题目

 We don’t know _________, maybe at two o’clock tomorrow afternoon. A. why will we start  B. how we will start it  C. when we will start  D. where we will go 答案：C新型冠状病毒在人与人之间传播最主要的途径是（ ）A.呼吸道飞沫传播、接触传播B.空气传播、气溶胶传播C.粪口传播、血液传播D.消化道传播