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2017全国卷3听力原文

上传者:读书之乐 |  格式:ppt  |  页数:8 |  大小:83KB

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in your lab notebook. I’ll collect the notebooks every two weeks. You’ll be graded on lab notebooks and quizzes. But the most important information I want to give you now is about safety. First of all, you must wear shoes that cover your feet in the lab. Tennis shoes are OK. Also, don’t wear loose clothes, long scarves, big necklaces, or loose belts — they get caught in something or fall into liquid. Another thing to do for safety is cleaning up. Be sure to put the waste in the correct containers. We can’t mix liquid with paper. This is extremely important. I don’t want any fires in this room. You are responsible for washing out your own lab equipment and putting it away. If you don’t do this, I will take away points from your grade. Nobody’s going to clean up after you. OK, any questions?

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