题目

阅读理解 We are learning English, but how can we learn English well? A student can know a lot about English, but maybe he can not speak English. If you want to know how to swim, you must get into the river. And if you want to be a football player, you must play football. So , you see, you can learn English only by using it. You listen to your teacher carefully in class. You must read your lessons every day. You must speak English to your English teacher and classmates and also you must write in English. Then one day, you may find your English very good. (   ) 1. You know a lot abou生物体中细胞膜内的葡萄糖与细胞膜外的富氧液体及细胞膜构成微型的生物原电池，下列有关电极反应及产物的判断正确的是（　） A.负极反应可能是 B.负极反应的产物主要是被氧化生成的、、 C.正极反应可能是 D.正极反应的产物主要是葡萄糖生成的、和