Justin Bieber has many good songs. They are_______ with young people.

A．modern

B．beautiful

C．easy

D．popular

下列哪条神经损伤后出现“腕下垂”()

A．尺神经浅支

B．桡神经浅支

C．桡神经深支

D．正中神经

E．尺神经深支