吸附剂一旦吸入（），就很难或根本不可能被除去，这将严重损坏吸附剂的（）。
参考答案：液体、性能
I _____ to help you to do homework but I couldn’t spare any time. I _____ a composition last night and I’ll finish it today.
A．wanted; wrote
B．had wanted; was writing
C．have wanted; wrote
D．wanted; have been writing
金钥匙理财组合设计考虑的因素有（）
A.专业性
B.专属性
C.品牌性
D.合理性
E.便利性
