搜题请搜索小程序“爱下问搜题”
问题 选择题

下列关于声音的说法中不正确的是[ ]

A. “长啸一声，山鸣谷应”说明次声波传播很远

B. “响鼓也要重锤敲”说明声音是由振动产生的，且振幅越大响度越大

C. “闻其声知其人”说明可以根据音色来判断说话者

D. “隔墙有耳”说明固体能传声

答案

答案：A

选择题

A student in my class said to me, " If I            our math teacher, I          make math learningeasier and more interesting instead of giving the kids much homework to do every day. "

A. were; would  B. am; will    C. was; could
查看答案
单项选择题 A1/A2型题

营养肺和支气管的支气管动脉多来自（）

A.胸主动脉

B.内乳动脉

C.锁骨下动脉

D.肺动脉

E.颈总动脉
查看答案