外感风寒湿邪,症见恶寒发热头痛,肌表无汗,肢体酸楚疼痛,口苦而渴者,治宜选用()
A.参苏饮
B.败毒散
C.桂枝汤
D.小青龙汤
E.九味羌活汤
参考答案:E
All the students are looking forward to the first _____ to take the College Entrance Examinations.[ ]
A. measure
B. attempt
C. purpose
D. desire
实验室需配制450ml0.1mol/L的Na2CO3溶液,以下操作正确的是( )
A.称取4.77gNa2CO3固体溶于水配成450mL溶液
B.称取5.3gNa2CO3固体溶于水配成500mL溶液
C.称取12.9gNa2CO3•10H2O固体溶于水配成450mL溶液
D.量取90mL0.5mol/LNa2CO3溶液加360mL水稀释