题目

下列叙述正确的是( ) A．一定温度和压强下，各种气态物质体积的大小主要由构成气体的分子大小决定 B．一定温度和压强下，各种气态物质体积的大小主要由构成气体的分子数决定 C．不同的气体，若体积不同，它们所含的分子数一定不同 D．同温同压下，同体积的任何气体单质所含的原子数相同 答案：BTo: Carla@yahoo. comFrom: Eric@163. comSubject: Help!Date: 15/04/2019: 05 AMDear Aunt Carla,I'm having a problem with my classmate, Joan, at school. The other day I wrote an email to another classmate, Beth, in which I said something about Joan that perhaps wasn't very nice. Unluckily, when Beth was writing back to me, she sent it to HYPERLINK "mail to: Joan@163. com, " Joan@163. com, which is Joan's email address!Now Joan is really angry with me and won't talk to me, and Beth is unhappy as well. She has said sorry to me a hundred times already, but the harm is done. I feel bad, because I would never have said those things to Joan's face, but how do I get her to forgive（谅解）me? What should I do? To: Eric@163. comFrom: Carla@yahoo. comSubject: Some adviceDate: 16/04/2019: 30 AMDear Eric, This problem is more common than you might think!Email is very useful, but also very dangerous, as you don't know where your message might end up!First of all, you should say sorry right away to Joan. Explain that it was a mistake, and that you didn't mean to hurt her feelings. It may take time for her to be able to forgive you, but that's up to her. Then you might want to do something nice for her. Perhaps send her some flowers to show that you're truly sorry. Also, you should remember that old saying: "If you don't have anything nice to say, don't say anything at all. "And good luck!Carla1.How soon did Eric get the reply from Aunt Carla?A.In one day. B.In two days. C.In a week. D.In a month.2.Why did Eric write the email to Carla?A.To say sorry. B.To ask for advice.C.To give advice. D.To say something unfriendly.3.Carla gave ________pieces of advice to Eric.A.five B.four C.three D.two