31 Roughly 4.5 billion years ago, a planetary embryo the size of Mars _______ into Earth, ripping off Earth's outer layers and sending a cloud of molten debris into orbit.
(A)converted
(B)slammed
(C)tucked
(D)evolved

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統計: A(39), B(87), C(41), D(25), E(0) #1456260

詳解 (共 2 筆)

#1525601

(A)轉化

(B)砰擊

(C)捲起

(D)進化

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#1525603
大約45億年前,一顆行星的胚胎,火星的大...
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