北方的冬天可以看到户外的人不断的呼出“白气”，下列解释正确的是（）A．“白气”是人呼出的水蒸气B．“白气”是空气中的水蒸气C．是空气中的水蒸气遇冷液化成的小水珠D．是人呼出的水蒸-物理

更多内容推荐

• BAre you happy? Do you remember a time when you were happy? Are you seeking happiness today?Many hav
• CA school in Nanjing plans to order Korean-style school uniforms (校服) for students, but parents were
• Across the United States, there are several places where two independent towns grew together to beco
• C In the 1920s demand for American farm products fell, as European countries began to recover from W
• 第二部分阅读理解（共两节，满分 40分）第一节（共15小题；每小题2分，满分30分）阅读下列四篇短文，从每小题后所给的A、B、C、D四个选项中，选出最佳选项。并在答题卡上将该选项-英语
• 夏天、从冰箱中取出瓶装矿泉水，过一会儿，会发现瓶外壁“出汗”，这是（）A．水从瓶中渗出来的结果B．空气遇冷液化的现象C．空气中的水蒸气遇冷液化的现象D．空气中的水蒸气遇冷凝华-物理
• 电冰箱利用制冷剂作为热的“搬运工”，把冰箱冷冻室里的“热”“搬运”到了冰箱外面．制冷剂是一种很容易汽化的物质．冰箱是利用制冷剂汽化时吸热、液化时放热，在系统内循环流动，达-物理
• CImagine a world in which there was suddenly no emotion--a world in which human beings could feel no
• DThe following are the world-renewed attractions in London, so don’t miss them while touring there.S
• 寒冷的冬季，我们能够看到呼出的“白气”，而炎热的夏天却看不到，请解释这是为什么？-物理
• BIn 1605 some Englishmen planned to kill their king, James I, because they thought he was a bad man.
• 第二节：完形填空（共20小题；每小题1.5分，满分30分）阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。Your friends might be in Austral
• BSave the AnimalsAnimals are natural resources that people have wasted all through our history.Anima
• Some names have special meanings in popular American expressions. One day, an average Joe was walkin
• BOnce a New Zealand teacher asked where I live. “In the white building,” I answered.“At our universi
• 以下现象解释正确的是（）A．洗澡时，房间内充满的“白气“是水蒸气B．矿泉水瓶盖周围的凹凸花纹是为了增大摩擦C．用瓶盖起子开啤酒瓶盖，是为了省距离D．饮料吸管的一端剪成斜的，是-物理
• D Antarctica is the southernmost place on Earth, and it is larger than the United Sates and 95% of i
• 下列说法正确的是（）A．雪是水蒸气凝结成的小水滴B．露是小冰晶熔化成的小水滴C．霜是水蒸气凝华成的小冰晶D．雾是水蒸气凝华成的小冰晶-物理
• 寒冷的冬天，人在室外讲话时吐出的“热气”能形成“白气”；而炎热的夏天室内开空调时，空凋吐出“冷气”的过程中，也能看到“白气”，这是为什么呢？请你仿造下面的示例解释上述两种-物理
• EExtreme sports and the movie Lord of the Rings are the two things that come to mind when one talks
• C Have you ever played the game Hot Potato? Jon Scieszka and a team of 13 popular children’s book au
• C Every once in a while, it is necessary to take a step back in order to take a long, hard look at w
• B Home schooling offers other unforeseen advantages as well. One of these might be more available ti
• 第二节：完形填空（共20小题；每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项。并在答题卡上将该项涂黑。Th-英语
• 下列现象能证明空气中有水的是（）A．打开热水瓶盖，瓶口出现白雾B．白色硫酸铜粉末敞口放置在空气中变蓝C．人对着镜子哈气，镜子表面起雾D．蜡烛火焰上罩一干冷烧杯，烧杯内壁出现-物理
• 第二节：完形填空 (共20小题，每题1分, 满分20分)阅读下面短文，掌握其大意，然后从21-40各题所给的四个选项（A、B、C和D）中，选出最佳选项。With the introduction of
• B Imagine this: your child has just been involved in an emergency (紧急事件). You call 911. The medical
• 《扬子晚报》2004年5月21日A4版报道了一则新闻（标题：氮气泄露，夏现冬景）．本报讯：昨晚，南京市建宁路上一停车场内发生氮气泄露事故，现场周围“寒气”逼人，车厢挂起冰柱，地面结-八年级物理
• 夏天，从冰箱里拿出的苹果，过一会，表面会“出汗”，这种现象是______，此过程要______．（选填：“吸热”或“放热”）-物理
• 第三部分：阅读理解（共两节，40分）第一节：（共15小题；每小题2分，共30分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。AExperie-英语
• We arranged that Kissinger would fly to Vietnam early in July and then stop in Pakistan on the way b
• 第四节：阅读理解（共20小题，每小题2分，满分40分）阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。AScience Daily -------- Dutch ecologis
• 自2008年4月以来，湛江这个美丽的城市就成功开发使用节能减排能源的液化天然气（LNG）环保公交车，成为了全国率先批量使用这一新能源的城市，是抢滩低碳生活、低碳经济的好举措-物理
• C Why should you tour Spain with SpainExchange?◇We design and personalize(个性化)your tour to fit your
• At least 77 were wounded when hundreds of army soldiers and anti-government protesters (抗议者)clashed（
• D When companies do business overseas, they come in contact with people from different cultures. The
• 夏天我们吃冰棍时，撕开冰棍包装纸，会发现冰棍冒“白气”，如图所示．这是由于冰棍周围空气中水蒸气遇冷发生______现象而形成的．根据你的观察，冰棍冒出的“白气”是向______的（-物理
• 牙科医生用来观察病人牙齿的小镜子，要放在火上烤一下才放进病人的口腔中，医生这样做是为了[]A．消毒，防止将病毒带入口中B．把镜面上的水分烘干C．避免病人感觉镜子冷D．防止口-八年级物理
• DIf you have a chance to go to Finland, you will probably be surprised to find how “foolish” the Fin
• In tough economic times, school counselors (顾问) don’t just wait for students to come to their office
• 第三部分: 阅读理解(共20小题；每小题2分，满分40分)。阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。 ADo you enjoy reading-
• 第三节完形填空：（共20小题，每小题1.5分，满分30分）阅读下面短文,掌握其大意,然后从21-40各题所给的四个选项(A、B、C和D)中,选出最佳选项。 A young student was on
• C For a girl who's interested in fashion, what would be the dream job for success? Being a mode
• B Many people say that the United States is a paradise for the children, a struggling field for the
• EShould struggling students be banned from clubs and sports?Getting a bad grade in Rockingham, Vt. c
• BDon't believe all of the stereotypes (模式化的形象) you may have heard about Americans．Even the ones
• 夏天打开冰箱门，常可看到冷冻室里冒出一股白雾，这是：[]A、冰箱里原有的水蒸气凝结成的小水滴B、冰箱内食物中的水分遇到高温空气后，蒸发形成的水蒸气C、空气中的水蒸气降温-九年级物理
• CParis has the Eiffel Tower; New York has the Statue of Liberty; and Brussels, the MannekenPiss.Thin
• BUnfortunately, concerned about instability in the job market, many students are worried about facin
• 李秋同学在厨房帮妈妈做饭时观察到了一些现象，并用所学物理知识进行了解释，其中解释错误的是（）A．打开电冰箱时冒出的“白烟”，是冰箱内蔬菜水果等蒸发产生的水蒸气B．高压锅做-物理