三 短文填空（知识拓展）
weigh warm birth be foot kill because easy wide die it good
The polar bear is a very big white bear. We call it the polar bear 16 it lives in the Arctic Circle（北极圈）near the North Pole.
The polar bear lives in snow and ice. At the North Pole there 17 only snow, ice and water. There is not any land. The polar bear has a very 18 coat（皮毛）because the weather is cold in the Arctic Circle. You can't find the polar bear 19 in the snow because its coat is white.
A grown-up polar bear is usually about three meters long and 20 about 450 kilos. It can stand up on its back legs because it has very wide 21. It can use its front legs like arms. The polar bear can swim very 22. It catches fish and sea animals for food. It goes into the sea when it is afraid.
People kill the polar bear for 23 beautiful white coat. Governments of some countries call on that people should stop 24 polar bears. They don't want these beautiful animals to 25 out. Let's take action to protect them together!
16. 17. 18. 19. 20.
21. 22. 23. 24. 25.

16. because
17. is
18. warm
19. easily
20. weighs
21. feet
22. well
23. its
24. killing
25. die