如下图所示，将烧瓶内水沸腾时所产生的水蒸气通入试管A中，试管A放在装冷水的容器B内，过一段时间，观察到试管A中产生的现象是____ ，同时看到温度计C的示数升高，这个实验说明了试管A中发生物态变化时要____ 热量．

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Do you think of your parents? "Yes, of course," you may answer, "I buy a present for my mother on 1. And I give my father a present on Father's Day, 2. "Then what about the other days of a year? Always 3 to think of your parents, not just on some important days.

    I have a friend who 4 alone, because her parents live in another city. One day I went to see her. We had a nice chat. Then she wanted to make a 5. She dialed the number, but then she put the phone 6. After about ten seconds, she dialed the number again, "Hi, Mum……"

    Later I asked, "Why did you dial the number 7?" She smiled, "My parents are old. They can't get close to the telephone 8. I always do so when I call them. I just want to give them 9 time to answer the call."

    My friend is a good girl. She is always 10 her parents. You also want to be a good child, right? So why not learn from her?

阅读下文，回答相关问题。
       ①我们过了江，进了车站。我买了票，他忙着照看行李。行李太多了，得向脚夫行些小费才可过去。他便又忙着和他们讲价钱。我那时真是聪明过分，总觉得他说话不太漂亮，非自己插嘴不可，但他终于讲定了价钱；就送我上车。他给我拣定了靠车门的一张椅子；我将他给我做的紫毛大衣铺好坐位。他叮嘱我路上小心，夜里要警醒些，不要受凉，又嘱托茶房好好照应我。我心里暗笑他的迂；他们只认得钱，托他们只是白托！而且我这样大年纪的人，难道不能料理自己么？唉，我现在想想，那时真是太聪明了！
       ②我说道：“爸爸，你走吧。”他往车外看了看说：“我买几个橘子去。你就在此地，不要走动。”我看那边月台的栅栏外有几个卖东西的等着顾客。走到那边月台，须穿过铁道，须跳下去又爬上去。父亲是一个胖子，走过去自然要费事些。我本来要去的，他不肯，只好让他去。我看见他戴着黑布小帽，穿着黑布大马褂，深青布棉袍，蹒跚地走到铁道边，慢慢地探身下去，尚不大难。可是他穿过铁道，要爬上月台，就不容易了。他用两手攀着上面，两脚再向上缩；他肥胖的身子向左微倾，显出努力的样子，这时我看见他的背影，我的泪很快地流下来了。我赶紧拭干了泪。怕他看见，也怕别人看见。我再向外看时，他已抱了朱红的橘子往回走了。过铁道时，他先将橘子放在地上，自己慢慢爬下，再抱起橘子走。到这边时，我赶紧去搀他。他和我走到车上，将橘子一股脑儿放在我的皮大衣上。于是扑扑身上的泥土，心里很轻松似的。过一会说：“我走了，到那边来信！”我望着他走出去。他走了几步，回头看见我，说：“进去吧，里面没人。”等他的背影混入来来往往的人里，再找不着了，我便进去坐下，我的泪又来了。

- Do you like           ?  - Yes, I do.