He ___ his students’ respect after worki

-I'm afraid that I can't finish the task as soon as planned.

-________.[ ]

A．Don't be afraid  

B．Don't mention it

C．I suppose so  

D．Take your time

已知函数f（x）=mx²+lnx-2x在定义域内是增函数，则实数m范围为______．

体内甲基直接供体是（）

A.N10－甲基－FH4

B.S－腺苷蛋氨酸

C.胆碱

D.蛋氨酸

E.肾上腺素

太阳阳明证的主方是（）

A.大承气汤

B.调胃承气汤

C.白虎汤

D.麻子仁丸

E.小承气汤

教育法