自然界和日常生活中有很多有趣的声现象.例如：笑树能发出笑声是因为果实的外壳上有许多小孔，经风一吹，壳里的籽撞击壳壁使其            发声。通常情况下广场音乐喷泉的优美旋律通过        传入我们耳朵．

Complete the dialogue with proper words or sentences

A：Hello ! 小题1:_______________________，please?         

B：Hold on，pease。Your call ，Tom

C：Tom speaking 小题2:______________________?

A：Oh，小题3:______________________________.

C：Where did you go？

A：I went toYinchuanwith my parents .

C：小题4:___________________?

A：I like it very much.It’s one of the most beautiful cities in the norhwest of Chian

C：小题5:___________________?

A： Lots of thngs ，such as swimming ，boating，fishing ande riding camels But I think sand sliding is the most interesting

C：Oh，really？ I can’t wait to go there 。