电选中，只获得负电的矿物叫做（）矿物。
A、正整流
B、负整流
C、全整流
D、半整流
参考答案：B
The young trees should______ as often as possible.
A．take care of
B．be take care of
C．be taken care of
D．be taken care
采取借款人自主支付的，贷款人应审核支付申请的信息是否与商务合同相符。( )
