2. 外语
  3. We have yet to(i)______the assessment of Canada’s biodiversity. Most of the vertebrates have been assessed, but our challenge wi

We have yet to(i)______the assessment of Canada’s biodiversity. Most of the vertebrates have been assessed, but our challenge wi

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问题 We have yet to(i)______the assessment of Canada’s biodiversity. Most of the vertebrates have been assessed, but our challenge will be the assessment of invertebrates and plants. This task is(ii)______not only because of the high number of species, but also because of the diversity, each species requiring a different approach.
选项
答案B,F
解析 The sentence implies that Canada’s invertebrates and plants have not yet been assessed, so the assessment of Canada’s biodiversity is not finished; therefore, the correct answer to Blank(i)is "complete." The assessment of invertebrates and plants is described as a "challenge," so the answer to Blank(ii)must be synonymous with "difficult." The only answer choice that matches this meaning is "daunting," so it is correct.
Thus the correct answer is complete(Choice B)and daunting(Choice F).
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