任务型阅读

    Arctic foxes (北极狐) live in the Arctic. They grow about 50 centimeters long, not including the tail, 30 centimeters tall and weigh from 3 to 7 kilos.

    The white ones are white in winter, but gray­brown in summer. The blue ones are blue­gray all year round. And the long fur covers their whole body to keep them warm in the low temperature in the Arctic.

    Arctic foxes mainly feed on birds, birds' eggs and other small animals. Teamwork is the way they look for food.

    Baby Arctic foxes are very lovely. They don't open their eyes until a week after their birth. They begin to look for food on their own when they are about six months old. The next year they can live alone.

    Now the number of Arctic foxes is becoming smaller and smaller, because people kill them for their fur to make beautiful coats.

从下面五个选项中选出能填入文中空白处的最佳选项。

A. We must do something to protect Arctic foxes. B. For the first half of the year, their parents offer them food. C. Arctic foxes are white or blue in color. D. They don't like to do that alone. E. Arctic foxes have long and thick fur.