—I'm trying to ________.It's really hard, you know.
A:turn it on
B:put it off
C:give it up
D:take it out
When the dog attacked me, I picked up a stick and d____ myself.
下列商鞅变法措施中有利于确立封建地主阶级政治地位的有( )
①实行二十等爵制 ②实行连坐法
③废除世卿世禄制 ④“燔诗书而明法令”
在滨海地区、平原地区、低海拔的河谷地区,城市比较多说明( )