-- Is it necessary that he ____ to London but to New York?

-- I think so, but the problem is ____ he has refused to.

A．will not be sent; that

B．not be sent; that

C．should not be sent; what

D．should not sent; what

物质和能源的高消耗是（）的特征。

A.信息经济

B.数字经济

C.质能经济

D.后工业经济