Not all people know noise is also

问题描述:

Not all people know noise is also
Not all people know noise is also a kind of poklution.等于__________ __________ know(s) noise is a kind of pollution __________ __________.

Not everyone.As wellManyteenagers inAnmericacan hear nobetter than 65-year-old people do.=InAmerica,manyteenagers'hearing is ___________________________65-year-oldpeople's.帮帮忙!!!Not better than