摘要:For the time being, at least, I see no scientific reason to stop using my own mobile phone. M7U2

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Research on the human brain has been attracting more and more scientists in recent years, just like the booming hi-tech industry. One of the latest research topics is how to change the human brain or combine the computer and the human brain, i.e. to transplant a chip into a human brain. This idea may make everyone’s dream come true. If we compare a human brain to a hard disc(硬盘), what the scientists are doing is to enlarge the capacity of the hard disc. For the time being, there are some difficulties in such transplant experiments, but scientists never give up.

Experiments have started on animals. In 1996, a transplant experiment performed at the Defense and Military Physiology Research Institute in the U.S. turned a bear into a dolphin.

The dolphin was named Ted, and the bear was named Tallin. Using the most advanced technology available, deep and detailed images were made of the memory area in Ted’s brain containing information about swimming by the scientists. They obtained a series of useful information, the signals transferred by the nervous system. Such information was saved into a button-sized chip, which was then transplanted into the action memory area in Tallin’s brain. The information saved on the chip was released by means of electric power.

Recently, another comprehensive memory transplant was performed at the Motor Nerve Research Institute of the University of California. The comprehensive memory transplanted in the experiment included actions, moods, logic, words, images, etc. The experiment involved an entire transplant of the memory area. This was the largest such experiment done so far.

The transplant was performed making a transfer from a dog named “Genius” to a dog named “Idiot”. “Genius” could understand and follow up to 100 gestures and orders made by its master. It was a real genius in memorizing. “Idiot” was the younger brother of “Genius”. It had no contact with people at all since its birth. It became an animal with nothing in its brain, without any memory.

The operation was a complete success. When the two dogs woke up, “Idiot” had grasped all the abilities “Genius” possessed; it was good at memorizing and sensible. It could follow every gesture and any command given by its master. But “Genius” gave no response to its master, and in fact did not recognize him at all.

57. The purpose of the experiment is _____.

A. to combine the computer and the human brain    

B. to enlarge the capacity of human brain

C. to make some stupid dog turn clever          D. to make bear swim

58. Which of the following statements is TRUE?

A. The scientists transferred a button-sized chip with useful information in Tallin’s brain.

B. The first comprehensive memory transplant was performed at the Motor Nerve Research University.

C. The second experiment wasn’t an entire transplant of the memory area.

D. The Idiot was an animal with memory before brain experiment

59. What does the underlined word “success” refer to?

A. The two dogs woke up.

B. They were both good at memorizing.

C. The Idiot grasped all the abilities of Genius.

D. The Genius grasped all the abilities of Idiot.

60. According to the text, we can infer _____.

A. a person can know more after the experiment

B. a bear can swim after being transferred a chip with related useful information

C. a dog can become clever after entire transplant of the memory area

D. it is really good for animals to have been involved in the transplant experiment

 

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        Some futurologists have assumed that the vast increase of women in the workforce may portend(预示)a rejection of marriage. Many women, according to this hypothesis, would rather work than marry. The opposite of this concern is that the outlook of becoming a multi-paycheck household could encourage marriage. In the past, only the earnings and financial prospects of the man counted in the marriage decision. Now, however, the earning ability of a woman can make her more attractive as a marriage partner. Data show that economic downturns tend to put off marriage because the parties cannot afford to establish a family or are concerned about rainy days ahead. As the economy comes to life, the number of marriages also rises.

         The increase in divorce rates follows to the increase in women working outside the home. Yet, it may be wrong to jump to any simple cause-and-effect conclusions. The effect of a wife’s work on divorce is no less cloudy than its effect on marriage decisions. The realization that she can be a good provider may increase the chances that a working wife will choose divorce over an unsatisfactory marriage. But the reverse is equally plausible(似是而非的). Tensions grounded in financial problems often play a key role in ending a marriage. By raising a family’s standard of living, a working wife may strengthen her family’s financial and emotional stability.

         Psychological factors also should be considered. For example, a wife blocked from a career outside the home may feel caged in the house. She may view her only choice as seeking a divorce. On the other hand, if she can find fulfillment through work outside the home, work and marriage can go together to create a stronger and more stable union.

         Also, a major part of women’s inequality in marriage has been due to the fact that, in most cases, men have remained the main breadwinners. A working wife may rob a husband of being the master of the house. Depending upon how the couple reacts to these new conditions, it could create a stronger equal partnership or it could create new insecurities.

71. It is said in the passage that when the economy moves to a worse situation, _________.

         A. men would choose working women as their marriage partners

         B. more women would get married to seek financial security

         C. even working women would worry about their marriages

         D. more people would prefer to remain single for the time being

72. The underlined word “rejection” in Paragraph 1 is closest in meaning to _________.

   A. accepting     B. refusing     C. producing      D. confusing

73. If women find fulfillment through work outside the home, _________.

         A. they are more likely to control their marriage partners

         B. their husbands are expected to do more housework

         C. their marriage ties can be strengthened

         D. they tend to put their career before marriage

74. One reason why women with no career may seek a divorce is that ________.

         A. they feel that they have been robbed of their freedom

         B. they are afraid of being bossed around by their husbands

         C. they feel that their partners fail to live up to their expectations

         D. they tend to suspect their husbands loyalty to their marriage

75. Which of the following statements can best summarize the authors view in the passage?

         A. The stability of marriage and the divorce rate may reflect the economic situation of the country.

         B. Even when economically independent, most women have to struggle for real equality in marriage.

         C. In order to secure their marriage women should work outside the home and remain independent.

         D. The effect of the growing female workforce on marriage varies from case to case.

 

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