题目内容：

任务型阅读。

What do you think of different kinds of reference books(参考书)? We did a survey. Here’re some of their answers.

Liu Yang: In some ways, reference books(参考书) are useful. They help us understand textbooks better. For example, if we can’t learn a language point well in English class, a reference book can help us to review the point. So I think it’s better to have such books.

Wang Qian: Reference books have some disadvantages. Some of them show answers to the exercises in textbooks(课本). This isn’t very good. Students will just copy the answers instead of thinking for themselves. Day after day, students won’t listen carefully in class.

Zheng Xia: Sometimes, reference books are useful. Some reference books show something a little more difficult than the textbooks. They challenge us and let us reach a higher level in our studies. So if you want to learn more, reference books are needed.

Liu Wei: I don’t think reference books are very helpful. If we listen to our teachers carefully and solve the problems at school, this is helpful enough. Besides, the school has already gives us a lot of homework. More reference books will only make us sick of studying. And for some subjects like English, the best way is to speak, not just to do exercises.

For your reference books
1.	Liu Yang	In some ways, they are useful because they 2. better.
Zheng Xia	Reference books can help us learn more and let us 3. in our studies.
Disadvantages	Wang Qian	Students won’t think or 4. in class because they can copy the answers from the reference books.
Liu Wei	More reference books aren’t very helpful. They will only make us 5..