A. No. May I see that one, please?
B. How much is this postcard?
C. Yes, I want to buy some postcards.
D. Can I help you?
E. Sure.
F. It's two yuan.
G. I'll take five, please.
H. Do you like this one?
____→____→____→____→____→____→____→____
①夺取政权,加冕称帝 ②打败反法联军,冲击欧洲封建势力,扩散法国大革命成果
③征战欧洲,扩疆拓土 ④亲自主持编制并颁布实施《民法典》
如图所示,将一把钢尺紧按在桌面上,先让一端伸出桌边短一些,拨动钢尺,听它振动发出的声音,然后一端伸出桌边长一些,再拨动钢尺,听它振动发出的声音,使钢尺两次振动幅度大致相同.比较两种情况下,第 ____次钢尺振动得快,它的音调 ____(填“高”或“低”),这说明音调与 ____有关.
下列词语中,各对加线字的读音都不相同的一项是( )