固定资产计提折旧的基数为( )。
A.净值
B.公允价值
C.重置价值
D.账面价值
参考答案:D
已知数列{an}满足,a1=1,a2=2,an+2=,n∈N.
(1)令bn=an+1-an,证明:{bn}是等比数列:
(2)求{an}的通项公式.
It is generally accepted that ________ boy must learn to stand up and fight like ________ man. (2011·新课标全国,33)
A.a;a
B.a;the
C.the;the
D.a;/