17. What many people consider "hard facts" (lines 46-47) would most likely be viewed by the author as 变相态度题

　　(A) necessary

　　(B) solid

　　(C) disturbing

　　(D) tentative：not certain or fixed; provisional

　　(E) difficult

　　分析;原文的“many people”是认为有些真理为真理，但是作者的理念是，在人们思维概念以外的东西也有是真的，所以作者会对这里的“many people ”认知的“ hard facts”持有的审视的角度。

　　18. The author mentions "coin collecting" (line 48) as an activity that

　　(A) is straightforward and relatively unambiguous

　　(B) was once ridiculed for its irrelevance to life

　　(C) entails a high level of attention to detail

　　(D) can provide gratification to those who engage in it

　　(E) exemplifies the spirit of both scientists and artists

　　分析：联系上一题，这里的行为是一个直截了当，并且目睹明确的。

　　19. The "montage" (line 52) is characterized as

　　(A) more comprehensive than a single image but less realistic

　　(B) more nearly complete than a single image but still inadequate

　　(C) less realistic than a painting but more accessible

　　(D) less accurate than a single image and more difficult to obtain

　　(E) less comprehensible than a painting and more difficult to achieve

　　分析：“montage”这里举例实质支持本段核心观点。