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Câu hỏi:
Biochemists have solved many of the mysteries about phonosynthesis, the process which plants make food.
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A.
have solved
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B.
mysteries
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C.
the process which
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D.
food
Lời giải tham khảo:
Đáp án đúng: C
Đáp án D
the process which ---> the process by which
Hãy trả lời câu hỏi trước khi xem đáp án và lời giải -
A.
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