采用备抵法估计坏账损失时，可使用（）方法。
A.应收账款余额百分比法
B.账龄分析法
C.销货百分比法
D.直线法
E.工作量法
参考答案：A, B, C
(2013·西安一中月考)As ________ unemployment is very high at the moment，it's very difficult for people to find ________ work.
A．the；/
B．/；/
C．the；a
D．an；the
There is a lot of delicious food ,so please help _____.
A．you
B．your
C． yourself
D．it
