题目内容
The word robot mad robots themselves are less than 100 years old. But humans have been dreaming of real and imaginary copies of themselves for thousands of years. Early people made little human statues out of clay. And they cut wood and stone to look like humans.
What is the future of robots？ The goal of scientists is to create a true humanlike robot. Some experts have described this robot of the future as one that can act independently with the physical world through its own senses and actions. Humans have the ability to see, hear, speak and solve problems. Engineers have built robots that have one or two of these abilities. But it takes a number of big expensive computers to make the robots work.
The biggest problem in creating a humanlike robot is copying human intelligence. The way the human mind works is almost impossible to copy. A simple computer can solve mathematical problems far beyond the ability of even the smartest human mind. But the human mind is better than a thousand supercomputers at speaking, hearing and problem solving. Seven American and Japanese companies are working to develop the senses of sight and touch for robots. The development of these senses will make robots much more useful.
However, the most important human ability—the most difficult to copy—is problem solving. An intelligent robot must be able to change the way it acts when it faces an unexpected situation. Humans do it all the time. Computers must do it for robots. This means computers must have a huge base of information about many things. They must be able to find quickly the needed information in their systems. And they must make choices about how to act. So far, this is beyond the ability of computers.
According to the passage, however intelligent a robot may be, it ______.
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甲和乙（两人不在同一城市)之间订有买卖一只纯种斑点狗的买卖合同，甲为卖方，乙为买方，价格为2万元甲和乙(两人不在同一城市)之间订有买卖一只纯种斑点狗的买卖合同，甲为卖方，乙为买方，价格为2万元，甲并需提供该斑点狗的血统证明书。双方未就履行顺序有所约定。交货地点为乙的住所，合同并约定由丙将该斑点狗自甲所在城市运至乙所在城市。但甲将斑点狗和血统证明书交给丙后，由于丙的过失，将血统证明书遗失，仅将斑点狗送至乙处。斑点狗交付后，甲即向乙请求付款。对此，下列说法正确的是：
A．aspectB．altitudeC．horizonD．scope
The author's attitude towards the prospect of cloning seems to be that of
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
An exercise program designed for younger adults may be inappropriate for older persons, particularly for persons over age 50. Special attention must be paid to matching the program to the interests and abilities of the participants. The goals of the program should include both social interaction and physical conditioning.
Older adults should take a physical examination before starting a fitness program. Included in this examination should be a stress cardiogram(心电图) , blood pressure check, and an evaluation of joint functioning. It is a good idea for participants to learn how to monitor their own cardiorespiratory(心肺的) status during exercise.
Well-designed fitness programs for older adults will have activities that begin slowly, are monitored frequently, and are geared to the enjoyment of the participants. The professional staff coordinating the program should be familiar with the signs of distress. Periods of warm-up and cool-down should be included. Activities to increase flexibility are beneficial in the beginning and ending parts of the program. Participants should wear comfortable clothing, appropriate shoes, and be mentally prepared to enjoy the activities to the fullest.
A program designed for older adults will largely conform. to the criteria of activity, intensity, duration, and frequency. The principal exception is in the intensity camp where the THR(Target Heart Rate) should not exceed 120 beats per minute. This level of intensity is approximately 40% to 50% of the maximum heart rate. Also, because of possible joint or muscular or skeletal problems, certain activities may have to be done in a sitting position. Pain and discomfort should be reported immediately to the fitness instructor.
Fortunately, properly screened adults will rarely have health emergencies during a well-monitored fitness program. Like their youthful counterparts, many older adults find fitness programs socially enjoyable, physically beneficial, and occasionally addictive.
According to the author, ______.
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