对于固定资产贷款，在风险可控的前提下，单笔支付金额小于（）万元人民币的，可采取借款人自主支付方式。
A、20
B、30
C、40
D、50
参考答案：D
我国海关于( )年开始采用H.S编码制度。
A．1990
B．1992
C．1988
D．1991
Jim fell off the bike yesterday and hurt his leg badly, so he is _____ now. [ ]
A. in hospital
B. at the hospital
C. in the hospital
D. at hospital
