1、There is a sound wave,the frequency of the wave f=440Hz,and the velocity V=340m/s,Find the wavFind the wave length of the sound wave?

a sound mind is a sound body? listen,there is a whisper here.It( )a small cat.A.sound B.sound likelisten,there is a whisper here.It( )a small cat.A.sound B.sound like C.sounds D.sounds like there is a big desk near the w( ).w开头 英语语法__no air ,there would be no sound.1__no air ,there would be no sound.A were there B there wereC is there D there is2.If tap water were as dangerous as some people think,__would be getting sick.A a lot of more us B more a lot of us C.a lot ___the music___beautiful?A.Is;sound B.Does;sound C.Do;sound D.Are;sound 1、There is a sound wave,the frequency of the wave f=440Hz,and the velocity V=340m/s,Find the wavFind the wave length of the sound wave? ( )sound comes from the children.A.No B.There is no C.there isn't D.Have no that( )boring A.sounds B.sound C.is sound D.sound is 英语翻译We learned that Y is sometimes a vowel.There are two kinds of sounds with the vowel Y.One sound is a package AY,OU,UY .For the package sound of Y,there is on change in spelling. There is a ＿of spring in the air todayA.air B.sound C.sight D.breath There is a saying in English that many people like the sound of their own voice!划分句子成分 a sound sleep is badly needed W hat is that? a box A There is B it C It is D That 1 Do you think the news ( ) very interesting?A are B is C sound D look2 How much students are there in your school?There are___(数百)of students in our school. write,do,sound,say,speak,tell,be,like,learn ,from.用这些词的适当形式填空A：there is an e-mail____canada in my maillbox .B:what does it____?A:It says,my name is john.I____from toronto .I'm thirteen years old .I can't _____chinese well.I w How still everything is!There's not a sound to be heard.多么宁静呀!一点声音也没有.everything is是做什么的?把be heard换成hear行吗?把There's not a sound to be heard.改成there isn't a bit sound行吗? Do you like music?Music is something that everybody e(),everybody can make sound in a way,by singing or p() a music instrument.Many k() of music have developed as people have found out how to sing in different w() there are so many kinds music for h( There is some milk in the [f ].No,there isn't [a ] in it.It [w ]there a moment ago.