--- I must be off at once. I’m late.

--- You ______ to the school because today is Sunday..

A．needn’t to go

B．don’t need go

C．don’t need going

D．needn’t go

中度脱水的临床表现哪项是不正确的（）

A.失水量为体重的5%-10%

B.皮肤弹性较差

C.眼窝、前囟明显凹陷

D.四肢厥冷

E.尿量明显减少