It took me a lot of time _____ my homework. [ ]
A. finish
B. to finish
C. finishing
答案:B
下肢水肿,面白神疲,腰膝酸冷,舌淡苔白滑,脉沉迟无力。宜诊为
A.肾虚水泛证
B.肾阳虚证
C.肾不纳气证
D.脾肾阳虚证
E.心阳虚证
将一个小磁针放在地磁北极的点上:那么小磁针N极的指向是[ ]
A. 指北
B.指南
C. 竖直指向空中
D.竖直指向地面