-Must we clean the classroom now?

-No, you _____.[ ]

A. must

B. needn't

C. aren't

D. must not

食少纳呆，腹胀便溏，神疲乏力，少气懒言，舌淡苔白，脉虚，应诊断为（）

A.脾阳亏虚证

B.寒湿困脾证

C.脾不统血证

D.脾气亏虚证

E.脾气下陷证