两列机械波I、II在传播过程中遇到一障碍物，I的波长与障碍物尺寸相当，II的波长远小于障碍物尺寸，则机械波（）
Nowthatyouknowallthefacts，youcanmakeaninformed___(choose).
Decisiononwhetherthemessageisrightorwrongshouldatleastcomeafter_____whatthemessageis.
I_____him150dollarsandmustpayhimbacktomorrow.
Thehouseconsisted_____threebedrooms,akitchen,andabathroom.
