急.Do you think it is polite to listen quietly to other peopl

急.
Do you think it is polite to listen quietly to other people without ___1___ change of expression(表情) on your face?_____2_____,you need to watch two Americans talk.Notice how___3___ will have many changes of expression.The listener may also say something ___4___ the other is speaking.These little remarks(话语) may be one word like “ really” or it may just be a small ___5___ like “ un-huh” or “mmm”.This is the ___6___ American listeners show that they are listening in a friendly way.A no-change expression often means to them that the listener is being ___7___.
( ) 1.A.some B.a little C.no D any
( ) 2.A.Therefore B.For example C.If so D However
( ) 3.A.he B.one C.the man D someone
( ) 4.A.while B.although C.as soon as D until
( ) 5.A.speech B.word C.sentence D sound
( ) 6.A.example B.story C.way D meaning
( ) 7.A.lovely B.polite C.understanding D unfriendly