19.What can we learn about Joerg Bohlmann from the passage?
A.He is opposed to whale hunting.
B.He made his discovery during Christmas.
C.He has worked in the perfume industry for many years.
D.He has previously done genetic research.
答案:D 推理判断题。根据第二段最后一句“But his discovery of a new plant gene (基因)... the perfume business.”及第三段表达的语境可知,Joery Bohlmann已经意识到,这些树中某些基因所产生的化学物质可以被用于香水中以代替龙涎香,但是这些化学物质和其他物质混合在一起,难以分离,故可以断定,Joerg Bohlmann曾经做过基因研究,故D项正确。
20.What is the best title for the passage?
A.The Christmas tree's secret.
B.The sweet smell of success.
C.Whalefree perfume.
D.Save the whale.
答案:C 标题概括题。根据文章第一段“Expensive perfumes (香水) come in tiny bottles, but many hide a whalesized secret.”及文章最后一句中“producers have been calling to find out how to use his technology in new perfumes.”可知,本文主要介绍了在香水中使用的龙涎香,这种价格昂贵的物质,最终被树中的某种化学物质成功取代。故C项为最佳标题。
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