苯巴比妥在90%的乙醇溶液中溶解度最大，则90%的乙醇溶液是（）
A.潜溶剂
B.极性溶剂
C.助溶剂
D.消毒剂
E.增溶剂
参考答案：A
Pleasant as they made it ______ in Jiuzhaogou, we felt tired after the long journey.
A．to travel
B．travel
C．travelled
D．travelling
90+0○92×0，○里应填[ ]
A．>
B．<
C．=
