B.scientists have long been interested in spider silk because of a folk story
C.2,000 years ago the westerners were sure of the medical value of spider webs
D.much of the medical value of spider silk is being developed by some scientists
解析:根据第二段最后一句可判断科学家们正在研究这个课题。
答案:D
3.The passage is most likely to be found in________.
A.a story book
B.a scientific journal
C.a textbook
D.a news report
解析:本文属科普文章,其行文方式及内容经常见诸科学书刊等。
答案:B
4.What is the best title for this passage?
A.Unique Medicine
B.Wonderful Insects
C.New Findings
D.Mysterious Spiderman
解析:文章围绕蜘蛛丝特殊的医用价值而展开,因而“独特的药”更能概括文章的中心。
答案:A
assess ; take over ; give away ; in advance ; meanwhile ; outcome out ; figure out ; correspond
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