题目

根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 The Internet has opened up a whole new online world for us to meet, chat and go where we've never been before. But just as in face to face communication, there are some rules of behavior that should be followed when on line.Imagine how you'd feel if you were in the other person's shoes. For anything you're about to send: ask yourself, “Would I say this to the person's face?” If the answer is no, rewrite and reread. If someone in the chat room is rude to you, yo下列各物质物质的量都为1mol，完全燃烧生成二氧化碳和水所消耗相同条件下氧气的量最多的是（　　） A、CH4B、CH3CHOC、C2H5OHD、CH3COOH