By "ecocide" the author most probably means _____. According to the text, the author mentions plutonium in paragraph 1 to _____

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问题 By "ecocide" the author most probably means _____.
According to the text, the author mentions plutonium in paragraph 1 to _____.

选项 A、estimate the amount of nuclear material in Europe.
B、exemplify one of the possible causes of lung cancer.
C、highlight the measures needed to prevent lung cancer.
D、show the destructive properties of industrial waste materials.

答案B

解析 逻辑结构题。本题问:根据课文,作者在第一段中提到钚是为了什么?解这类题的思路是从宏观看微观、从主题看细节。本文的主题是讲"先进技术与癌症的因果关系"。第1段中作者讲到"只要一磅钚释放到大气层就可能使90亿人患肺癌"。可见,作者提到钚是要举出造成癌症原因的一个例子。"估计欧洲核材料的数量",与全文主题和段落逻辑结构相悖。"强调预防癌症所需要的措施",段落中没有谈到措施。"表明工业废料的毁灭性能",钚是核物质,并非一般工业废料。故其他三项均不能入选。
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