The dog has been man’s best friend for thousands of years. Dogs are friendly, obedient and faithful animals. Many stories are told of the bravery and faithfulness of dogs.
Dogs are also intelligent animals, so it is easy to train them. A dog named Barry saved 40 persons when they were lost in the snow on the Saint Bernard Pass in Switzerland about 150 years ago.
Dogs are also helpful in scientific research. The world’s first space-traveler was a dog named Laika. Russian scientists sent it up in aman-made Earth satellite in 1957. Dogs have been film stars, too. A dog called Lassie was the star in a number of American films.
Dogs can hear and smell better than man, but they can not see so well. You may be surprised to learn that dogs are color-blind. A dog lives on average for about 12 or 13 years. A dog aged six months compares in age with a child six years old. A thirteen-year-old child is not yet grown up, but a thirteen-year-old dog is a very old dog indeed.
1. The main topic of this topic is that _______.
A. in some case dogs can save people
B. a dog can only live a short life
C. dogs are the first space-travelers
D. the dog is a very good helper to man
2. According to the writer, dogs notice objects _______.
A. through their sharp eyes
B. by means of beautiful colors
C. only when they touch things
D. with their ears and noses
3. “Dogs are color-blind” means that dogs _______.
A. sometimes do not want to see colors
B. can not see the difference between colors
C. are blind when there are many colors before them
D. are unable to see well if there are some colors
4. An “obedient” dog is one that _______.
A. is brave enough to save people
B. is willing to do what people want them to do
C. always helps its master in difficult situations
D. does everything for its master
5. Which statement is NOT true according to the passage?
A. Dogs are easy to train because they are clever.
B. A dog can live about 12 or 13 years.
C. Dogs are well known because they are film stars.
D. Dogs are friendly and obey people’s orders.
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