—Tom must be at home because the light in his house is on.

—He       be at home, because I saw him playing basketball on the playground.

A. must B. can’t   C. mustn’t

小儿出现高热，面部青紫，尤以鼻柱、两眉间及口唇四周为甚，往往属于（）

A.血热瘀滞

B.肾阴耗竭

C.气滞血瘀

D.动风先兆

E.湿热熏蒸