Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đáp án (Đề 7)

The author of the passage implies that ___________. A. it is not known exactly how the continental crust was formed B. geologists have neglected the exploration of the ocean floor C. scientis

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The author of the passage implies that ___________.

it is not known exactly how the continental crust was formed

geologists have neglected the exploration of the ocean floor

scientists have concentrated on monitoring earthquakes

the earth’s atmosphere split into water and solids

Giải thích

Chọn đáp án A