American black bears appear in a variety of colors despite(尽管) their name. In the eastern part, most of these bears have shiny black fur, but in the west they grow brown, red, or even yellow coats. To the north, the black bear is actually gray or white in color. Even in the same litter(胎), both brown and black furred bears may be born.
Black bears are the smallest of all American bears, ranging in length from five to six feet, weighing from three hundred to five hundred pounds. Their eyes and ears are small and their eyesight and hearing are not as good as their sense of smell. Like all bears, the black bear is timid and rarely dangerous, but if attacked, most can climb trees or cover ground at great speed. When angry or frightened, they are formidable(可怕的) enemies.
Black bears feed on leaves, roots, fruit, insects, fish, and even larger animals. One of the most interesting characteristics of bears, including the black bear, is their winter sleep. Unlike squirrels and many other woodland animals, bears do not actually sleep through the winter months. Although the bear does not eat during the winter months, sustaining(维持) itself from body fat, its temperature remains almost normal, and it breathes regularly four or five times per minute.
Most black bears live alone, except during the mating(交配) season. They prefer to live in caves. Baby black bears are born in January or February after a gestation(怀孕) period of six to nine months, and they stay with their mother until they are fully grown or about one and a half years old. Black bears can live as long as thirty years in the wild, and even longer in some nature reserves.
【小题1】American black bears may have ___________ colours according to the passage.

Mr. Brown, a teacher in a primary school, often fell asleep in class, but he didn't want his  1  to know that．One day he again fell asleep  2  ．When he woke up, one of the  3  ,Tom, asked him, "Why did you fall asleep in class just now, dear sir?"

Mr. Brown's face turned  4  ． "I．．．I．．．The Sungod （太阳神） asked me to visit him in my dream．" he said．

Tom wanted to say something,  5  he said nothing．The next day, Tom also  6  in class．

When the teacher saw him, he  7  Tom up and asked him, "Why did you fall asleep in class and not  8  me, Tom?" 

Tom answered with a smile on his  9  , "The Sungod asked me to visit him, too．" The teacher became  10  when he heard this and asked, "What did he say to you, then?"

He told me he didn't see you yesterday．

1．A．teachers               B．students                       C．parents                  D．workers

2．A．at table                  B．in class                C．in hospital            D．in bed

3．A．boys                     B．girls                  C．men                  D．women

4．A．black                B．red                   C．yellow             D．green

5．A．but                B．and                   C．or                    D．so

6．A．went to bed             B．got up                   C．fell asleep              D．went to work

7．A．woke                 B．threw                         C．hung                    D．brought

8．A．hear from               B．hear of                C．listen to                D．look at

9．A．head                      B．nose                   C．face                 D．ear

10．A．angry                B．happy                  C．sad                     D．pleased