問題詳情
47.Which of the following statements is true about space junk?
(A) It is huge, heavy machines.
(B) It never changes position.
(C) It floats slowly around the Earth.
(D) It may cause problems for space shuttles.
(A) It is huge, heavy machines.
(B) It never changes position.
(C) It floats slowly around the Earth.
(D) It may cause problems for space shuttles.
參考答案
答案：D
難度：適中0.612903
統計：A(3),B(4),C(4),D(19),E(0)
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