“未见其人,先闻其声”,就能判断来的熟人是谁,主要是依据讲话人的 [ ]
A.振幅
B.音调
C.响度
D.音色
答案:D
— I'm dead tired.I can't walk any farther,Jenny.
— ________,Tommy.You can do it. [ ]
A. No problem
B. No hurry
C. Come on
D. That's OK
下列选项中不属于服务价格的是( )。
A.经营性收费
B.行政性收费
C.事业性收费
D.邮电资费