問題詳情

Do you know how many different kinds of creatures besides us humans live on Earth? Try 8,699,999. Scientists recently estimated that there are 8.7 million different species on earth, plus or minus one million. Their guess, which they made after carefully studying the relationships between individual species and the broader groups they 76. , is being described as the most accurate study 77. . Most of these creatures are animals, 78. there are around 7.77 million unique kinds.The scientists, however, admit that they don’t know 79. . In reality, they say that only 1.2 million species have actually been formally classified. Identifying the other 7.5 million or so species could take hundreds or thousands of years. So for now, the80. of the creatures with which we share our planet remain unknown to us.
76.
(A) belonged to
(B) devoted to
(C) exposed to
(D) tended to

參考答案

答案：A[無官方正解]
難度：適中0.5
統計：A(5),B(1),C(0),D(0),E(0)

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