题目要求：
1.各种参考书给学生的学习提供了一定的'帮助
2.过分依赖参考书的弊端
3.我的观点
参考范文：
Nowadays, various kinds of reference books for college students have come into existence. And many students gain so much that they soon find themselves totally relying on these books.
It should be admitted that reference books have brought great convenience to students. And conversely, over瞨eliance on these books has also caused negative effects. Firstly, students who have got reference books are more likely to believe all the contents in the books and neglect teachers instructions.
Secondly, with reference books, many students tend to be absent from class and become lazy to think about how to solve problems on their own. Last but not least, there are so many different kinds of reference books that a great number of low quality ones are also among them, which will lead to students confusion.
As a college student, I agree that reference books are of great use in our pursuit of knowledge. However, it is not sensible to rely on them too much. After all, reference books will never replace what we are able to obtain from teachers and classes.
亮点词汇：
①come into existence 出现
②rely on 依赖，依靠
③conversely ad. 相反地
④over-reliance n. 过度依赖
⑤be absent from class 逃课
⑥confusionn. 混淆，困惑
⑦replace v. 替代
学识谷
