—Your room is very untidy. Please________ your things, Mike.

—OK, Mum. I will do it at once.

A．put on

B．put down

C．put up

D．put away

伤寒的病变主要累及的部位是()

A．脾脏

B．肠系膜淋巴组织

C．回肠末端淋巴组织

D．骨骼肌

E．脑膜