口服硫酸亚铁含铁量为( )
A．l0％
B．20％
C．30％
D．40％
参考答案：B
She ______ as an animal trainer since 2003. [ ]
A. has worked
B. works
C. will work
D. worked
如出票人一年内累计签发空头支票（）次（含）以上，开户银行有权停止向其出售支票。
A、1
B、2
C、3
D、5
