在智能手机日益普及的当下，我们已经跨入了移动时代。智能手机五花八门的功能影响着我们的生活、社交、学习、工作、消费、休闲等

解题思路：对手机受力分析，根据平衡条件进行验证，注意不要多力也不要漏力．

若人捏手机时两手指是一左一右，则 手机受重力、两个手指的压力和竖直向上的摩擦力，
若人捏手机时两手指是一上一下，则手机只受重力和压力，
故AC正确；
故选：AC．

点评：
本题考点： 共点力平衡的条件及其应用；力的合成与分解的运用．

考点点评： 手臂和手机没有直接接触，不会对手机有力的作用，弹力属于接触力，要存在弹力必须先接触．

At present,along with the communication industry swift and violent development,the handset took important constituent also more and more popularizes.Diversifies day by day along with the handset funct...

Nowadays more and more middle school students take their mobile phone to school.It disturb the teachers very much,But should middle school students take their their mobile phone to school?
Some people agree to it,they think mobile phone is very useful,they can use it to call their friends and parents .Sometimes they listen music from their mobile phone and sometimes they play games .
But there are also many people disagree with it .they don't agree beacuse the mobile phone usually disturb the teachers and other students who like study.It may make the students being lazy ,they may do bad in their study.
In my opinion ,we shouldn't take mobile phone to school,beacause it may make us play more and study .that's my opinion.

A

1. smartphones, computers generate e-maste and is environmental unfriendly
2. if human relies more and more on smart phones smart robot and such they lose the ability to do things independently
3. it gives off radiation and cause cancer? they are really expensive?
你要我写的话那追问

解题思路：设该商场计划购进甲手机x部，购进乙手机y部，根据购进甲乙两种手机共用去15.5万元，销售后利润共2.1万元，列方程组求解．

设该商场计划购进甲手机x部，购进乙手机y部，
由题意得，

0.4x+0.25y＝15.5
0.03x+0.05y＝2.1，
解得：

x＝20
y＝30，
答：该商场计划购进甲手机20部，购进乙手机30部．

点评：
本题考点： 二元一次方程组的应用．

考点点评： 本题考查了二元一次方程组的应用，解答本题的关键是读懂题意，设出未知数，找出合适的等量关系，列方程组求解．

B


试题分析：A.搭配不当，“加快”和“质量”不搭配 C.句式杂糅，去掉“为核心”，或者去掉“围绕”，保留“以它为核心” D.成分残缺，“进入……”缺少宾语，可以补上“新阶段”。

D

High school students almost everyone has a smartphone at present.

五年级习作 　一天晚上,爸爸送给妈妈一部崭新的手机.我和妈妈都很高兴,第一个享用的当然是我啰.　　我迫不及待的拆开精致小巧的包装盒,印入眼帘的是一部红色外壳的三星牌手机,是最新款的触屏手机,宽宽的屏幕显得特别气派,红色的外衣特别惹人注意.　　别看就这么一部小小的手机,里面的功能可多了,除了最基本的通话功能外,玩游戏、听音乐、看电影、拍照、上网,样样俱全,就象是一台迷你电脑,特别是外出的时候,它给我们的生活带来了好多便揵!我听说手机的创始者最初只是为了“通音”,继他之后的又一聪明者又为其添加了“通信”,再后者则更具创新意识和创新能力的为其添加了网络功能.于是,手机与手机之间就形成了一张张网,天罗地网,而我们普普通通的人类则成了“网中之鱼”,我们这些拿着手机的人,就象是一条条游在网络上的小鱼儿.　　任何事情有好的一面就会有差的一面,手机在带给我们便利的同时,也存在很多问题,随处可见的却是那些初中生甚至小学生捧着个手机像捧着全世界一样,小心翼翼津津有味地用两只小手矫健如飞地按着,乐此不疲,简直是达到了一种“机”不离手、“机”不可失的超高境界.我觉得这样会影响到学习,所以这也应该是手机留给我们思考的地方.　　随着科技越来越发达,手机越来越离不开人们的生活,真的难以想象未来的手机会演变成什么样子.

重力感应器：根据屏幕方向而转动,游戏的左右移动；光线感应：根据光线的强弱来改变屏幕亮度,和在通话时听筒贴进耳朵时屏幕就会黑屏,避免误操作,离开耳朵屏幕又亮起（这里面包含了“距离感应器”,距离感应器的作用就只对应这一个功能）；温度感应器,就是用来监测手机电池的温度和cpu的温度的,作用个人感觉不是很大；加速感应器,压力感应器,我手机上没有,也不知道所起到的作用是什么；陀螺仪我手机也没有,也不懂；至于你所说的“电子罗盘”,其实应该叫“地磁感应器”,就像是指南针,需要额外安装程序才能启动,比如“指南针”或者“地图”的程序；一般的安卓手机的标准配备是：光线感应,重力感应,距离感应；陀螺仪,地磁感应一般的中高端都配有；至于加速感应和压力感应,没有听说过；其实日常使用手机,我们很少用到这些感应器,但是有总比没有好.

因为手机电池放电电压为3.7V,电池容量一般1500mAh（毫安时）.所以手机电池电量大约6瓦时（瓦时=安时×3.7）
一度电等于1000瓦时,所以一度电能充1000/6=166块手机电池.

Nowadays, with the increasing popularity of smart phones (智能手机), it is not unusual to find a group of people sitting around the table, each playing with their smart phones separately instead of talking with each other face to face. As is vividly shown in the picture, the old lady is serving the table disappointedly, with all the other family members absorbed in their electronic products.
There are several reasons accounting for this phenomenon. Some people may lack the ability to communicate with others or the common interest while others claim that it’s a good way to relieve stress and embarrassment in social communications. Naturally, there are still others who are heavy smart phone users and fail to break away from the addiction.
As far as I’m concerned, it is essential for us to build closer social bonds through face-to-face conversations when getting together with our relatives, friends, classmates and colleagues. I strongly recommend that you put away your smart phones in such occasions not only to show respect for others but also to enjoy the gatherings and improve your communicative skills as well.

解题思路：（1）设商场计划购进甲种手机x部，乙种手机y部，根据两种手机的购买金额为15.5万元和两种手机的销售利润为2.1万元建立方程组求出其解即可；
（2）设甲种手机减少a部，则乙种手机增加2a部，表示出购买的总资金，由总资金部超过17.25万元建立不等式就可以求出a的取值范围，再设销售后的总利润为W元，表示出总利润与a的关系式，由一次函数的性质就可以求出最大利润．

（1）设该商场计划购进甲种手机x部，乙种手机y部，由题意得


4000x+2500y＝155000
300x+500y＝21000，
解得

x＝20
y＝30．
答：该商场计划购进甲种手机20部，乙种手机30部；

（2）设甲种手机减少a部，则乙种手机增加3a部，由题意得4000（20-a）+2500（30+3a）≤172500
解得a≤5
设全部销售后的毛利润为w元．则
w=300（20-a）+500（30+3a）=1200a+21000．
∵1200＞0，
∴w随着a的增大而增大，
∴当a=5时，w有最大值，w_最大=1200×5+21000=27000
答：当商场购进甲种手机15部，乙种手机45部时，全部销售后毛利润最大，最大毛利润是2.7万元．

点评：
本题考点： 一次函数的应用；二元一次方程组的应用；一元一次不等式的应用．

考点点评： 本题考查了列二元一次方程组解实际问题的运用，列一元一次不等式解实际问题的运用及一次函数的性质的运用，解答本题时灵活运用一次函数的性质求解是关键．

解题思路：（1）设甲种手机购进x部，则乙种手机购进（155000-4000x）÷2500部，根据总利润不低于2万元建立不等式求出其解即可；
（2）设甲种手机减少m部，毛利润为y元，先求出m的取值范围，根据利润=售价-进价建立函数解析式即可．

（1）设甲种手机购进x部，由题意，得
300x+500×[155000−4000x/2500]≥20000，
解得：x≤22．
∵两种手机数量都为整数，
∴x的最大值为20．
∴乙种手机应该购进（155000-4000×20）÷2500=30部，
∴要想尽可能多的购进甲种手机，应该安排怎样的进货方案是：甲种手机购20部，乙种手机购30部．

（2）设甲种手机减少m部，毛利润为y元，由题意，得
4000（20-m）+2500（30+2m）≤160000，
解得：m≤5．
y=300（20-m）+500（30+2m），
y=700m+21000．
∴k=700＞0，
∴y随m的增大而增大，
∴m=5时，最大利润为24500元．

点评：
本题考点： 一元一次不等式组的应用；一次函数的应用．

考点点评： 本题考查了单价×数量=总价的运用及利润=售价-进价的运用，一次函数的解析式的运用，解答时建立一次函数的解析式是关键．

We can see recent year market share of Nokia in asymco 2011 report.

B

Advantages and Disadvatages of Mobile phonesAs every body knows, mobiles are playing a important part in our daily life nowadays.But they have bot advantages and disadvtanges in my opinion.First, mobiles make it convinent for people to keep in touch with each other whevere they are.Especially when they have something important.It reduces the cost for people dont have to travel a long way to get to know the things in personSecond,we can send messages by mobiles with little money,just 0.01 yuan for each short message.third, we can also play games or take photoes or listen to music on the mobiles,late we do many things on them with the development of technology.But they also have many disadvatages.we have to pay for the wrong numbers which are not for us.The radioactivites may do harm to our health.Sometimes the rings may affect others in public or at meetings

Smartphones have really changed our daily life. We can make contact with the world at any time and any place if we have such a device in our hand. However, with the increasing popularity of smartphones among young people, some, especially those who are addicted to their phones, may feel anxious once they are disconnected from them.
There are several disadvantages of using the smartphone for too long. It is now believed that using smartphones could probably cause facial skin and muscle to hang loose if people spend an increasing amount of time sitting with their heads bent and in the same position for a long time. That is horrible.
In my opinion, we students should be aware of the harm of excessive use of smartphones. And we’d better reduce the time of using smartphones in everyday life.

With the advent of a smart phone in the world's first, in 2007, Apple has made a great success, Jobs put Apple into a peak, however, all this does not end. In 2010, Apple released the world's first tablet PC, the move once again shocked the world, Steve Jobs seems to always give people a surprise, ipod, iphone, ipad, iMac, iOS, App store, iTunes, take a look at these which is not that shocked the world masterpieces, and these come from the hands of Steve Jobs, electronic products, these swept hundreds of millions of people around the world and profoundly changed the way of modern communications, entertainment and even life. . He is the second time in 1997 returned to Apple, just ten years, he put Apple in 2011 to become the world's most valuable technology company, also in 2011, Apple's highest price when it the stock market capitalization of more than Google and Microsoft combined.
Life of Steve Jobs is legendary life, he is the founder of Apple, however, he failed in a power struggle, he left Apple in 1985, he founded Pixar animation company, which launched a series everyone familiar Cheung the animated film - "Toy Story", and later it was Disney acquisition Jobs become Disney's largest shareholder. Because of a fortuitous event, he returned to Apple in 1997, and began his journey of the Apple empire.
Steve Jobs is a genius to change the world, With his keen sense of touch and extraordinary wisdom, the courage to change and innovation, leading the trend of the global information technology and electronic products, computer and electronic products have become the simplicity of civilians, so that once expensive and rare electronic products become part of modern life.

Since the launching of Apple’s App store and the popularization of the 3G network and smart-phones, mobile phone application software shops have become a highly-contested concern for mobile phone corporations and telecom operators. By analyzing the market background and competition for mobile phone software application shops, this paper will explore the opportunities available to mobile phone software application shops during this stage of development and the possible difficulties which they may encounter.

the smart phone of our brand has many functions.It can download the latest apps in the store and many amazing games,and it is on sale now.what are you waiting for?

D

电容式触摸屏,别忽略了“电容”这两个字,玻璃下面的电极、绝缘的玻璃层和触控的手指,三者不就构成了一个电容吗?交流信号可以通过这个电容耦合的

C

Now the social development soon,the smartphone market is very promising,now many teenagers cannot leave the mobile phone,mobile phone bring convenient at the same time also affect people's vision,let more and more teenagers become dependent.Personally,I think playing mobile phone should be suitable for and check,play a long time to overlook

Advantages and Disadvatages of Mobile phonesAs every body knows, mobiles are playing a important part in our daily life nowadays.But they have bot advantages and disadvtanges in my opinion.First, mobiles make it convinent for people to keep in touch with each other whevere they are.Especially when they have something important.It reduces the cost for people dont have to travel a long way to get to know the things in personSecond,we can send messages by mobiles with little money,just 0.01 yuan for each short message.third, we can also play games or take photoes or listen to music on the mobiles,late we do many things on them with the development of technology.But they also have many disadvatages.we have to pay for the wrong numbers which are not for us.The radioactivites may do harm to our health.Sometimes the rings may affect others in public or at meetings

C

With the promotion of the 3G technology application and the constant innovation of the smart phones,mobile advertising bounds to become one of the most important forms of advertising in the next few years.In the background of the increasingly emphasized "precise marketing" and "effective arrival",the advantages of mobile advertising,such as segmentation,orientation,instant,interactive etc.,will increasingly prominent.While mobile advertising media and traditional media and Internet joint create mobile news,mobile television and mobile broadcast,mobile wap site and other emerging forms of advertising,which will become the new luminescent spot in the development of China advertising industry.However mobile advertising in the course of development has been rejected by the masses of users,due to false information and spam messages,therefore they suspect the mobile advertising value and development prospects .
Based on the principle of advertising and communication,this paper starts from the basic information and the development of China mobile ads,analyzing the status quo of mobile advertising development process problems and solving counter measures,and predict the mobile advertising development situation in the next few years in China.

C

Advantages and Disadvatages of Mobile phonesAs every body knows, mobiles are playing a important part in our daily life nowadays.But they have bot advantages and disadvtanges in my opinion.First, mobiles make it convinent for people to keep in touch with each other whevere they are.Especially when they have something important.It reduces the cost for people dont have to travel a long way to get to know the things in personSecond,we can send messages by mobiles with little money,just 0.01 yuan for each short message.third, we can also play games or take photoes or listen to music on the mobiles,late we do many things on them with the development of technology.But they also have many disadvatages.we have to pay for the wrong numbers which are not for us.The radioactivites may do harm to our health.Sometimes the rings may affect others in public or at meetings

Today,you don’t literally have to carry your laptop or sit the entire day facing your desktop computer to perform all the tasks that you need to do.You need not have a wired telephone to do international calls either.With the constant technological innovations,almost everything is made possible with the use of a single,handy smart phone.But do you have even the slightest idea why these are called smart-phones?What makes smartphones smart?And what can one do with these types of phones?
Let’s begin with the definition of smartphones.Smartphones are high end cellphones that are most basically distinguished from traditional ones due to its more advanced features.The earliest smartphones combine the feature of a personal digital assistant (PDA) and camera.You can perform outgoing calls and receive incoming calls,send and receive messages and take pictures with this kind of smartphones.But as time passes by,developers continuously adapt to the needs of the users and integrate the latest technologies to these smartphones so other functions can be done as well.Along with the smart phones,tablets are also gaining popularity.Most of these tablets utilize the similar operating systems being used by the smart phones.The only difference of these tablets is that they have more features to offer and quite similar to having a miniature laptop.
The most common smartphone operating systems are Google’s Android,Apple’s iOS,Microsoft’s Windows Phone,Nokia’s Symbian,RIM’s BlackBerry OS,and Linux.The operating system with the highest market share to date is the Symbian with 51%.But this OS is forecasted to be taken over by another operating system in due time.Nowadays,sales figures in application stores show a change of OS preference.Apple App Store,Blackberry App World,Nokia Ovi Store,and Google Android Market ranks accordingly.Users now prefer more advanced operating systems,exploring the complicated yet amazing features that such OS have.Due to the increase of smart phone and tablet users,apps are now being sought after,thus you can have various types of applications built either of ecommerce,games and location based.
But if there are advantages,there are also a few disadvantages of these smartphones,one of which is being attacked by malicious software.This is also the same case with tablets.This malware is often distributed through application stores that don’t have proper review process or only have minimal screening procedures done with the content they offer.With this,it is highly advisable that you constantly update your OS for better performance and to avoid being destroyed by malicious software.
You need us we specialize in raising all kinds of applications for all types of operating systems which is one of our specialty.
希望能够帮到你【ABC.Snap】

C

The smartphone applications offer people a lot of conveniences.
这是自己翻译的.==!

爸爸的老手机太老了，200元的手机用了4个年头了，说不完的毛病，经常自动关机、不在服务区，联系起来真不方便，最近更是不好用了，可爸爸总是不舍的买，总是说：“没那么多余钱将就着用吧”。2014年春节来临，我的压岁钱共计770元，一点也不舍的花，别的小朋友用压岁钱买了喜欢的玩具、烟花、小食品等等，我就想用我的压岁钱给爸爸买一部智能手机，这就是我的愿望。一天我拉着爸爸去镇上卖手机的地方（移动服务大厅），那里手机各式各样，应有尽有、琳琅满目，最贵的有五千元的智能苹果手机，最便宜的有七十元的老人用的手机，但我想给爸爸买个差不多的智能手机，年轻漂亮的营业员阿姨向我们推荐了正在搞优惠活动的波导3G4寸智能手机，我们一看就被精致的外表吸引住了，原价一千元的智能手机，活动价仅卖399元，真是太划算了！我当时的心情真是又兴奋、又激动，我想爸爸用上时尚的智能手机，并配上精致的皮套，爸爸该多高兴！多帅气啊！特别是年仅11岁的儿子的一片孝心，意义更加重大……五年级:刘铠源

解题思路：由频率分布直方图，求出前3个小组的频率之和，得出第2个小组的频率，即可得出样本容量即被调查的人数．

根据题意与频率分布直方图，得
频率分布直方图中从左至右前3个小组的频率之和为：
1-（0.015+0.035）×2=0.9，
∴从左至右第2个小组的频率为[3/1+3+5]×0.9=0.3，
∴样本容量即被调查的人数应为[150/0.3]=500．
故选：D．

点评：
本题考点： 频率分布直方图．

考点点评： 本题考查了频率分布直方图的应用问题，解题时应结合频率分布直方图，根据频率与样本容量的关系，得出正确答案．

D

手机进入主菜单settings---language keyboard---select language---再点击“中文”

摄像头的镜头相当于凸透镜，U＞2f时，凸透镜成倒立缩小的实像；分析图甲和乙，汽车的像越来越大，即物距越来越小，所以汽车靠近摄像头．
故答案为：凸透；近；大于二倍焦距．

D

With the development of science and technology, the use of smart phones become more popular.
Even in the library there are a lot of people in the use of mobile phones, some people in the use of mobile Internet, play games, others will use a mobile phone to answer or make a phone call.
Therefore, will inevitably affect the people in the library, and lead to people who are absorbed in a book be disturbed and upset, I can't concentrate on reading.
In my opinion, we should take some measures to avoid these effects.
First of all, should be put in the library mobile phone to mute or vibration mode, and as far as possible need not mobile Internet.
If the answer or make a phone call, we should call the corridor or toilet and quiet place.
So that it can be a very good make reading in the library are not affected.

B

D

In the last couple of decades, there has been a tremendous step forward in the world of technology. So many of the new inventions have become more familiar to us and much easier to get at any time. And with these new devices that make lots of thing easier, the world around us suddenly changed. For example the mobile phone is used by almost everyone today, so when you meet a new person, their cell phone number is among the basic information you get about them. However cell phones have disadvantages as much as advantages.
Pros：You are always connected and anyone who knows your mobile phone can contact you. You can speak to them, text them, send pictures and use lots of other features. Now most of the mobile phone service providers have GPRS, EDGE or 3G enabled network. You can receive and send emails, always have the newest information, get the exact location of markets, hotels or any other places you need while travelling towards them, download music and movies.
Cons：Some times mobile phones can fail you just when you need them the most. You may be at a location where there is no network, your battery can be empty, the providers’ network might be overloaded and your call can suddenly stop, or your phone can simply malfunction.Using mobile phone for a long time without break is definitely bad for your health. There have been some studies about the possible radiation from cell phones. The radiation isn’t really that dangerous, unless you’re talking on your phone non stop. But even if you’re not using it that often it can still damage your hearing, especially if talking on the phone is combined with loud music on your headphones.

D

小题1:A
小题2:D
小题3:C

   
小题1:

小学生的题吧
设第二季度销售Y台智能手机 （X可能会和乘号分不清 你设成X就行）
2Y+Y+2×2Y＝2800
2Y+Y+4Y＝2800（这步可省略）
7Y＝2800
Y＝2800÷7
Y=400
答：这家商场第二季度销售智能手机400台