请写出一个解为x=2的一元一次方程:( )。
2x=4(答案不唯一)
I wasn't sure if he was really interested or if he ________ polite.[ ]
A. was just being
B. will just be
C. had just been
D. would just be
新农保人口调查摸底的内容主要有()
A.农村居民人口总数,各年龄段的人口构成
B.60周岁以上人员的家庭成员及状况
C.农村重度残疾人等缴费困难群体人口及状况
D.参保申请人家庭经济状况