Question

【题目】Polar bears are suffering in a much 【1】 (warm) world.

Polar bears live in environments too cold for most animals. During much of the year, they live and hunt on the frozen Arctic sea ice. Nature has 【2】 （prepare）them for the cold conditions. But nothing has prepared the bears for the danger 【3】 threatens the only home they know.

The polar bears’ world is melting. Studies show that the amount of the polar ice 【4】（have）decreased by 9.8% every 10 years since 1978. Now about 20,000 to 25,000 polar bears live in the Arctic. Polar bears rely 【5】the sea ice for their survival. “The sea ice is more 【6】 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. But in a warmer world, these cycles speed up, and bears have less time 【9】 (hunt). Normally, they have three months in the spring when they gain more weight. The extra fat is used later, when the bears are not 【10】

(active) hunting.

Answer 1

【答案】

【1】warmer

【2】prepared

【3】that/which

【4】has

【5】on

【6】than

【7】a

【8】Without

【9】to hunt

【10】actively

【解析】这是一篇说明文，主要讲述了面临全球变暖，北极冰山融化速度变快，北极熊家园环境受到威胁。

【1】此题考察形容词的比较级，much可修饰形容词比较级。故填warmer。

【2】此题考察动词时态中的现在完成时，完成时态的构成为have/has+done。故填prepared.

【3】此题考察定语从句。这句话的意思是“但是这些熊对威胁他们所知道的唯一居所没有任何准备”定语从句的先行词为danger,从句“___3___threatens the only home they know.”中缺主语。故填that/which。

【4】The amount of +名词做主语时，谓语动词应用单数。故填has。

【5】Rely on 解释为依靠，为固定搭配。故填on。

【6】“The sea ice is more___6___just this platform that the bears walk over,”这句话的意思为“海上冰块不仅仅是北极熊行走的平台” more than 为固定搭配，在这句话中解释为不仅仅。故填than。

【7】Andrew Derocher第一次出现.故填不定冠词a。

【8】根据句意，这句话的意思为“没有海上冰块，北极熊不能生存。”故填without.

【9】此处考察have sth to do的用法，应用动词不定式充当定语。故填to hunt。

【10】修饰动词hunt,应用active的副词形式。故填actively。