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What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine(疫苗) is tried on  volunteers.?

A. /;/;/  B. the;the;/?

C. the;/;the D. the;a;the?

D?


解析:

public前加定冠詞表示“公眾”;第二空表示“一種治療的辦法或藥物”,cure是單數可數名詞,要加a;第三空的“志愿者” 指接受疫苗試驗的志愿者,表特指要加the。

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