近年来，我国自然灾害发生频度和受灾程度日趋严重的主要原因是
A．人口分布越来越集中
B．经济发展过快
C．随着人口增长，对自然开发利用强度加大
D．我国各地经济发展趋于均衡
答案：C
本题考查自然灾害的发生。自然灾害形成的原因主要是自然原因。人为原因能够诱发和加剧自然灾害。近年来，我国自然灾害发生频度和受灾程度日趋严重的主要原因是随着人口增长，对自然开发利用强度加大，人与自然呈现不协调的趋势。所以本题选择C选项。
Joe wanted a bike. He asked his parents for the money and they had said he must 1 it. But how? He thought about this 2 he walked home. Not many people wanted to ask kids to work for 3 . Maybe he could clear away snow for the neighbors. 4 this was summer. He’d have to 5 a long time for that. He couldn’t cut grass for their gardens 6 he had no tools to do the work with. Then Joe saw one of his 7 , Dick, delivering 8 . I could do that, he 9 . Maybe I could get the bike right 10 . I could pay for it 11 each week. He ran to catch up 12 Dick．Joe asked 13 questions about having a paper route. He learned that 14 was possible to earn twenty-five dollars each week. He learned 15 the job took about three 16 each night. Dick gave him the 17 of the newspaper manager. Joe almost flew home. After he had 18 his plan, his mother smiled. “I think it’s a great idea.” she said. “I’ll call the newspaper.” “Wait Mom,” Joe said. “I’ll19 . After all, I’m going to be a businessman now.” Joe’s mother smiled 20.
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