— Both David and his sister left school when they were only 11.

— No wonder            of them is poor –educated.

A．either

B．both

C．neither

D．none

累计外汇敞口头寸比例等于（）。

A.累计外汇敞口头寸÷资产余额×100%

B.累计外汇敞口头寸÷资本余额×100%

C.累计外汇敞口头寸÷资产总额×100%

D.累计外汇敞口头寸÷资本净额×100%