問題詳情
69. The underlined "it" ( paragraph 4 ) refers to________
(A)a great push
(B)the idea of living beyond the present life span
(C)the idea of living from 200 to 300 years
(D)the conservative estimate
(A)a great push
(B)the idea of living beyond the present life span
(C)the idea of living from 200 to 300 years
(D)the conservative estimate
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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