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Pycnandra acuminate (喜树) is a rare tree native to New Caledonia that has the rare ability

英语试题 05-03

文章大意:本文是说明文。文章主要介绍了可以从土壤中吸收重金属的树木,中文名为“喜树”。
8.B 细节理解题。根据第一段第一句Pycnandra acuminate (喜树) is a rare tree native to New Caledonia that has the rare ability to collect heavy metals like nickel (镍) from the ground.“尖刺五加是一种罕见的树木,原产于新喀里多尼亚,具有罕见的能力,从地面收集重金属,如镍。”和第二段In general, trees and heavy metals like nickel don’t really go well together. But Pycnandra acuminata make them live together. And that’s what makes Pycnandra acuminata so special. It sucks out normally poisonous levels of heavy metals from the soil and store them in its trunk, leaves and seeds.“一般来说,树木和像镍这样的重金属不能很好地结合在一起。但是Pycnandra acata让它们住在一起。这就是Pycnandra acata如此特别的原因。它从土壤中吸收通常有毒的重金属,并将它们储存在树干、树叶和种子中。”可知,“喜树”能吸收土壤里的重金属,比如镍。故选B。
9.C 推理判断题。根据第四段第一句The most popular theory states that the concentration of nickel protects such trees from leaf-chewing insects.“最流行的理论认为,镍的浓度可以保护这些树不受啃叶昆虫的侵害。” 和第三句Another theory says nickel has effects of resisting bacteria, which protects the trees from various diseases.“另一种理论认为,镍具有抗菌作用,可以保护树木免受各种疾病的侵袭。”可知,从理论上来说,“喜树”通过收集来的镍杀死昆虫和细菌来保护自己。故选C。
10.A 推理判断题。根据最后一段第一、二句Unfortunately, Pycnandra acuminata is is recently in a bad situation. Human activity in forests of New Caledonia has made Pycnandra acuminata in danger.“不幸的是,最近Pycnandra acata的情况很糟糕。人类在新喀里多尼亚森林的活动已经使九喜树处于危险之中。”可知,不幸的是,最近“喜树”的生存情况很糟糕。人类在新喀里多尼亚森林的活动已经使“喜树”处于危险之中。故选A。
11.D 推理判断题。文章主要介绍了可以从土壤中吸收重金属的“喜树”。这种树木因为受人类活动的影响处于濒危状态,故这篇文章最有可能出现在一本杂志的“人与自然”专栏。故选D。
 
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