I don't _____________ to walk with crutches.[ ]
A. wanted
B. want
C. wants
D. wanting
答案:B
凡能减轻或制止咳嗽和喘息的药物,称为( )。
A.止咳平喘药
B.化痰药
C.芳香化湿药
D.燥湿药
E.安神药
装置区内加热用明火应如何控制?