2010年江苏无锡中考物理试题第28小题第3问、第4问答案好像有点问题啊？？？我觉得应该是3D,4C。

第3问，c选项，很明显，零刻度线虽然在光具座中央，但如果凸透镜不在零刻度线处呢？则无法直接读出物距像距。只有当凸透镜也在光具座中央时，才能直接读出物距像距。故c错误。
再看你所说的d选项，让物体和接光板不动，在他们直间来回移动凸透镜，分别记录成倒立，放大实像时；倒立，缩小实像时；倒立，等大实像时的物距，相距，再根据凸透镜成像规律，可计算出凸透镜的焦距。故d正确。
所以应选c

第4问，应该成放大的实像，所以在c，d中选择。而凸透镜成的像只上下颠倒，左右不颠倒。故c错误，d正确。
所以应选d

希望对你有帮助，纯手打，累。。。
快中考了，祝你取的好成绩。

This season on business is not good. The earth plane in cold, heat, security team and exhaust tenths long... How to spend easily comfortable plane time? The airport is comfortably stars second home, where a discrepancy in every house more than times. Say to travel equipment, they but than anyone come practised. Not only should prevent trip various emergencies and temperature changes,tory burch handbags, still have time clean,clarks shoes, neat and prepared to face the paparazzi lens of preparation. They learn to several recruit, ensure you can become airport in minority alight travelers.

How to deal with "on the plane could not rob blanket"? Summer dress cool and refreshing, but on the plane yet air-conditioned, blanket must be the most popular items. With his hope in "I a plane is on the vision on rob blanket", be inferior to carry the frivolous warm clothes and accessories. Of course, in the travel load fewer is better, the whole coat take up trouble, lighter and convenient to carry is the main point. Madonna systemic black appear at London heathrow airport,beats by dre headphones, her neck in the long black scarf is not bend so as to breakstubborn modelling to use, on the plane is amice, if your trip destination,eisterstuck classique, this kind of large cold evening slightly thin scarf is good thing. Kelly minogue aboard planes will wear sweaters, it's also travel buffets and mild texture,Timberland, guangqishuba how to sit very relies on all won't appear ugly folds.

Knitted fabric of connects body skirt, cutting loose and hardly wrinkling, is a short plane of good choice, off the plane slightly things can recover into work. Also is knitting fabric is the small black suit, summer in on the plane and the office all feel just fine. Business, you need a pair of nature can be shopping visible client working shoes,ugg boots England, might as well go to comfort famous ecco look, this flat shoes shoes palm soft enough to whole fist up.

To conceal the long trip started? Yesterday evening, in the early morning and drive report with the boss by an early plane? Still recommend that you do not make up. In dry cabin, skin oil flow.the degree than usual severe many,Wholesale Air Jordans, what you need is a good rest, and cover the aircraft was started - under boss see you wake up YanPao swollen swollen dishevelled, although the situation of will make his produce "my employees are working hard" of thinking, but also have probably leave "originally her such a sloppy" impression. And you are same, most star can choose when travelling let skin rest, try not to makeup, but they are more image concerns.
Topics related articles：

mont blanc rollerball pen have brothers tinea or f

UGG Shoe size should be proper

（1） 使像成在光屏中央
（2） 实 正立
C．零刻度线刻在光具座标尺的中央，可直接测出物距和像距
（4）？？

第三题我觉得是D选项 但我也只是学生 而且没看过图。 有可能错的 第四题你连选项都
没给！