患者，男，55岁，患严重的背部疼痛及不适，3个月内体重下降3kg。实验室检查血清总蛋白110g/L，清蛋白39g/L，血清蛋白电泳见γ球蛋白区带中间部分显著深染，其扫描峰高于清蛋白峰。

其血清蛋白电泳中所见的典型蛋白峰称为（）

A.本周蛋白

B.IgM

C.M蛋白

D.免疫球蛋白轻链

E.免疫球蛋白重链

—How about going hiking this weekend?

—Sorry. I would rather _______ than _______.[ ]

A. to stay at home; to go out

B. stay at home; to go out

C. stay at home; go out

D. staying at home; going out