He lives in a house which is close ____ a river. [ ]
A. by
B. to
C. with
D. from
答案:B
根据3×4=2×6这个等式,能写成______个比例式.
可快速扩张支气管的药物是|
A.沙丁胺醇
B.沐舒坦
C.异丙托溴胺
D.布地奈德
E.二丙酸倍氯米松