关于眼电图（EOG）叙述有误的是（）。
A.记录的是视网膜外层动作电位
B.只有当眼球按一定的角度转动时才能记录到EOG
C.EOG主要反映的是视网膜色素上皮和光感受器的功能
D.可以测定眼球的位置
E.可以测定眼球运动的变化
参考答案：A
解析：眼球内外存在着电压差，在不加额外刺激时也有静息电位，EOG记录的是视网膜外层的静息电位而不是动作电位，但只有当眼球左右转动使静息电位发生极性偏转时，才能记录到EOG。EOG主要反映的是视网膜色素上皮和光感受器的功能，也用于测定眼球位置及眼球运动的变化。
| 完形填空。 | ||||
| There are many kinds of pollution around us, 1 air pollution, soil pollution, noise pollution and light pollution. They are bad 2 our health in many ways. Burning gas, oil and coal creates air pollution. It can cause sore eyes and 3 problems. With the increase of pollution and the development of industry, litter is everywhere. It makes our environment dirty. People put lots of rubbish in the land. Farmers use too many 4 in the fields. They destroy the soil. So soil pollution has become serious. Noise pollution can make people 5 . For example, people may lose their hearing if they work in a 6 place for a long time. Too much noise can cause high blood pressure 7 . Working for a long time in strong, changeable light 8 cause some kinds of illnesses. It makes people feel 9 and is especially bad for the eyes. With 10 pollution, our planet will become greener and our health will be better. Let's be greener people. | ||||
|