题目内容
17．A principal in Manhattan informed parents that there would be no more homework for the public school's students．And then came the arguments---not from teachers，but from parents．Some said they would transfer their children to another school．Some said they were finding online sources of homework for their children．They were not convinced by the explanation from Principal Jane Hsu about the negative effects of homework on young children，including lack of time for other activities and family time，and loss of interest in learning．Hsu suggested children should spend their time on activities that had been found to be good for their academic，social and emotional development．As a supporter of Hsu's approach，I wonder how many of the parental arguments occur not because of what children will miss out on，but because parents themselves no longer feel confident about their ability to help their children develop without highly structured activities to guide them．
I'm reminded of a meeting at the school my younger daughter was about to start when she was 6．The head of the school met with parents to say that she was also considering doing away with homework．One mom objected because homework was her"special time"each day with her child when they could sit down together to go through the work．The head of the school appeared surprised at this．She gently suggested that the mother should read to her child，or that they should cook dinner together．
It's been sad to see that kids，between their structured soccer practices and their homework，have very little time to play．But it's even sadder to see the parental nervousness around what might happen to a third-grader who has more time to create，think，read，interact with others，or imagine．What might happen，I believe，must be more happiness，more energy and better physical fitness．
32．From the passage，we knowB．
A．teachers are strongly opposed to giving no homework to their students
B．the idea of no homework has led to a heated debate
C．children greatly benefit from the idea of no homework
D．other activities have taken the place of the homework
33．Why did one mom object to the idea of no homework for kids？C
A．Her child might lose interest in learning．
B．Her child might have less time to think．
C．She enjoyed the time doing homework with her child．
D．Homework is good for children's academic development．
34．What is the author's attitude towards Principal Jane Hsu's suggestion？B
A．Indifferent．
B．Positive．
C．Negative．
D．Critical．
35．The passage is mainly aboutD．
A．whether the parents should transfer their children to public school
B．the benefits of doing homework
C．the necessity of changing the education system
D．whether the students should do homework after school．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了没有作业的想法导致了一场激烈的争论．
解答 32．B．细节理解题．根据第一段A principal in Manhattan informed parents that there would be no more homework for the public school's students．And then came the arguments可知没有作业的想法导致了一场激烈的争论；故选B．
33．C．细节理解题．根据第三段One mom objected because homework was her"special time"each day with her child when they could sit down together to go through the work可知一个妈妈反对孩子不做作业因为她很享受和孩子一起做作业的时间；故选C．
34．B．细节理解题．根据第二段As a supporter of Hsu's approach，I wonder how many of the parental arguments occur not because of what children will miss out on可知作者对Jane Hsu校长的建议是支持的；故选B．
35．D．推理判断题．根据第一段A principal in Manhattan informed parents that there would be no more homework for the public school's students．And then came the arguments可知文章主要是关于是否学生放学后应该做作业；故选D
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
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2．We see the world in three dimensions．Now，we can print in three dimensionst，too，thanks to a manufacturing process：3D priming．
3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file．
The creation of a 3D printed object is achieved using additive piocesses．In an additive process an object is created by laying down successive （连续的 ） layers of material until the object is created．Each of these layers can be seen as a thinly sliced horizon till （水平的）cross-section of the eventual object．Today's 3D printers are being used to print everything from design models to jewelry，crafts，product parts，body parts，and even food．
3D printing starts with making a virtual design of the object you want to create．This virtual design is for instance a CAD （Computer Aided Design） file．This CAD file is created using a 3D modeling application or with a 3D scanner （to copy an existing object）．A 3D scanner can make a 3D digital copy of m object．
You will have to prepare a 3D model before it is ready to be 3D printed．This is what they call slicing．Slicing is dividing a 3D model into hundreds or thousands of horizontal layers and needs to be done with software．
Sometimes a 3D model can be sliced from within a 3D modeling software application．It is also possible that you are forced to use a certain slicing tool for a certain 3D printer，
When the 3D model is sliced，you are ready to feed it to your 3D printer．This can be done via USB．SD or WiFi．It really depends on what brand and type 3D printer you have．
When a file is uploaded in a 3D printer．the object is ready to be 3D printed layer by layer．I'he 3D printer reads every slice（2D image） and creates a three dimensional object．
Before you pick up a 3D printer and experimenting in the 3D world，consider how big the objects you might want to create，If your goal is to print foot-long rulers，you'll fall short of that goal if the printer you choose can only handle objects smaller 6inches in height and width．
Another reality check is print speed．，You'll be able to knock out a days worth of chores（琐事）while the primer is running，with a typical 4-inch model requiring as many as 12 hours to print．As with ordinary printers，print speed also depends on how well it prints．
Title：A liegiliners'Gmk to 3D Printing．
3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file．
The creation of a 3D printed object is achieved using additive piocesses．In an additive process an object is created by laying down successive （连续的 ） layers of material until the object is created．Each of these layers can be seen as a thinly sliced horizon till （水平的）cross-section of the eventual object．Today's 3D printers are being used to print everything from design models to jewelry，crafts，product parts，body parts，and even food．
3D printing starts with making a virtual design of the object you want to create．This virtual design is for instance a CAD （Computer Aided Design） file．This CAD file is created using a 3D modeling application or with a 3D scanner （to copy an existing object）．A 3D scanner can make a 3D digital copy of m object．
You will have to prepare a 3D model before it is ready to be 3D printed．This is what they call slicing．Slicing is dividing a 3D model into hundreds or thousands of horizontal layers and needs to be done with software．
Sometimes a 3D model can be sliced from within a 3D modeling software application．It is also possible that you are forced to use a certain slicing tool for a certain 3D printer，
When the 3D model is sliced，you are ready to feed it to your 3D printer．This can be done via USB．SD or WiFi．It really depends on what brand and type 3D printer you have．
When a file is uploaded in a 3D printer．the object is ready to be 3D printed layer by layer．I'he 3D printer reads every slice（2D image） and creates a three dimensional object．
Before you pick up a 3D printer and experimenting in the 3D world，consider how big the objects you might want to create，If your goal is to print foot-long rulers，you'll fall short of that goal if the printer you choose can only handle objects smaller 6inches in height and width．
Another reality check is print speed．，You'll be able to knock out a days worth of chores（琐事）while the primer is running，with a typical 4-inch model requiring as many as 12 hours to print．As with ordinary printers，print speed also depends on how well it prints．
Title：A liegiliners'Gmk to 3D Printing．
| What is 3D printing？ | 3D printing is a process of making three-dimens ion objects out of a digital file． An object created with 3D printing （71）consistsof a number of layers of material． |
| How does 3D printing （72）work？ | The first （73）stepis to make a virtual design of your （74）desire\wanted\targetobject． A（75）prepared3D model is slictxl into a hujzc number of layers with software or some （76）toolfor a certain 3D printer． The sliced model is （77）fedto a 3D printer The 3D printer （78）forme\makesthe layers into an entire object step by step． |
| What else do you need to know？ | The （79）sizeof what you intend to make is a factor in your choice of a 3D printer， Prim speed is associated with print （80）quality． |
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