2. 职称英语
  3. The passage is primarily concerned with______ [br] All of the following statemen

The passage is primarily concerned with______ [br] All of the following statemen

游客2024-01-13  16
问题 The passage is primarily concerned with______ [br] All of the following statements are supported by the passage EXCEPT______
选项 A、True bacteria form a distinct evolutionary group.
B、Archaebacteria are prokaryotes that resemble true bacteria.
C、True bacteria and eukaryotes employ similar types of genetic coding.
D、True bacteria and eukaryotes are distinguishable at the subcellular level.
E、Amino acid sequences of enzymes are uniform for eukaryotic and prokaryotic organisms.
答案 E
解析 The best answer is E, the only choice NOT supported by the passage. Lines 37-38 support the idea that “true bacteria indeed form a large coherent group” of the kind postulated by the two-category hypothesis-that, that they are a “distinct evolutionary group” (choice A). Lines 38-40 assert that “archaebateria…are prokaryotes and …resemble true bacteria,” as B states. Lines 10-13 support C: “prokaryotic and eukaryotic cells.. translate genetic information… according to the same type of genetic coding.” D is supported by lines 7-10 in the passage, which state that “the distinction between eukaryotes and bacteria” was “initially defined in terms of subcellular structures visible with a microscope.” E, however, is contradicted by lines 25-27: “the amino acid sequences of various enzymes tend to be typically prokaryotic or eukaryotic.”
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