Sound travels in the form(形式)of _.A.bones B.air C.waves D.vo
Sound travels in the form(形式)of _.A.bones B.air C.waves D.vo
If you made a request in the form of question,you'd sound a
6.Sound waves travel in the air in much the same way _______
Be quiet! You should speak in a low____ A sound B noise C vo
THE SOUND OF THE WAVES怎么样
The cat in the bag made ( )sound .A.ones B.no C.the other D.
The piece of music sound( ) A.well B.heavily C.good D.wonder
The light is a _____ of energy.A.way B.line C.form D.road
sound travels at 340 meters per second in air.travels 为什么用at
Cars pollute the air in the form of ------(waste) gas.
这个介词选择什么?Let me go _ sweep the floor.A.on B.in C.of D.and
Light travels ___than sound.a.much fast b.far fast c.much fa