Many students have to______ their hobbies because of their busy school work.

A．stay up

B．put up

C．give up

D．look up

关于民用建筑构造要求的说法，错误的是（）。

A.阳台、外廊、室内回廊等应设置防护

B.栏杆，其垂直杆件间的净距不应大于0.11m

C.室内楼梯扶手高度自踏步前缘线量起不应大于0.80m

D.有人员正常活动的架空层的净高不应低于2m