Karl Von Linne (or Linnaeus, as he is widely known) was a Swedish biologist who devised the system of Latinised scientific names

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问题     Karl Von Linne (or Linnaeus, as he is widely known) was a Swedish biologist who devised the system of Latinised scientific names for living things that biologists use to this day. When he came to (1)_____ people into his system, he put them into a group called Homo and Linne’s hairless fellow humans are still known biologically as Homo sapiens. (2)_____ the group originally had a second member, Homo troglodytes. It lived in Africa, and the pictures show it to be covered (3)_____ hair.
    Modern (4)_____ are not as generous as Linne in welcoming other species into Man’s lofty (5)_____, and the chimpanzee is now referred to (6)_____ Pan troglodytes. But Pan or Homo, there is no (7)_____ that chimps are humans’ nearest living relatives, and that if the secrets of what makes humanity special are ever to be (8)_____, understanding why chimps are not people, nor people chimps, is a crucial part of the process. That, in turn, means looking at the DNA of the two species, (9)_____ it is here that the (10)_____ must originate.
    One half of the puzzle has been (11)_____ for several years: the human genome was published in 2001. The second has now been added, with the announcement in this week’s Nature (12)_____ the chimpanzee genome has been sequenced as well. For those expecting (13)_____ answers to age-old questions (14)_____, the publication of the chimp genome may be something of an (15)_____. There are no immediately obvious genes-present in one, but not the other-that account for such characteristic human (16)_____ as intelligence or even hairlessness. And (17)_____ there is a gene connected with language, known as FOXP2, it had already been discovered. But although the preliminary comparison of the two genomes (18)_____ by the members of the Chimpanzee Sequencing and Analyssis Consortium, the multinational team that generated the sequence, did not (19)_____ any obvious nuggets of genetic gold, it does at least show where to look for (20)_____.


选项 A、ruthless
B、mediocre
C、opaque
D、available

答案D

解析 本题是一道语意逻辑推导题。本题中的特殊标点符号冒号暗示冒号前后的两部分在语意上应该是相同的。冒号后面部分的含义是:"人类基因组已在2001年分布于众"。冒号前面部分的含义应该是:"谜的一半已经被解开若干年"。由此可以推导出本题的正确答案应该是"available"(可达到的)。
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