近期火灾频发,严重威胁着我们的生命和财产安全,安全警钟应该时刻敲响。下列公共标志中,与消防安全有关的是
A.①③④
B.②③④
C.③④⑤
D.①②③④⑤
答案:A
— Look at the boy running on the ground, Is it David?
— It _____ be him, he has just gone to the teacher's office. [ ]
A. must
B. can't
C. could
D. may
对于就餐的残疾客人,服务员应以最大的同情心向他们提供细致入微的服务。()