题目：
四、单句改错,每题1分共5分：
1. He made a trick on her by taking all the money.
2. Now plastic can take place of steel in may ways in life.
3. She apologized the teacher for losing her book.
4. He didn’t turn down for some reason.
5. I was really anxious about you. You should have left home without a word.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：对解析： 债券互换就是同时买入和卖出具有相近特性的两个以上债券品种，从而获取收益级差的行为。根据债券互换的目的不同，可以划分为：替代互换、市场间利差互换以及税差激发互换。税差激发互换的目...
