— Who washed the dishes on the table?
— Lily . [ ]
A. was
B. did
C. had
D. would
答案:B
简述工业管道安全状况等级的评定条件。
下列是所有认识活动的基础、门户和开端的是()
A.感觉
B.知觉
C.记忆
D.思维