题目

完形填空。In learning English，one should first pay attention to listening and speaking.It is the groundwork of reading and writing.You'd better __1__ your best to speak while you do much listening.Don't be __2__ of making mistakes.But be careful not to let them stop you from improving your __3_．While you are doing this，a good _4__ is to write—keep a diary，write notes or letters.Then if you can，ask some others to go through _5__ you have written and tell you where it is wrong.Many mistakes in your speaking will be _6_ found when you write.Through correcting (纠正) mistakes，光合作用产生的大分子物质遇到碘液会变成（ ）A．红色B．蓝色C．黄色D．紫色