如下图所示，导热的气缸开口向下，缸内活塞封闭了一定质量的理想气体，活塞可自由滑动且不漏气，活塞下挂一个沙桶，沙桶装满沙子时，活塞恰好静止．现将沙桶底部钻一个小洞，让细砂慢慢漏出，气缸外部温度恒定不变．则（   ）

地域文化会对城市地域形态和空间结构产生影响。

A：Hello，Xiao Hong! You look a little upset. ____

B：Yes．It's  just my mom．She always nags(唠叨)me.

A：Really? What does your mother nag at you about?

B：____"Get up now…Everything must be in place…Don't forget your piano lesson…"

A：well, all mothers like saying these words to their children.

B：Also, I'm fond of pop music.____We don't have the same interest in many things.

A：____But I should say she nags at you because she cares about you．You're lucky to have such a good mother.

B：I agree with you. ____

A：That's right. Understanding is important. If your mom knows that everything is fine,  she will never nag.

阅读下文，回答问题。
                                                                                                  梨酒
       仲宾又云：向其家有梨园，其树之大者每株收梨二车。忽一岁盛生，触处皆然，数倍常年，以此不可售，甚至用以饲猪，其贱可知。有所谓山梨者，味极佳，意颇惜之。漫用大瓮储数百枚，以缶盖而泥其口，意欲久藏，旋取食之。久则忘之，及半岁后，因至园中，忽闻酒气熏人。疑守舍者酿熟，因索之，则无有也。因启观所藏梨，则化而为水，清冷可爱；湛然甘美，真佳酝也，饮之辄醉。回回国葡萄酒，止用葡萄酿之，初不杂以他物。始知梨可酿，前所未闻也。
                                                                                                                                                       选自周密《癸辛杂识》
注释①瓮：陶制的容器。②泥：涂抹。