皮皮学,免费搜题
登录
搜题
【简答题】
(2013·高考福建卷,B)Your glasses may someday replace your smartphone,and some New Yorkers are ready for the switch.Some in the city can’t wait to try them on and use the maps and GPS that the futuristic eyewear is likely to include. “ I’d use it if I were hanging out with friends at 3 a.m.and going to the bar and wanted to see what was open,”said Walter Choo,40,of Fort Greene. The smartphone­like glasses will likely come out this year and cost between $250 and $600,the Times said,possibly including a variation of augmented(增强的) reality,a technology already available on smartphones and tablets (平板电脑) that overlays information onto the screen about one’s surroundings.So,for example,if you were walking down a street,indicators would pop _ up showing you the nearest coffee shop or directions could be plotted out and come into view right on the sidewalk in front of you. “As far as a mainstream consumer product,this just isn’t something anybody needs,”said Sam Biddle,who writes for Gizmodo.com.“ We’re accustomed to having one thing in our pocket to do all these things,”he added,“and the average consumer isn’t gonna be able to afford another device (装置) that’s hundreds and hundreds of dollars.” 9to5Google publisher Seth Weintraub,who has been reporting on the smartphone­like glasses since late last year,said he is confident that this type of wearable device will eventually be as common as smartphones. “It’s just like smartphones 10 years ago,”Weintraub said.“A few people started getting emails on their phones,and people thought that was crazy.Same kind of thing.We see people bending their heads to look at their smartphones,and it’s unnatural,”he said.“ There’s gonna be improvements to that,and this a step there.” 小题1:One of the possible functions of the smartphone­like glasses is to ________. A.program the opening hours of a bar B.supply you with a picture of the future C.provide information about your surroundings D.update the maps and GPS in your smartphones 小题2:The underlined phrase“pop up”in the third paragraph probably means“ ________”. A.develop rapidly B.get round quickly C.appear immediately D.go over automatically 小题3:According to Sam Biddle,the smartphone­like glasses are ________. A.necessary for teenagers B.attractive to New Yorkers C.available to people worldwide D.expensive for average consumers 小题4:We can learn from the last two paragraphs that the smartphone­like glasses ________. A.may have a potential market B.are as common as smartphones C.are popular among young adults D.will be improved by a new technology
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】()不是滚动导轨的缺点
A.
动、静摩擦因数很接近
B.
结构复杂
C.
防护要求高
D.
抗振性差
【单选题】已知点P(m,3)是抛物线y=x 2 +4x+n上距点A(-2,0)最近一点,则m+n=(  )
A.
1
B.
3
C.
5
D.
7
【简答题】(2011?浙江)已知抛物线C 1 :x 2 =y,圆C 2 :x 2 +(y﹣4) 2 =1的圆心为点M (1)求点M到抛物线C 1 的准线的距离; (2)已知点P是抛物线C 1 上一点(异于原点),过点P作圆C 2 的两条切线,交抛物线C 1 于A,B两点,若过M,P两点的直线l垂直于AB,求直线l的方程.
【判断题】在自由表中可以设置记录有效性规制。
A.
正确
B.
错误
【单选题】已知点P(2-4m,m-4)在第三象限,且满足横、纵坐标均为整数的点P有(  )
A.
1个
B.
2个
C.
3个
D.
4个
【简答题】解答下列各题 (1)已知点P(a-1,3a+6)在y轴上,求点P的坐标; (2)已知两点A(-3,m),B(n,4),若AB ∥ x轴,求m的值,并确定n的范围.
【简答题】根据对话情景,从题后所给的句子中选择适当选项将对话补全(其中有两项为多余选项)。 A. Happy birthday to you! B. I have no idea. C. What time will the party begin? D. I'll stay at home. E. It doesn't matter. F. I'll be there on time. G. What a...
【简答题】已知抛物线C 1 :x 2 =y,圆C 2 :x 2 +(y-4) 2 =1的圆心为点M。 (Ⅰ)求点M到抛物线C 1 的准线的距离; (Ⅱ)已知点P是抛物线C 1 上一点(异于原点),过点P作圆C 2 的两条切线,交抛物线C 1 于A,B两点,若过M,P两点的直线l垂足于AB,求直线l的方程。
【单选题】( )不是滚动导轨的缺点。
A.
动、静摩擦因数很接近
B.
结构复杂
C.
防护要求高
【简答题】已知直线l 1 :2x-y+2=0与l 2 :x+2y-4=0,点P(1,m). (Ⅰ)若点P到直线l 1 ,l 2 的距离相等,求实数m的值; (Ⅱ)当m=1时,已知直线l经过点P且分别与l 1 ,l 2 相交于A,B两点,若P恰好平分线段AB,求A,B两点的坐标及直线l的方程.
相关题目: