Bài tập cloze test - Đề 24

WRITE ONE WORD IN EACH GAP

TO COMPLETE THE PARAGRAPH

Polar bears are in (1) of dying out. (2) some other endangered animals, it's not hunters that are the problem, it's climate change. Since 1979, the ice cap at the Arctic Circle where polar bears live has (3) in size by about 30 per cent. The temperature in the Arctic has slowly been (4) and this is (5) the sea ice to melt, endangering the polar bears' home. The polar bears' main (6) of food are the different types of seal found in the Arctic. They catch them by waiting next to the air holes the seals have (7) in the ice. (8) the bears are very strong swimmers, they could never catch seals in the water. This means that the bears (9) do rely on the ice to hunt. Polar bears also need sea ice to travel. They can (10) a huge territory and often swim from one part of the ice to another. They have been (11) to swim up to 100km, but when there is less ice, they may have to swim further, and this can (12) fatal to the bears. A number of bears have drowned in the last few years and scientists believe that it is because they were not able to (13) more sea ice before they became too tired and couldn't swim any further.