阅读下面短文,掌握其大意,然后从1—10各题所给的A、B、C和D四个选项中,选出最佳选项
(A)Theworldisfilledwithmanyinterestingsounds
Someareunpleasantto(1)whileothersareverypleasanttohear
Inasingledayyou2)hearhundredsofdifferentsounds
Allsoundsaredifferent
Somemaybesoft;othersmaybe(3)
Somesoundsarehigh;othersarelow
Somesoundsare(4)
Withoutsoundwecannottalk(5)listentooneanother
Theringingofthealarmclock(6)peopleup
Thehooting(喇叭声)ofacar(7)peopleofdanger
Somesoundsareharmful
Whenplanesflylowoverthe(8),theveryloudsoundscan(9)damagestohouses
Veryloudsoundscanevenmakepeople(10)
peopleB
humanC
ourearsD
outfeelings2
probablyC
hardlyD
frequently3
strong4
usefulB
uselessC
wakesB
awakensC
frightensD
tellsB
mentionsC
warnsD
informs8
earthC
fieldsD