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Experiments _________  represent a giant step into the medicine of the future.

Experiments _________  represent a giant step into the medicine of the future.

Câu hỏi

Nhận biết

Experiments _________  represent a giant step into the medicine of the future.


A.
using gene therapy   
B.
they use
C.
 use gene therapy   
D.
gene therapy uses 
Đáp án đúng: A

Lời giải của Luyện Tập 365

Lược bỏ đại từ quan hệ: "who use......= using....."

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