非保本浮动收益型理财产品，保证（）。
A.本金安全
B.收益安全
C.无风险
D.A和B
参考答案：D
--You’ve made great progress in your studies of English, haven’t you? --Yes, but much ______.
A．remains to do
B．is remained to do
C．remains to be done
D．is remained to be done
