单选题
英语六级
2017-06-06
What can we infer from the basic rule of extinction?
A． Whales die more than they are born each year.
B． Whales' reproductive ability remains a very low rate.
C． The species of whales is doomed to extinction.
D． Whales' death rate keeps an increasing trend.
参考答案
A
答案解析
定位：根据题干中的信息词the basic rule of extinction定位到第二段第一句。
解析：根据该句可知：“物种灭绝的基本准则是很简单的：当一个物种的死亡率持续高于出生率时，灭绝就发生了。”由目前鲸鱼濒临灭绝状况可推断，其死亡率高于出生率。A项与原文意思相符，故为答案。
解析：根据该句可知：“物种灭绝的基本准则是很简单的：当一个物种的死亡率持续高于出生率时，灭绝就发生了。”由目前鲸鱼濒临灭绝状况可推断，其死亡率高于出生率。A项与原文意思相符，故为答案。
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A． people's growing awareness of the balance between ecology and business
B． their theory which has been derived from life experiences
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A． they will be destined to find the opposite sex
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