C．清晨，草的叶子上有露水凝结D．用久了的灯泡的钨丝比新时3．如图是对一定质量的水持续加热过程中温度随加热时间变化的图像，由图像可知：水的沸点是__98__℃；水在沸腾过程中，需要不断__吸热__(选填“吸热”或“放热”)，其温度__保持不变__。第3题图题图4．如图是草叶上出现的露珠，露珠的形成是__液化__现象，形成的过程中需要__放__(选填“吸”或“放”)热。5．张家界景区雨后云雾缭绕，犹如仙境。关于雾，下列说法中正确的是( D ) A．雾是水蒸气 B．雾是山中冒出来的烟 C．雾是水蒸气凝固形成的 D．雾是水蒸气液化形成的6.人游泳上岸以后，风一吹感觉身上很凉。这是因为( C )A．水中的温度比岸上的气温高B．人的皮肤产生的错觉C．人身上的水分蒸发，要从人体吸热D．风把身上的热量带走了．下列说法正确的是( B ) A．春天，早晨经常出现大雾，是汽化现象 B．夏天，从冰箱中取出的易拉罐过一会儿表面出现水珠，是液化现象C．深秋，枯草上出现的霜，是凝固现象
D．冬天，窗玻璃上会出现冰花，是汽化现象8.如图甲、乙所示，是在“探究水的沸腾”实验时，两组同学分别安装的实验装置，图丙是他们根据实验数据绘制的水的温度跟时间的关系图像。根据有关信息，下列说法中正确的是( C )A．图线a对应的是乙实验中的数据B．图线b对应的是甲实验中的数据C．水的沸点跟水的多少无关D．到100 ℃时温度不再上升是因为水不再吸热9.夏天，人们常吃雪糕解暑，剥开雪糕包装纸时，雪糕周围冒“白气”，下列说法正确的是( C ) A．吃雪糕解暑，是因为雪糕熔化时要放热 B．吃雪糕解暑，是因为雪糕汽化时要放热 C．雪糕周围冒“白气”是液化现象 D．雪糕周围冒“白气”是汽化现象10．下列关于水沸腾的实验说法正确的是( B ) A．水沸腾时冒出的“白气”是水蒸气 B．水的沸点随气压的降低而降低 C．水沸腾的现象只发生在液体的表面 D．水沸腾后继续加热，水的温度会不断升高11.取一只大的注射器吸进适当的乙醚，用橡皮帽堵住注射器的小孔，向拉
励志小故事(12)
必修3 Unit 2 高考试卷分块专练
Ⅰ.完形填空
Not many people can say they"ve been hit by a vehicle, but I can.I rode my bike to my daily __1__ practice in a gym last summer.I crossed the street as the light __2__； however, a young woman __3__ me with her fancy racing car.Like James Bond in a very __4__ situation, I rolled across the hood (引擎盖) onto the other side of the car.You may wonder __5__ a woman driver could be so careless.The truth is that the woman was on her phone while driving, so her __6__ was clearly drawn away from driving, which caused the accident.
After assessing my __7__ and believing that all my bones were undamaged in any way, I __8__ and talked to the woman driver.I could tell she was obviously quite __9__.So was I．After assuring her of my wellbeing, we __10__ ways.
__11__ my surprisingly shabby bicycle, I went on my way.I rode into the __12__ 20 minutes late.Upon my arrival, my tennis coach and friends asked me why I was late.Nervously, I __13__ the car accident.Everyone seemed to be far more __14__ than I was.In fact, I __15__ joked, saying that now I know how the squirrels feel after a nice escape.
After this __16__， I realize the importance of bike lanes and watching out for pedestrians.
Now as I drive, I always __17__ for people on bikes so that they do not __18__ the same fate (命运) that I did.__19__， for all the bikers and runners out there, watch out for cars, as one small mistake could __20__ an unforgivable mistake.
语篇解读：本文是一篇记叙文。“我”在骑车去体育馆参加网球训练的途中，被一辆跑车撞到，幸运的是“我”的骨头没有受伤。通过这起事故，“我”意识到了自行车车道和注意行人的重要性。
1．A.football B．tennis
C．volleyball D．badminton
解析：选B 根据第三段第三句中的“my tennis coach”可以判断，“我”骑自行车到体育馆参加网球训练，故B项正确。
2．A.permitted B．broke
C．appeared D．exploded
解析：选A 根据该句中的“I crossed the street”可知，“我”穿过了街道；根据常识可以判断，此举是在信号灯的允许(permitted)下进行的，故A项符合语境。
3．A.passed B．greeted
C．hit D．met
解析：选C 根据该句的语境并结合第一段第一句中的“been hit by a vehicle”可知，一位年轻的女士开着跑车撞到了“我”。C项意为“撞击”，符合语境。
4．A.romantic B．humorous
C．awkward D．dangerous
解析：选D 根据该句语境可知，就像詹姆斯·邦德在非常危险的(dangerous)情况下那样，“我”从引擎盖上滚到了车的另一边。