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_______ has been a topic of continual geological research.

_______has been a topic of continual geological research.

Câu hỏi

Nhận biết

_______ has been a topic of continual geological research.


A.
The continents formed
B.
If the continents formed
C.
How did the continents form
D.
How the continents were formed
Đáp án đúng: D

Lời giải của Luyện Tập 365

Mệnh đề danh ngữ: "How the contionents were formed" bắt đầu bằng từ nghi vấn how làm chủ ngữ của câu. "How the contionents were formed has been a topic of continual geological research." (Các lục địa được hình thành như thế nào là chủ đề xuyên suốt của việc nghiên cứu địa chất.)

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