ue B. cold-water swimming causes more heart attacks in summer than in winter C. cold-water swimming can make the body temperature dangerously high D. Polar Bears are bears swimming in freezing water 4. The Polar Bears like to swim all the year round, for __________. A. they can remain young B. it is an easy way to keep the body warm in winter C. they find it enjoyable and interesting D. they might meet fewer troubles in life 5. The passage is mainly about __________. A.a group of cold-water swimming lovers B. the polar bears' life C. doctors' ideas about cold-water swimming D. the requirements of the Polar Bear Club 9. In modern society there isa lot of disagreement petition. Some value it highly, believing that it is good for social progress. Others say petition is bad. It sets one person
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