有经验的养蜂员,根据蜜蜂的嗡嗡声,就可以知道它是飞出去采蜜还是采好了回蜂房,这是因为蜜蜂带花蜜飞回时,翅膀振动发出的声音的音调比不带花蜜时音调(解释)Letherplaythepiano,?(

Question

有经验的养蜂员,根据蜜蜂的嗡嗡声,就可以知道它是飞出去采蜜还是采好了回蜂房,这是因为蜜蜂带花蜜飞回时,翅膀振动发出的声音的音调比不带花蜜时音调____(解释)
Let her play the piano,________?(反意疑问句)
Very few people came here yesterday,________?(反意疑问句)
Wr.Zhang has gong to America on________(busy)

Answer 1

高,
因为蜜蜂采蜜回来时不去采蜜时身体要重,所以翅膀只有更快的震动才能有足够的升力来保证蜜蜂不会掉下来.由于震动的速度快了所以频率就高了所以音调就高了
does her
did they
business