C: 2个错. 1) 用了同样的推理. 原文说有H, 所以防metal. C也说有H. 没加强什么. 如果说: a)不能防metal的没H (无因无果), 或b) 能防metal和不能防metal的区别就只有H (排除他因), 就行. 2) C并没有说others或那个group是能防metal和. 注意原文用了定语从句that thrive in soil with high concentrations of metals, C没有. C中的group很有可能大于原文的group. In another word, 原文的group是C中的group的子集.
对你的2):那个group里的植物都能生长于金属环境,就说明它们都有能力防metal。原文说herb is one of a group of closely related plants that thrive in soil with high concentration of metals. 这个group和C里的group当然是同一个group,你没看C里有定冠词the吗?前文出现过后文才用the特指。
第二点,你怎么可以举例说原文日本=笨呢?这道题原文的意思是所有这个group的植物都可以生长在金属土壤,你举的例子应该是中日韩都=聪明。 thrive是限定修饰plants的,这个plants可不是广义的植物啊,而是a group of plants,是这个group里的植物啊,这个group已经限定了是能生长在金属土壤里的。如果thrive修饰大部分的植物,那还要后面那句most other plants干吗?
Information: I. a group of plants that thrive in soil with high concentrations of metals, let the group be herb + plant x II. herb is a part of the group III. herb produces lots of H
hypothesis: lots of H => able to survive in soil with high concentration of metal
C properly links all the information together: herb lots of H + can survive x can survive + (new info) lots of H too
A. Where histidine is found is irrelavant to its effect. 排除 B. The production of other amino acids is not discussed. 排除 D. The effect that the herb has on the soil is irrelavant to the hypothesis concerning why it can survive in the soil. 排除 E. The change in concentration is irrelavant to the hypothesis concerning the effect of high concentration. 排除