A:Having an adventure; to travel
B:To have an adventure; traveling
C:Have an adventure; to travel
D:To give an adventure; traveling
如图所示电流表的读数为____;电压表的读数为____;电阻箱的读数是____Ω。
用一根吸管做笛子,在吸管上有五个孔,其中一个是吹孔。嘴对着吹孔吹,由于吸管内空气柱发生____ 产生笛声。用手指按住其他不同的孔吹笛,可以听到不同的声音,这主要改变了声音的____ (选填“响度”“音调”“音色”)。
A: Who's that man?
B: _________ is my father.