调结构主要指（）。

听力原文：M: Today, I'm interviewing a young lady Alex about her feelings on how people can help save the environment. So, Alex, how do you think we can save the environment?W: By saving water.M: Well, can you explain how we can do that?W: By not using too much water when we wash dishes, take a bath, and when we do other things, like watering the plants outside.M: Oh, I think I can do that. What else?W: When drinking or eating something outside, you should keep the garbage until you find a trashcan to put it in because littering makes our planet dirty. Do you like seeing trash all over the ground?M: No, I don't. Do you have any final suggestions?W: Yes. We shouldn't waste paper because trees are being cut down to make the paper. By recycling paper, we save the forests where animals live.M: So, how can children recycle paper, I mean, everyday?W: Well, for example, when I was in kindergarten, I used to save the newspapers so that I could have things made out of them, like paper trees, instead of just throwing them away. Now, the children in our neighborhood collect newspapers once a month to take them to a recycling center.M: That's great. Well thanks Alex for your ideas.(23)A．Washing cars.B．Cleaning clothes.C．Taking a bath.D．Drinking. 点击查看答案

下列行为属于积极的财政政策的有（）。

A.增发国债1000亿元人民币
B.国家决定扩大财政赤字加强基础设施建设
C.国家决定降低存贷款利率
D.国家决定发展社会的商业保险

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