The passage is primarily concerned with______ [br] The author’s attitude toward

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问题 The passage is primarily concerned with______ [br] The author’s attitude toward the view that living things are divided into three categories is best described as one of______

选项 A、tentative acceptance
B、mild skepticism
C、limited denial
D、studious oriticism
E、whole hearted endorsement

答案 A

解析 The best answer is A, which aptly describes the author’s attitude toward the hypothesis that there are three categories of living things. In lines 30-31 the author states that “it now appears that there are three stems in the tree of life” because new techniques “have strongly suggested” the accuracy of the three-category view (lines 31-41). That the author accepts the three-category hypothesis is suggested by this mention of “strong” support. That this acceptance is “cautious” is conveyed by the use of the terms “seems” (lines 27), “appears,” and “suggested.” Such caution rules out the “wholehearted endorsement” described by E; nor does the author express “denial” of (choice C), “criticism” about 9choice D), or “skepticism” about (choice B) the three-category hypothesis.
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