Unlike the times of Peking Man, today the global temperature is rising due to the greenhouse effect. In the future, could humans develop to handle the warmth just as Peking Man did to fight the cold?

　　文章大意：最新研究发现北京人的年代应该是处于冰河世纪，比我们原先的估计早二十万年。

　　1．According to the new research, Peking Man actually dates back to________.

　　A．around 500,000 years ago

　　B．over 200,000 years ago

　　C．about 770,000 years ago

　　D．about 2 million years ago

　　答案：C　细节理解题。由第二段最后一句话“What's important about that date, about 770,000 years ago, is that this was an ice age on Earth.”可知。

　　2．What is the most important standard for scientists to decide an ice age?

　　A．The weather conditions.

　　B．The continuous existence of any large ice sheets.

　　C．The average yearly temperature.

　　D．The long period of snowfall.

　　答案：B　推理判断题。由第四段第三句话“...scientists regard the whole time as one ice age because of the continuous existence of at least one large ice sheet—the one over Antarctica.”可知。

　　3．Which of the following is TRUE of Peking Man?

　　A．He is the oldest human being.

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