2. 外语
  3. Although scientists have long ______ the human appendix as ______ organ, there is a growing body of evidence indicating that the

Although scientists have long ______ the human appendix as ______ organ, there is a growing body of evidence indicating that the

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问题 Although scientists have long ______ the human appendix as ______ organ, there is a growing body of evidence indicating that the appendix does in fact have a significant function as a part of the body’s immune system.
选项 A、overestimated ... a minor
B、discounted ... a vestigial
C、valued ... a major
D、ignored ... a pivotal
E、studied ... an inaccessible
答案B
解析
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