第12题: [单项选择]下列有关生物量的说法正确的是( ) A. 陆地生态系统中最大的是热带雨林 B. 冻土带的生物量最低 C. 在水生生态系统中,水的最表层的生物量最大 D. 森林生态系统中,树冠的最顶部生物量最大 参考答案:A
第13题: [单项选择]The author began to love books for the following reasons EXCEPT that A. he began to see something in his mind. B. he could visualize what he read in his mind. C. he could go back to read the books again. D. he realized that books offered him new experience. 参考答案:C 答案解析:细节题。这道题需要正确理解第六段的内容。作者爱上读书是因为书能让他浮想联翩,给他全新的感受,而不是因为他能反复地读这些书。注意文中I could return to them (images)agai