Scientists are hoping for a _____ in the search for a cure for cancer. A．breakth_刷题宝

题干

Scientists are hoping for a _____ in the search for a cure for cancer.

A．breakthrough

B．break

C．deal

D．progress

上一题下一题 0.85难度单项选择更新时间:2010-07-07 08:39:57

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