下图是一幅以儿童生活为主的风俗画,请你判断它反映的是哪一朝代的社会生活?
A.隋朝
B.唐朝
C.宋朝
D.元朝
答案:C
----I called you at 4:00 yesterday afternoon ,but nobody answered.
----Sorry,I____with my friends at that time.
A.swim
B.swam
C.will swim
D.was swimming
流量孔板是测量进入焦炉或焦炉一侧的()
A.煤气流量
B.空气流量
C.废气量