24. The stone chip is thought to be the most important tool because it ______.?
A. was one of the first tools?
B. developed human capabilities?
C. led to the invention of machines?
D. was crucial to the development of mankind ?
25. At the end of the passage the author seems to suggest that life in future is ?______.?
A. disastrous
B. unpredictable?
C. exciting
D. colorful ?
解析和答案:
24. D) 这是一道细节题。根据文章第二段尾句Some scientists say that it was the key to the success of mankind可知stone chip对于人类的发展起到了非常重要的作用,这与D正好相符。?
25. B)在文章最后一段中作者说人类在过去的几百万年时间里一直使用stone chip,人类社会发生的变化很小。而我们使用silicon chips才不过几年,生活却发生了巨大的变化。于是作者发出了疑问:二十年后的生活会是什么样子的呢?,二百万年后的世界又会是什么样子呢?,表明将来的生活无法预料,这与选项B相符。
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