The discovery was a majorfor research workers
Câu hỏi
Nhận biếtThe discovery was a major _______ for research workers.
Đáp án đúng: C
Lời giải của Tự Học 365
Giải chi tiết:
A. cuộc đột nhạp
B. phá vỡ
C. bước đột phá/ kỉ lục
D. phá vỡ
Luyện tập
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