問題詳情
62. Paul Davies points out that .
(A)humans need only a one- way ticket to Mars
(B)two-way trips to mars will be made safe soon
(C)It is easy to reduce the danger and cost of flights to Mars
(D)It is cheap to build an everlasting human settlement on Mars
(A)humans need only a one- way ticket to Mars
(B)two-way trips to mars will be made safe soon
(C)It is easy to reduce the danger and cost of flights to Mars
(D)It is cheap to build an everlasting human settlement on Mars
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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