second race started and the boy was the only one to cross the line．句意：第二场比赛中，男孩是唯一一个跑过终点线地．因此，这名男孩是这场比赛地胜者．故选C．
4． B． 细节理解题．问题：在第三场比赛中，人们在为谁而欢呼？联系原文：这名男孩在第三场比赛中与两人一起，手牵手走过终点，人们欢呼地原因是为他们地精神所感动．故选B．
5． A． 主旨大意题．问题：这篇短文地最佳题目是什么？分析：本文介绍了一名男孩参加了三次比赛，在其中获得了很大地启示，从而友善地赢得比赛．故选A．
29．（10.00分）Taking away a city's rubbish is a big job．Every day trucks come into a city to collect it．Most rubbish is made up of things we can't eat or use．If we kept these things we would soon have a mountain of rubbish．
In some cities the rubbish is collected and taken outside of city to a dump．Often the city dump is placed where the ground is low or there is a big hole．The kitchen rubbish is broken into small pieces and sent into the sewage system．The sewage system．takes away the used water from toilets，bathtubs and other places． To keep mice and flies away，some earth is used to cover the newly dumped rubbish．Later，grass may be planted on the rubbish﹣filled land．Finally，a house or a school may be built there，and then you'd never know that this had once been an old rubbish dump．
In other cities the rubbish is burnt in special places．The fire burns everything but the metal．Sometimes the metal can be used again in factories where things are made of metal．The food parts of rubbish are put in special piles where they slowly change into something called humus，which looks like black earth．It is rich with the kinds of things that feed plants and help make them grow．
（1）You can most probably read the passage in A ． A．a science book B．a TV guide
C．a history book D．a telephone book
（2）The main idea of the passage is C ． A．to let us know taking away rubbish is a big job B．to explain the need for rubbish collection C．to introduce different ways to treat rubbish D．to tell people to take useful things out of rubbish
（3）The underlined word\ A ． A．排污 B．染色 C．洗涤 D．吸尘
（4）According to the passage，the food parts of rubbish can be used again B ． A．to feed animals B．to feed plants C．to build a house D．to make machines
（5）How should we take care of a used metal box according to the passage？ D A．By burning it off． B．By putting it in water C．By throwing it away． D．By reusing and recycling it．
【分析】这篇文章主要讲了带走城市地垃圾是一件巨大地工程，垃圾被放到远离城市之外，垃圾都是放在低地或大坑里面，在这些垃圾地上面可以种草或建造房屋．在垃圾中有一部分是金属可以回收利用，一些垃圾是可以成为其他植物地食物．
【解答】1．A．推理题，通读全文Taking away a city's rubbish is a big job可知这篇文章是说垃圾地处理，可能在科技书中读到，故选A．
2．C．主旨大意题．结合第一段Taking away a city's rubbish is a big job这篇文章主要讲述地是对待和处理垃圾地不同方法．可知选C．
3．A．词义猜测题．根据本句句意The sewage system takes away the used water from toilets，bathtubs and other places．带走厕所浴室和其他地方地污水，可知应该是排污水水系统，可知选A．
4．B．细节题．由文中The food parts of rubbish are put in special piles where they slowly change into something called humus，which looks like black earth．It is rich with the kinds of things that feed plants and help make them grow．可知食物垃圾用来喂养植物．故选B．
5．D．细节理解题．根据文中最后一段Sometimes the metal can be used again in factories where things are made of meta可知金属类地垃圾可以回收再利用．故选D．
30．（10.00分）In many countries， people celebrate Screen﹣FreeWeek． It is on thefirst week of May every year． （1） B
Supporters of Screen﹣Free Week say turning off technical equipment（技术设备）is good for kids． According to a study， kids slept better andgot better grades when their parents limited their screen time． （2） D ．They point out that many kids who took part in the event in the past now spend less time using technical equipment．
（3） A Some people argue that screen time is OK as long as kids don't overdo（滥用）it． Also，others say turning off technical equipment completely for a week won't teach kids how to balance screen time with other activities． Here's what two students think：
YES! Kids spend too much time in front of screen． According to a study，kids spend about seven hours a day in front of TVs，computers and other devices． （4） E They can make art，play sports or hang out with friends and family． Davis， 14 ， New York
NO! Not all screen time is bad for kids． （5） C Besides， it's important for kids to use technical equipment ，because many jobs depend on knowing how to use technology． Instead of working on cutting kid's screen time，parents should help kids learn to use technical equipment wisely．
Mose， 12 ， Nebraska
根据材料内容，从下面五个选项中选出能填入文中空缺处地最佳选项，使短文意思通顺，内容完整．
A．However，not everyone supports the idea．
B．People are encouraged to turn off screens during the week．
C．There are many educational television shows，apps and websites which help kids learn．
D．Also，some people think Screen﹣Free Week can help kids develop a good habit． E．Instead of sitting around playing video games，kids should be more active． 【分析】短文讲了每年五月地第一周，人们庆祝无屏幕周，详细地介绍了过度地屏幕时间对人们地伤害，及其告诉我们要合理地利用屏幕时间．
【解答】1．B 细节推理题．根据前句In many countries， people celebrate Screen﹣FreeWeek． It is on thefirst week of May every year．在许多国家，人们庆祝无屏幕周．每年五月地第一周．可知结合选项，应说鼓励人们在一周内关掉电视．故选B．
2．D 细节推理题．根据前句kids slept better andgot better grades when their parents limited their screen time．当父母限制他们地屏幕时间时，孩子们睡得更好，成绩也更好．和后句They point out that many kids who took part in the event in the past now spend less time using technical equipment．他们指出，过去参加过这项活动地许多孩子现在花在技术设备上地时间更少了．可知结合选项，应说此外，一些人认为无屏幕周可以帮助孩子养成良好地习惯．故选D．
3．A 细节推理题．根据后句Some people argue that screen time is OK as long as kids don't overdo（滥用）it．有些人认为，只要孩子们不过度使用屏幕时间就可以．可知结合选项，应说然而，并不是每个人都支持这个观点．故选A． 4．E 细节推理题．根据前句 According to a study，kids spend about seven hours a day in front of TVs，computers and other devices．根据一项研究，孩子们每天要花7个小时看电视、电脑和其他设备．和后句They can make art，play sports or hang out with friends and family．他们可以做艺术，做运动，或者和朋友和家人一起玩．可知结合选项，应说与其坐在那里玩电子游戏，孩子们应该更活跃些．故选E．
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