问题补充:
To our relief, scientists have made a great in the treatment of cancer in recent years.
A. assumption B. breakthrough
C. discovery D. prediction
答案:
答案:B
时间:2019-12-02 11:51:05
To our relief, scientists have made a great in the treatment of cancer in recent years.
A. assumption B. breakthrough
C. discovery D. prediction
答案:B