分析 文章大意:本文敘述了一項(xiàng)新的研究發(fā)現(xiàn)植物相互交流以警示危險(xiǎn).植物之間的交流就是一種化學(xué)物質(zhì).科學(xué)家觀察了害蟲(chóng)在植物上滋生的過(guò)程,發(fā)現(xiàn)在被害蟲(chóng)感染的植物上有一種化學(xué)物質(zhì)HexVic.這種物質(zhì)放在健康的植物上,也會(huì)產(chǎn)生這些物質(zhì).因此要確保植物健康,首先要有友好的鄰居.總之,植物之間不僅交流,而且要互相小心.
解答 62-65:BCDB
62題答案:B 詞義猜測(cè)題.根據(jù) 后面句子all the way from beginning to end.可知此處從頭到尾一直在跟蹤,故選B.
63題答案:C 細(xì)節(jié)理解題.根據(jù)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.可知科學(xué)家觀察害蟲(chóng)在植物上滋生的步驟為:首先他們?cè)趦蓚(gè)由管子連接獨(dú)立的塑料空間種上植物,一棵植物被感染上害蟲(chóng),放在迎風(fēng)的地方,另一棵植物沒(méi)有被感染,被放在順風(fēng)的地方.不久順風(fēng)地方的植物也暴露在害蟲(chóng)面前.故選C.
64題答案:D 推理判斷題.根據(jù)第6段They found one chemical appeared more often in the exposed plants.可知他們?cè)诒槐┞兜闹参锷习l(fā)現(xiàn)了一種化學(xué)物質(zhì),故在此之前應(yīng)是科學(xué)家把被暴露的植株和沒(méi)被暴露的植株進(jìn)行比較,才會(huì)發(fā)現(xiàn)他們之間的差別.因此這句話應(yīng)出現(xiàn)在第6段.故選D.
65題答案:B 標(biāo)題歸納題.根據(jù)第一段A new study finds that plants communicate with one another to warn of danger.可知本文是圍繞著對(duì)植物之間互相交流帶來(lái)的危險(xiǎn)警告.故選B.
點(diǎn)評(píng) 題目涉及多道細(xì)節(jié)理解題,做題時(shí)結(jié)合原文和題目有針對(duì) 性找出相關(guān)語(yǔ)句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確的答案.
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