— Flu-B (乙型流感) is a terrible disease (疾病). What should we do?— Don’t worry. Scie

题干

— Flu-B (乙型流感) is a terrible disease (疾病). What should we do?
— Don’t worry. Scientists try their best to _________ ways to solve it.

A．blow out

B．hang out

C．find out

D．help out

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