题目

本金3 000元,每月复利一次,一年后得到本利和3 380元,月利率是_________. 答案：1%解析:由3 380=3 000×(1+r)12,得1+r=,用对数或计算器得1+r=1.01,r=1%.Tom pretended ______ it；but in fact，he knew it very well.A．not to listen toB．not to hear aboutC．not to have heard aboutD．not to be listening to