题目内容
（请给出正确答案）
[单选题]
10 Dogs cannot distinguish the color of traffic lights, so the master must make the de
A.bypass
B.exceed
C.proceed
D.proclaim
查看答案
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.bypass
B.exceed
C.proceed
D.proclaim
如果结果不匹配，请 联系老师 获取答案
更多“10 Dogs cannot distinguish the…”相关的问题
听力原文： Man has a big brain. He can think and speak. Scientists used to think that men are different from animals because they can think and learn. They now know that animals can learn —dogs, rats, birds —and worms —can learn. So scientists are beginning to understand that men are different from animals because they can speak. Animals cannot speak. They make noises when they are afraid, or angry, or unhappy. Apes are our nearest cousins. They can understand some things more quickly than human beings, and one or two have learned a few words. But they are still different from us. They cannot join words and make sentences. They cannot think like us because they have no language. They can never think about the past or the future.Language is a wonderful thing. Man has been able to develop civilization because he has language. Every child can speak his own language very well when he is four or five —but no animal learns to speak. How do children learn？ Scientists do not really know. What happens when we speak？ Scientists do not know. They only know that man can speak because he has a big brain.
(34)
A．Because he has a big brain.
B．Because he learns to speak.
C．Because he develops civilization.
D．Because he knows many words.
That is the most important piece of advice that Metro has offered the public since the bomb blasts that destroyed commuter trains in Madrid last week. Other steps have been taken as well. Metro says, for example, that it has beefed up the presence of uniformed officers, some with bomb-detecting dogs and some with sensors that can detect radiological material. Less obvious, but equally important, are measures that have been in place for some time, including sensors that can detect nuclear and chemical material, along with plainclothes security officers and frequent contacts between Metro staff and the FBI.
Nevertheless, it's not practical to screen all passengers entering the Metro system or any other underground or commuter train system in the country. Nor is it realistic to assume that police officers and dogs will be visible in every station or on every train. For that reason, Metro's request—made over its public address system the past few days and repeated by its spokesmen—that its customers should remain vigilant is not to be taken lightly. Metro officials say, in Pact, that they'd prefer to have their time wasted occasionally than feel they could have prevented a tragedy and failed to do so. Customers should take their word for it.
The Madrid bombings should also serve as a reminder that civil defense throughout the city and the country is still taken far too lightly. Political leaders don't talk about it as much as they should, because they don't like to acknowledge that they cannot promise protection from attack. Many people are still not better prepared, mentally or otherwise, than they were three years ago, and many businesses still don't have an emergency plan. So once you've finished your newspaper, ask yourself some questions. Are there supplies in your house to last a couple of days？ Are there emergency telephone numbers pinned to your refrigerator？ Do you own a battery-powered radio, which could help you get information if you need it？ Small amount of effort made now could pay off down the road in the event of another terrorist tragedy.
What is the best title for this passage？
A．Stop reading.
B．The Madrid bombings' effect.
C．How to protect yourself on the Metro.
D．Metro service offers.
How Sled Dogs Work
They're physical wonders-able to endure extreme conditions for extensive periods of time while running fast and pulling more than their own weight. Sled (雪橇) dogs have been around for generations, and today they remain a large part of a dog driver's life.
In Arctic (北极的) regions, some 35 000 years ago, Eskimos' dogs bred with wolves and other dogs. Their offspring were well-adapted to the cold and snow. There's no saying exactly when someone thought to have dogs pull sleds, but it was well before 1000 B. C. that dog sleds provided a means of transportation and a way to haul goods. In recent years, people looking for unique outings have gone on recreational trips with sled dogs. A number of companies market tourist treks via dog sled for adventure travelers.
Dogsled racing in Alaska formally began in 1908, when sled dog owners in Nome, Alaska, held the first All-Alaska Sweepstakes, a 408-mile race from Nome to Candle and back. And in 1973, the inaugural Iditarod Trail Sled Dog Race took place on a route covering more than 1 000 miles in Alaska. There are more competitions in many of the continental United States, and some take place on dry land. In addition to endurance races, sled-dog events include sprint races, weight pulls (in which dogs try to pull the most weight) and freight races (in which dogs try to pull a weighted sled the fastest).
Stamina (耐力) and Strength
Many breeds of dogs are used to pull sleds, including official American Kennel Club breeds such as the Siberian husky, Malamute and Samoyed. However, many sled dogs are of mixed breed and are called Alaska husky or Eskimo dogs. While some Sled dogs may have wolf bloodlines, it's generally not desirable to have a mixture of blood between the two.
Sled clogs are bred for their speed and endurance as well as leadership qualities. They are big dogs with thick coats and wide, flat feet. They sleep with their tails covering their noses to keep warm. Dogs that weigh around 40 to 45 pounds are the ideal size to pull sleds, but some may weigh as much as 85 pounds.
Young dogs that are enthusiastic runners, easy-going and mentally tough are good choices for sled dogs. A dog's gender matters little and both male and female dogs are considered equally.
For racing, the most intelligent and fastest dogs are picked to be lead dogs and run in the front of the pack. Behind them run swing dogs, whose job is to direct the team around turns and curves. At the back of the dog team are the wheel dogs or wheelers, who are right in front of the sled and are usually the largest and strongest of the team. The rest of the dogs are known simply as team dogs.
Dogs are typically from 2 to 10 years old when they pull sleds. After they retire, they might remain with their owner at a kennel or be adopted as pets by others. Rescue groups for sled dogs take in unwanted dogs and care for them, trying to place them in loving homes.
While snowmobiles (also called snow machines),helicopters and airplanes are now often used !n Place of sled dogs, there are still times when dog transportation is preferred. Harsh weather conditions can make flying hazardous, and certain terrain can be more difficult for snow machines to cross than for dogs. Dogs can be more reliable than man-made machines, they're good companions to have on long treks and they can be cheaper to own than other forms of transportation.
Becoming a Sled Dog
The number of sled dogs at a typical kennel(养狗场)is around 75, though some might house as few as 20 Or as many as 150. Many kennel owners are greedy mushers (赶狗拉雪橇的人) and compete in dog sled races. They also train other mushers and sell and lease dogs. The training for each team of racing dogs varies by musher (or whomever is preparing the dogs to race). Conditioning the dogs to run long d
A．Because they are raised by wolves.
B．Because they can stand most severe weather.
C．Because they are fastest runner among Arctic animals.
D．Because they can bear goods like horses do.
听力原文： Of the thousands of different kinds of animals that exist in the world man has learned to make friends with an enormous number. Some are pets, and offer him companionship; some give him protection, and some do hard work which man cannot do for himself.
Trained and tamed for many generations, domestic animals are not accustomed to wandering in search of food and shelter. They look to their masters to provide for their needs, and as long as these are supplied, they are content to do what their masters require.
All domestic animals need proper food. It must be suitable for them, sufficient in quantity, fresh and clean. Some people feed a pet dog or cat on odds and ends of table scraps, and then wonder why the animal seems listless and dull. The quantity of food depends on the size of the animal and the amount of exercise it takes. Overfeeding is as bad as underfeeding. Containers for food and water must be washed regularly if the animal is to maintain good health.
Cats and dogs do not need a place of their own, although a very big dog is better off in a doghouse than in the house. The cat, an independent creature, is very good at finding the safest and most comfortable spot when she wants to take a nap. But cows and horses and similar animals must have proper stables, clean, dry and well ventilated.
Even well cared-for animals may sometimes fall ill. If this happens, the wise master seeks the best advice he can get. All sorts of medicines and treatments are available for sick animals, and in some countries organizations exist to provide them free or at a cheap price. Useful, friendly, hardworking animals deserve to have some time, money and attention spent on their health.
(33)
A．Looking for food by themselves.
B．Being fed properly.
C．Overfeeding or underfeeding.
D．Living on people's odds and ends of table scraps.
What is very important in the long-distance training of dogs？
A．To urge dogs run for g 000 to 3 000 miles every day.
B．To train the dogs for at least one year.
C．To train the dogs to pull vehicles on dry land.
D．To get the dogs accustomed to running long distances.
A．The care and proper selection of dogs for family pets.
B．Different breeds of dogs.
C．Responsibility for seeing that dogs are properly cared for.
D．Different kinds of books about dogs.
The example of dogs and cats in the second paragraph is intended to _______.
A．explain which animals are mammals
B．show the differences between mammals
C．illustrate how shallow dreamless sleep is
D．reveal how smart they are
Dogs are often praised for their ________; they almost never abandon their masters.
A．faith
B．loyalty
C．trust
D．truthfulness
Dogs are often praised for their______; they almost never abandon their masters.
A．faithfulness
B．loyalty
C．credible
D．trustworthiness
