分析 文章大意:本文叙述了一项新的研究发现植物相互交流以警示危险.植物之间的交流就是一种化学物质.科学家观察了害虫在植物上滋生的过程,发现在被害虫感染的植物上有一种化学物质HexVic.这种物质放在健康的植物上,也会产生这些物质.因此要确保植物健康,首先要有友好的邻居.总之,植物之间不仅交流,而且要互相小心.
解答 62-65:BCDB
62题答案:B 词义猜测题.根据 后面句子all the way from beginning to end.可知此处从头到尾一直在跟踪,故选B.
63题答案:C 细节理解题.根据第5段To start out,they grew plants in two separate plastic spaces connected by a tube(管子).One plant was infested and placed upwind and the other was uninfested and placed downwind.The downwind plants were later exposed(暴露) to the pest.可知科学家观察害虫在植物上滋生的步骤为:首先他们在两个由管子连接独立的塑料空间种上植物,一棵植物被感染上害虫,放在迎风的地方,另一棵植物没有被感染,被放在顺风的地方.不久顺风地方的植物也暴露在害虫面前.故选C.
64题答案:D 推理判断题.根据第6段They found one chemical appeared more often in the exposed plants.可知他们在被暴露的植物上发现了一种化学物质,故在此之前应是科学家把被暴露的植株和没被暴露的植株进行比较,才会发现他们之间的差别.因此这句话应出现在第6段.故选D.
65题答案:B 标题归纳题.根据第一段A new study finds that plants communicate with one another to warn of danger.可知本文是围绕着对植物之间互相交流带来的危险警告.故选B.
点评 题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.
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26.A.well | B.badly | C.simply | D.terribly |
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28.A.before | B.among | C.after | D.during |
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