单选集
单选集
In sport the sexes are separate. (76) Women and men do not run or swim in the same races. Women are less strong than men. That at least is what people say. Women are called "the weaker sex" ,or, if men want to please them, "the fair sex". But boys and girls are taught together at schools and universities. There are women who are famous Prime Ministers, scientists and writers. And women live longer than men. A European woman can expect to live until the age of 74, a man only until he is 68. Are women’ s bodies really weaker7
The fastest men can run a mile in 4 minutes. The best women need 4.5 minutes. Women’ s speeds are always slower than men’ s, but some facts are surpising. Some of the fastest women swimmers today are teenage girls. One of them swam 400 metres in 4 minutes 21.2 seconds when she was only 16. The first "Tarzan" in films was an Olympic swimmer, Johnny Weissmuller. His fastest 400 metres was 4 minutes 59.1 seconds, which is 37.9 seconds slower than a girl 50 years later! This does not mean that women are catching men up. Conditions are very different now, and sport is much more serious. It is so serious that some women athletes are given hormone(荷尔蒙) injections. At the Olympics a doctor has to check whether the women athletes are really women or not. It seems sad that sport has such problem. Life can be very complicated when there are two separate sexes !
In this passage the author implies that ______.
A:women are weaker than men, but faster B:women are slower than men, but stronger C:men are not always stronger and faster than women D:men are faster and stronger than women
Passage Two
Among the question of design, construction, and operation remaining to be solved before commercial airliners travel faster than sound is the difficult problem of sonic boom (声震) , the explosive sound generated when an object moves through the air at supersonic speed(超音速).
A sound is a pressure disturbance: a sonic boom, like other explosive sounds, is the result of an abrupt change in pressure. An airplane in subsonic flight produces weak changed in pressure, but because these disturbances travel at the speed of sound, they move faster than the airplane and stay in front of it. In effect, these disturbances warn the air to get out of the way, and the an does just jet, however, gets ahead of its own pressure disturbances. Consequently a wave of suddenly com pressed air--a shock wave--builds up and is thrown off like the wave ;hat spreads from the bow of a speedboat.
Can sonic booms be eliminated The answer is a categorical negative--they are an innerent(内在的) part of supersonic flight--but the sonic boom probably can be reduced; government and private research is now under way to improve understanding of the sonic boom. If and when the booms can be reduced to tolerable levels, commercial supersonic transports can come rata service.
A:The Sonic Boom B:Air and Its Effects C:Faster Than Sound D:Problems Facing Aviation Today
Some people say that the best way to reduce the body’s mid-section is to do stomach exercise. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are "burned up". The truth is that exercise burns fat from all over the body and not from one specific area, no matter what kind of exercise. Of course, if you reduce the fat throughout your body, you will certainly see results around your waist too.
It is said that you need to exercise only twice a week in order to keep a sufficient level of physical fitness. Studies conducted by American scientists show that unexercised muscles lose their strength very quickly. After 48 to 72 hours, you must use the muscles again to reestablish the good physical effects. And what does that mean to you American scientists concluded that while daily exercise is most helpful, every other day, three days a week will keep a sufficient level of physical fitness.
Is it true that you burn more calories running one mile than walking the same distance The answer is no. The truth is that you use the same amount of energy whether you walk or run the mile, since in both cases you are moving the same weight the same distance. The speed does not matter. Of course, if you run rather than walk for 30 minutes, you will cover more distance, and therefore burn more calories.
If your breathing doesn’t return to normal within minutes after you finish exercising, you have exercised too much. Five minutes or so after exercising, your breathing should be normal, your heart shouldn’t be beating, and you shouldn’t be exhausted.
A:you will lose more weight running one mile than walking the same distance B:you will use more energy walking one mile than running the same distance C:for the same distance the faster you walk, the more energy you will use D:whether you run one mile or walk the same distance, you use the same energy
Some people say that the best way to reduce the body’s mid-section is to do stomach exercise. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are "burned up". The truth is that exercise burns fat from all over the body and not from one specific area, no matter what kind of exercise. Of course, if you reduce the fat throughout your body, you will certainly see results around your waist too.
It is said that you need to exercise only twice a week in order to keep a sufficient level of physical fitness. Studies conducted by American scientists show that unexercised muscles lose their strength very quickly. After 48 to 72 hours, you must use the muscles again to reestablish the good physical effects. And what does that mean to you American scientists concluded that while daily exercise is most helpful, every other day, three days a week will keep a sufficient level of physical fitness.
Is it true that you burn more calories running one mile than walking the same distance The answer is no. The truth is that you use the same amount of energy whether you walk or run the mile, since in both cases you are moving the same weight the same distance. The speed does not matter. Of course, if you run rather than walk for 30 minutes, you will cover more distance, and therefore burn more calories.
If your breathing doesn’t return to normal within minutes after you finish exercising, you have exercised too much. Five minutes or so after exercising, your breathing should be normal, your heart shouldn’t be beating, and you shouldn’t be exhausted.
A:you will lose more weight running one mile than walking the same distance B:you will use more energy walking one mile than running the same distance C:for the same distance the faster you walk, the more energy you will use D:whether you run one mile or walk the same distance, you use the same energy
Passage 1
| In sport the sexes are separate. (76)
Women and men do not run or swim in the same races. Women are less strong
than men. That at least is what people say. Women are called "the weaker
sex" ,or, if men want to please them, "the fair sex". But boys and girls are
taught together at schools and universities. There are women who are famous
Prime Ministers, scientists and writers. And women live longer than men. A
European woman can expect to live until the age of 74, a man only until he is
68. Are women’ s bodies really weaker7 The fastest men can run a mile in 4 minutes. The best women need 4.5 minutes. Women’ s speeds are always slower than men’ s, but some facts are surpising. Some of the fastest women swimmers today are teenage girls. One of them swam 400 metres in 4 minutes 21.2 seconds when she was only 16. The first "Tarzan" in films was an Olympic swimmer, Johnny Weissmuller. His fastest 400 metres was 4 minutes 59.1 seconds, which is 37.9 seconds slower than a girl 50 years later! This does not mean that women are catching men up. Conditions are very different now, and sport is much more serious. It is so serious that some women athletes are given hormone(荷尔蒙) injections. At the Olympics a doctor has to check whether the women athletes are really women or not. It seems sad that sport has such problem. Life can be very complicated when there are two separate sexes ! |
A:women are weaker than men, but faster B:women are slower than men, but stronger C:men are not always stronger and faster than women D:men are faster and stronger than women
A:offer fewer mileage than petrol driven cars. B:run faster than petrol driven cars. C:run more miles than petrol driven cars. D:offer more batteries than petrol driven cars.
下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。
{{B}}第一篇{{/B}}
| ? ? ? ? ? ? ?
? ? ? ? ? ? ? ?{{B}}Ford Abandons Electric
Vehicles{{/B}} ? ?The Ford motor company’s abandonment of electric cars effectively signals the end of the road for the technology, analysts say. ? ?General Motors and Honda ceased production of battery-powered cars in 1999, to focus on fuel cell and hybrid electric gasoline engines, which are more attractive to the consumer. Ford has now announced it will do the same. ? ?Three years ago, the company introduced the Think City two-seater car and a golf cart called the THINK, or Think Neighbor It hoped to sell 5,000 cars each year and 10,000 carts. But a lack of demand means only about 1,000 of the cars have been produced, and less than 1,700 carts have been sold so far in 2002. ? ?"The bottom line is we don’t believe that this is the future of environment transport for the mass market," Tim Holmes of Ford Europe said on Friday. "We feel we have given electric our best shot." ? ?The Think City has a range of only about 55 miles and up to a six-hour battery recharge time. General Motors’ EVI electric vehicle also had a limited range, of about 100 miles. ? ?The very expensive batteries also mean electric cars cost much more than petrol-powered alternatives. An electric Toyota RAV4 EV vehicle costs over $42,000 in the US, compared with just $17,000 for the petrol version. Toyota and Nissan are, now the only major auto manufacturers to produce electric vehicles. ? ?"There is a feeling that battery electric has been given its chance. Ford now has to move on with its hybrid program, and that is what we will be judging them on," Roger Higman, a senior transport campaigner at UK Friends of the Earth, told the Environment News Service. ? ?Hybrid cars introduced by Toyota and Honda in the past few years have sold well. Hybrid engines offer greater mileage than petrol-only engines, and the batteries recharge themselves. Ford says it thinks such vehicles will help it meet planned new guidelines on vehicle emissions in the US. ? ?However, it is not yet clear exactly what those guidelines will permit. In June, General Motors and Daimler Chrysler won a court injunction, delaying by two years Californian legislation requiring car-makers to offer 100,000 zero-emission and other low-emission vehicles in the state by 2003. Car manufacturers hope the legislation will be rewritten to allow for more low-emission, rather than zero-emission, vehicles. |
A:offer fewer mileage than petrol driven cars. B:rum faster than petrol driven cars. C:run more miles than petrol driven cars. D:offer more batteries than petrol driven cars.
The Ford motor company’s abandonment of electric cars effectively signals the end of the road for the technology, analysts say.
General Motors and Honda ceased production of battery-powered cars in 1999, to focus on fuel cell and hybrid electric gasoline engines, which are more attractive to the consumers. Ford has now announced it will do the same.
Three years ago, the company introduced the Think City two-seater car and a golf cart called the THINK, or Think Neighbor. It hoped to sell 5,000 cars each year and 10,000 carts. But a lack of demand means only about 1,000 of the cars have been produced, and less than 1,700 carts have been sold so far in 2002.
"The bottom line is we don’t believe that this is the future of environment transport for the mass market," Tim Holmes of Ford Europe said on Friday. "We feel we have given electric our best shot."
The Think City has a range of only about 53 miles and up to a six-hour battery recharge time. General Motors’ EVI electric vehicle also had a limited range of about 100 miles.
The very expensive batteries also mean electric cars cost much more than petrol- powered alternatives. An electric Toyota RAV4 EV vehicle costs over $ 42,000 in the US, compared with just $17,000 for the petrol version. Toyota and Nissan are now the only major automanufacturers to produce electric vehicles.
"There is a feeling that battery electric has been given its chance. Ford now has to move on with its hybrid program, and that is what we will be judging them on, "Roger Higman, a senior transport campaigner at UK Friends of the Earth, told the Environment News Service.
Hybrid cars introduced by Toyota and Honda in the past few years have sold well. Hybrid engines offer greater mileage than petrol—only engines, and the batteries recharge themselves. Ford says it thinks such vehicles will help it meet planned new guidelines "on vehicle emissions" in the US.
However, it is not yet clear exactly what those guidelines will permit. In June, General Motors and Daimler Chrysler won a court injunction, delaying by two years Californian legislation requiring car-makers to offer 100,000 zero-emission and other low-emission vehicles in the state by 2003. Car manufacturers hope the legislation will be rewritten to allow for more low-emission, rather than zero-emission, vehicles.
A:offer fewer mileage than petrol driven cars B:run faster than petrol driven cars C:run more miles than petrol driven cars D:offer more batteries than petrol driven cars
A:offer fewer mileage than petrol driven cars B:run faster than petrol driven cars C:run more miles than petrol driven cars D:offer more batteries than petrol driven cars
