科技交流英语（2022秋）Unit 5 test
简介
由电子科技大学组织开设，授课教师为李京南、庞慧、刘兆林等5位老师。
课程介绍
英语广泛用于工程技术领域的国际交流。如何使用简洁的语言清楚地传递信息是工程师在国际舞台上常常面临的问题。本课程讲解交流中需要考虑的要素及语言选择的策略要点，培养用英语进行定义、描写、解释、报告、阐释的能力，帮助工程技术人员灵活运用已有英语语言知识和技能，快速进行准确得体的口头和书面交流。
开课时间：2022-07-25 至2023-01-09
选择题
主观题
Choose an experiment you have done, and write three paragraphs to explain the process of doing it respectively
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as an instruction for a How-to mannual;
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as a general description for a textbook;
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as a narration for a lab report.
我的答案：
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Connect the devices, check the air tightness of the devices. Fill the conical flask with manganese dioxide, then pour in the hydrogen peroxide solution. When air bubbles are found, collect oxygen.
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We can connect the devices, and check the air tightness of the devices. We fill the conical flask with manganese dioxide, then pour in the hydrogen peroxide solution. When air bubbles are found, we can collect oxygen.
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We connected the devices, and checked the air tightness of the devices. We filled the conical flask with manganese dioxide, then poured in the hydrogen peroxide solution. When air bubbles were found, we collected oxygen.
