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This means that for the first time doctors may be able to tell if an infectedper

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This means that for the first time doctors may be able to tell if an infectedper

This means that for the first time doctors may be able to tell if an infected(被感染的)person who feels well is ________ becoming ill, so that they can try to do something to prevent this.

A.in case ofB.in danger ofC.in terms ofD.in charge of

试题答案

B

解析