问题
单项选择题
A.Telephones.
B.Respiratory droplets.
C.Door-knobs.
D.Computer keyboards.
答案
参考答案:B
解析:[听力原文]
According to the interview, which of the following are the primary carrier of germs
A.Telephones.
B.Respiratory droplets.
C.Door-knobs.
D.Computer keyboards.
参考答案:B
解析:[听力原文]
According to the interview, which of the following are the primary carrier of germs