人体表面皮肤疼痛最敏感的部位是()

A．手指端掌面

B．手指端背面

C．头部皮肤

D．颈部皮肤

E．腿部皮肤

I don't think Jack is a man to be ____ when we are in trouble and need his help. [ ]

A. related to

B. hoped for

C. excepted from

D. relied on