题型：语法填空（语篇） 题类：常考题 难易度：困难
四川省自贡市田家炳中学2020-2021学年高一上学期英语12月月考（期末模拟）试卷
Have you ever done a science lab before? Maybe you have but you didn't know there is a special name for you were doing. A laboratory is a place where scientists do (they) jobs, and where they perform experiments. A lab is just another way of (say) you are doing an experiment. As you have already been a member of senior school students, you sometimes get to do experiments. (general) speaking, any time you are in science class where you get to mix chemicals, or connect (连接) wires to batteries, or watch a butterfly chrysalis (蛹) (see) if it is going to come out, you are doing an experiment.
Watching a butterfly or counting the number of seeds in a flower are very safe labs to do, but not all labs will be that safe. Sometimes, they are much (dangerous) than you expect. It means that you get to do experiments with more things are not safe, like chemicals or electricity. When you are going to do dangerous things, you need to practise lab safety. is really necessary to learn how to stay safe when you are doing science lab experiments.
Your (person) laboratory safety depends mostly you.
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