What public is concerned about is whether the scientists win be able to find cram for th

问题补充：

What public is concerned about is whether the scientists win be able to find cram for the disease.

A. the; a

B. the; /

C. /; a

D. /; the

答案：

(答案→)A. the; a

B. the; /

C. /; a

D. /; the

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