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（寒假总动员）2015年高三英语寒假作业 专题01 综合测试（一）（测）（含解析）
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（寒假总动员）2015年高三英语寒假作业 专题01 综合测试（一）（测）（含解析）
I．语法填空（15分）
【2015届黑龙江省哈六中高三上学期期中考试】（共10小题，每小题1.5分， 满分15分）
阅读下面材料，在空白处填上适当内容（不多于3个单词）或括号内单词的正确形式。
Polar bears are suffering in a 1 (warm) world than ever before.
Polar bears live in environments too cold for most animals. 2 much of the year, they live and hunt on the frozen Arctic sea ice. Nature has prepared 3 for the cold conditions. But nothing has prepared the bears for the danger that 4 (threat) the only home they know.
The polar bears’ world is melting. Studies show that the polar ice has reduced by 9.8% every 10 years 5 1978. Now about 20,000 to 25,000 polar bears live in the Arctic. Polar bears depend on the sea ice for their 6 (survive). “The sea ice i s more than just this platform that the bears walk over,” says Andrew Derocher, 7 scientist who studies North American polar bear populations. “ 8 it, they can’t exist.”
Some melting and refreezing of the polar ice is natural. 9 in a warmer world, these cycles speed up, and bears have less time to hunt. Normally, they have three months in the spring when they gain more weight. The extra fat is used later, 10 the bears are not actively hunting.
