The key on a piano corresponding to the note of freqency 880Hz is depressed very gently,so that the hammer does not strike the string,but the damper is lifted and the string is free to vibrate.When the key corresponding to the note of frequency 440Hz

The young_____plays the______very well.A:pianist;piano B:piano;pianist C:pianist;pianist D:piano;piano SAT2物理的一道题,关于声（波）,英语的……30.A piano tuner tunes a piano by ringing a tuning fork and playing a key on the piano simultaneously.The tuning fork rings with a frequency of 100 Hz and the piano string vibrates with a frequ Mike often ( ) on the weekends.A、plays the piano B、go hiking C、going shopping she usually practises( )piano on saturdaysA.a B.an C.the He ofter＿. A.plays the piano B.piay the piano C.plays piano Can you play ___?a、piano b、pianos c、a piano d、the piano the man turned the key-----the lock and opened the door.a.to b.in c.on d.with The key on a piano corresponding to the note of freqency 880Hz is depressed very gently,so that the hammer does not strike the string,but the damper is lifted and the string is free to vibrate.When the key corresponding to the note of frequency 440Hz Alice found a key( ) the door on a small table The key is on the table.Can you __ it?A look at B look C see D watch a key is on the table改为复数句 When I saw Mary,she ______ on the piano.选项:a、is playing b、plays c、 was playing d、played Can you play A：the baskeaball B:piano C:the piano The young 答案plays the 答案veryThe young 答案plays the 答案very well A:pianist,piano B:piano,pianist C:pianist,pianist D:piano,piano step翻译traslation(music):the difference in pitch between two musical notes that are separated by one key on the piano The key is on the table 对The key 提问 They spent a lot of money on the piano(改为同义句）They __ a lot money__ the piano. He has lost the key to the box_____the money is kept.A.where B.which C.on which D.on that