Reiki can make people less dependent on drugs.

D.Reiki is a kind of cheap drug but works well.

How many advantages of Reiki are mentioned in the last two paragraphs?

A.One.     B.Three.          C.Five.              D.Seven.

Which of the following would be the best title for the passage? 

       A.A New Way of Treating Illness.            

       B.Health and Healing at Your Fingers.

       C.The Advantages and Disadvantages of Reiki.

       D.The Advantages and Disadvantages of Medicine.

查看答案和解析>>

Throw out the bottles and boxes of drugs in your house.A new theory suggests that medicine could be bad for your health.This new theory argues that healing (the process of becoming healthy and strong again) is at our fingertips:we can be healthy by doing Reiki on a regular basis.

Supporters of medical treatment argue that medicine should be trusted since it is effective and scientifically proven.They say that there is no need for spiritual methods such as Reiki, Yoga,Tai Chi.These waste our time,something that is quite precious in our material world.There is medicine that can kill our pain and x-rays that show us our broken bones.We must admit that these methods are very effective in the examples that they provide.However, there are some “everyday complaints”such as back pains,headaches,which are treated currently with medicine.When you have a headache,you take an Aspirin;when you cannot sleep,you take Xanax without thinking of the side effects of these.When you use these pills for a long period,you become dependent on them;you cannot sleep without them.We pay huge amounts of money but never get better.How about a safer and more economical way of healing?When doing Reiki to yourself,you do not need anything except your energy so it is very economical.Also,there are no side effects and it is scientifically explained.
They also claim that serious illnesses such as HIV/AIDS and cancer cannot be treated without drugs.They think so because these patients spend the rest of their lives in the hospital taking medicine.How can Reiki make these people healthy again? It is very unfortunate that these patients have to live in the hospital losing their hair and weight because of the side effects of the medicine they take.Actually,instead of drugs which are expensive and have many side effects,you can use your energy to overcome the hardships of life,find an emotional balance,leave the stress of everyday life and let go of the everyday worries.
Some people may still hold that in our material world,everything depends on time.How
would it be possible to find time to do Reiki?In fact,Reiki does not require more than 15 minutes of our time.It is less time consuming than medicine if we think of all the time we spend taking medicine for some complaints and taking some more for the side effects as well.
【小题1】The author's attitude towards Reiki is        

A.uninterestedB.serious
C.positiveD.doubtful
【小题2】Which statement does the passage lead you to believe?
A.Reiki will soon become the most popular exercise around the world.
B.Reiki is an effective treatment but not scientifically explained.
C.Reiki can make people less dependent on drugs.
D.Reiki is a kind of cheap drug but works well.
【小题3】How many advantages of Reiki are mentioned in the last two paragraphs?
A.One.B.Three.C.Five.D.Seven.
【小题4】Which of the following would be the best title for the passage? 
A.A New Way of Treating Illness.
B.Health and Healing at Your Fingers.
C.The Advantages and Disadvantages of Reiki.
D.The Advantages and Disadvantages of Medicine.

查看答案和解析>>

Throw out the bottles and boxes of drugs in your house.A new theory suggests that medicine could be bad for your health.This new theory argues that healing (the process of becoming healthy and strong again) is at our fingertips:we can be healthy by doing Reiki on a regular basis.

    Supporters of medical treatment argue that medicine should be trusted since it is effective and scientifically proven.They say that there is no need for spiritual methods such as Reiki, Yoga,Tai Chi.These waste our time,something that is quite precious in our material world.There is medicine that can kill our pain and x-rays that show us our broken bones.We must admit that these methods are very effective in the examples that they provide.However, there are some “everyday complaints”such as back pains,headaches,which are treated currently with medicine.When you have a headache,you take an Aspirin;when you cannot sleep,you take Xanax without thinking of the side effects of these.When you use these pills for a long period,you become dependent on them;you cannot sleep without them.We pay huge amounts of money but never get better.How about a safer and more economical way of healing?When doing Reiki to yourself,you do not need anything except your energy so it is very economical.Also,there are no side effects and it is scientifically explained.

    They also claim that serious illnesses such as HIV/AIDS and cancer cannot be treated without drugs.They think so because these patients spend the rest of their lives in the hospital taking medicine.How can Reiki make these people healthy again? It is very unfortunate that these patients have to live in the hospital losing their hair and weight because of the side effects of the medicine they take.Actually,instead of drugs which are expensive and have many side effects,you can use your energy to overcome the hardships of life,find an emotional balance,leave the stress of everyday life and let go of the everyday worries.

Some people may still hold that in our material world,everything depends on time.How

would it be possible to find time to do Reiki?In fact,Reiki does not require more than 15 minutes of our time.It is less time consuming than medicine if we think of all the time we spend taking medicine for some complaints and taking some more for the side effects as well.

1.The author's attitude towards Reiki is        

     A.uninterested            B.serious             

       C.positive                   D.doubtful

2.Which statement does the passage lead you to believe?

A.Reiki will soon become the most popular exercise around the world.

B.Reiki is an effective treatment but not scientifically explained.

C.Reiki can make people less dependent on drugs.

D.Reiki is a kind of cheap drug but works well.

3.How many advantages of Reiki are mentioned in the last two paragraphs?

A.One.     B.Three.          C.Five.              D.Seven.

4.Which of the following would be the best title for the passage? 

       A.A New Way of Treating Illness.            

       B.Health and Healing at Your Fingers.

       C.The Advantages and Disadvantages of Reiki.

       D.The Advantages and Disadvantages of Medicine.

 

查看答案和解析>>

In Finland, home of Nokia, which makes 30 percent of the mobile phones sold around the world, and veritable mobile phone capital of the world, a mobile phone is not just a phone. It is a credit card, a menu, a stock ticker, and an entertainment center. It is a multifunction server. It is a passport to the future. In the high-tech world of telephones, Finland clearly leads the world. By pressing their phone’s buttons and reading text messages on small screens, the Finns can tinnier money in their bank accounts, trade stocks, purchase products used daily, rent videos, buy movie tickets, order flowers, and pay for parking—all without ever talking to anyone, that is to say, without using a phone for its traditional purpose.

In a shopping center, you stand before a vending machine, and dial a number on your mobile phone. Seconds later, the food will fall on a shelf in the machine. It is a very easy way to get something to eat, the cost of which will show up on your mobile phone bill at the end of the month. In some restaurants, you dial a number after the waitress hands you your bill and get a receipt from the cashier. Mobile phones have become so important a part of life here that many people can not leave home without their phones. Nearly 80 percent of Finland’s five million people own mobile phones.

There are many more mobile phones than fixed ones in the country. That Finns describe themselves as perfect mobile phone users is not because they like to talk much but on the contrary. Finns are not very eager to talk. They are shy, but they are very eager to enjoy high-tech. Among teenagers, mobile phone ownership hits 100 percent. Many log on Web sites to download personalized music or pictures for their phones. Surveys show that Finns send an average of 25 messages a month on their mobile phones. Teachers have to ban the phones during exams to prevent cheating.

Mobile phones and related hand-held devices will make it technically possible to eliminate cash within ten years. Making that socially acceptable, however, may take longer. About 75 percent of all transactions in Finland are already performed with credit and debit cards. Except for mortgage(抵押) payments, which still require paperwork, mobile phones can perform any traditional banking function. Checks have not been used for at least five years. These provide a good start for mobile commerce. More and more people accept the mobile payment devices because of its fast and convenient service. Banks are beginning to join with enterprises to test a system that integrates(使一体化) the mobile payment devices with a cash register. Mobile commerce, as the theory goes, is entering people’s life step by step.

1. It can be concluded from the passage that ______.

A. mobile phones in Finland can perform all traditional banking functions

B. every teenager in Finland possesses a Nokia-brand mobile phone

C. Finns make full use of the cell phone

D. Finns are so active that they are eager to enjoy high technology

2. Which of the following is NOT mentioned when describing the multi-functions of mobile phones?

A. If one uses a mobile phone, he or she needn’t pay cash when shopping.

B. Mobile phones are so important that without it no Finns can leave home.

C. The cost of the food will show up on your cell phone at the end of the month.

D. In some other countries, cell phones are not made that multi-functional.

3. According to the passage, we can infer that ______.

A. in Finland, some students use cell phones to cheat in exams

B. Finn’s listening and speaking ability will degenerate

C. there are more fixed phones than mobile phones in Finland

D. mobile phones and related hand-held devices will eliminate cash within 10 years technically, meanwhile they will be accepted by the society

4. Which of the following statements is NOT true?

A. About four million Finns own cell phones.

B. Finland leads the world in the field of high-tech.

C. Checks have not been used for at least five years.

D. Finland is the home of “Nokia”.

 

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In Finland, home of Nokia, which makes 30 percent of the mobile phones sold around the world, and veritable mobile phone capital of the world, a mobile phone is not just a phone. It is a credit card, a menu, a stock ticker, and an entertainment center. It is a multifunction server. It is a passport to the future. In the high-tech world of telephones, Finland clearly leads the world. By pressing their phone’s buttons and reading text messages on small screens, the Finns can tinnier money in their bank accounts, trade stocks, purchase products used daily, rent videos, buy movie tickets, order flowers, and pay for parking—all without ever talking to anyone, that is to say, without using a phone for its traditional purpose.

In a shopping center, you stand before a vending machine, and dial a number on your mobile phone. Seconds later, the food will fall on a shelf in the machine. It is a very easy way to get something to eat, the cost of which will show up on your mobile phone bill at the end of the month. In some restaurants, you dial a number after the waitress hands you your bill and get a receipt from the cashier. Mobile phones have become so important a part of life here that many people can not leave home without their phones. Nearly 80 percent of Finland’s five million people own mobile phones.

There are many more mobile phones than fixed ones in the country. That Finns describe themselves as perfect mobile phone users is not because they like to talk much but on the contrary. Finns are not very eager to talk. They are shy, but they are very eager to enjoy high-tech. Among teenagers, mobile phone ownership hits 100 percent. Many log on Web sites to download personalized music or pictures for their phones. Surveys show that Finns send an average of 25 messages a month on their mobile phones. Teachers have to ban the phones during exams to prevent cheating.

Mobile phones and related hand-held devices will make it technically possible to eliminate cash within ten years. Making that socially acceptable, however, may take longer. About 75 percent of all transactions in Finland are already performed with credit and debit cards. Except for mortgage(抵押) payments, which still require paperwork, mobile phones can perform any traditional banking function. Checks have not been used for at least five years. These provide a good start for mobile commerce. More and more people accept the mobile payment devices because of its fast and convenient service. Banks are beginning to join with enterprises to test a system that integrates(使一体化) the mobile payment devices with a cash register. Mobile commerce, as the theory goes, is entering people’s life step by step.

1. It can be concluded from the passage that ______.

A. mobile phones in Finland can perform all traditional banking functions

B. every teenager in Finland possesses a Nokia-brand mobile phone

C. Finns make full use of the cell phone

D. Finns are so active that they are eager to enjoy high technology

2. Which of the following is NOT mentioned when describing the multi-functions of mobile phones?

A. If one uses a mobile phone, he or she needn’t pay cash when shopping.

B. Mobile phones are so important that without it no Finns can leave home.

C. The cost of the food will show up on your cell phone at the end of the month.

D. In some other countries, cell phones are not made that multi-functional.

3. According to the passage, we can infer that ______.

A. in Finland, some students use cell phones to cheat in exams

B. Finn’s listening and speaking ability will degenerate

C. there are more fixed phones than mobile phones in Finland

D. mobile phones and related hand-held devices will eliminate cash within 10 years technically, meanwhile they will be accepted by the society

4. Which of the following statements is NOT true?

A. About four million Finns own cell phones.

B. Finland leads the world in the field of high-tech.

C. Checks have not been used for at least five years.

D. Finland is the home of “Nokia”.

 

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