A种饮料的单价比B种饮料的单价少1元,小峰买了2瓶A种饮料和3瓶B种饮料,一共花了13元,如果设B种饮料单价为x元/瓶,那么所列方程是( )。
2(x-1)+3x=13
If you meet some new words, you can ______ in a dictionary.
A.look it up
B.look up it
C.look them up
D.look up them
小儿肺炎风热闭肺证的治法是()。
A.清热宣肺,涤痰定喘
B.辛凉宣肺,清热化痰
C.养阴清肺
D.益气健脾
E.温补心阳,救逆固脱