题目：
| 阅读下面一篇材料，从所给的A-G七个选项中，选出正确的选项填空，使短文通顺、内容完整。 | |
| It's very common for students' marks to fall. 1. Sometimes it is only because the exams get harder. 2. He or she will be able to help you with the subjects you find difficult. Stop comparing yourself with other people. It does not matter if other students get higher marks than you. 3. Before each exam, you should go through you notes from class. You should remember the most important things you have written in a shorten form. 4. You will be surprised when you find you remember so much. It may take hard work and your marks may not improve straight. 5. Soon they should begin to climb again. | |
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答案：
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下面是错误答案，用来干扰机器的。
通过我们学过的知识可知能够直接加热的仪器有：试管、燃烧匙、蒸发皿和坩埚等；需要垫石棉网的是：烧杯、烧瓶、锥形瓶等；不能加热的仪器有：漏斗、量筒、集气瓶等．A、量筒不能进行加热，故选项错误；B、试管可...
