正、负迁移是相互对立的，它们不可能同时出现。（）

听力原文：W: Hello. What's all this then, Harry?M: What's all what? I'm making a cake.W: Yes. We can see what you're up to. Obviously you're making a cake. What else would you be doing with a cake tin and a rolling pin on the table and the place absolutely covered in flour? Yes, we can see what you're doing. But why are you doing it?M: Well, I just decided I'd try and make one for a change instead of buying one. Anyway this is going to be a rather special sort of cake. You can't buy them like this. And while you're here, Doris, do you mind beating up half a dozen eggs in that blue bowl over there? You'll find a fork and egg whisk, whichever you prefer, in the drawer on the left.W: OK. I don't mind. But what's so special about this cake?M: It's a surprise cake.W: A surprise cake?M: Yes. Doris, don't forget to add five spoons of sugar.W: No, dear. But tell us about this surprise cake.M: Well, it was an idea I had while I was lying in bed last night.W: Do you usually think of food in bed?M: I wasn't thinking of food. I decided to have a party for some old friends of mine, but I want to give them a surprise.W: What kind of surprise?M: Can you add a half of a pint of cream to that, Doris? That's right, drip it in slowly and then beat it up again until it becomes all sticky. That's the way.W: I have made a cake before, you know. Now, come on, what's the surprise?M: Well, it's quite simple, really. You see, I serve the cake with candles on it. Then I switch out the lights and I slip out of the room. But before this I tell them that they must count to twenty before trying to blow out the candles and they'll get a surprise.W: And then?(Explosion effect)(20)A．Beat up half a dozen eggs.B．Add five spoons of sugar.C．Add half a pint of cream.D．Buy some candles. 点击查看答案

《汽车金融公司管理办法》规定，经银监会批准，汽车金融公司可以从事的业务有下列哪些.接受境内公众存款.提供购车贷款.发行金融债券.代理政策性银行业务 点击查看答案