《2025年绩优课堂高效提升满分备考九年级英语上册冀教版》

Ⅴ. 词语运用。
阅读下面短文,在空白处填入一个适当的单词(有提示词的,填入所给单词的正确形式)。
Laboratory(实验室) work it your chance to learn science first hand. It can be fun but you must be 21. careful (care) to prevent in-jury. Listen closely when your teacher reads and explains the 22. rules (rule) before your first lab lesson.
LABORATORY RULES
Throughout the Lesson
●Do not enter the science lab without the teacher’s permission(允许).
●No food or drinks are 23. allowed (al-low) in the science lab.
Before the Experiment
●Read all the 24. instructions (instruc-tion) carefully before every experiment.
●Prepare all apparatus(仪器) and arrange them so that you will not knock 25. them (they) over while doing the experiment.
During 26. the Experiment
●If you are not sure of how to use any ap-paratus or how to operate, ask your teacher for help.
●Never smell or taste chemicals 27. unless your teacher gives permission.
After the Experiment
●Wash all apparatus after 28. using (use) and return them to the places where they were.
●Throw waste materials in proper waste baskets.
First Aid
●Report all the 29. accidents (accident) to your teacher immediately.
●If you spill (溅出) any chemicals 30. on/onto your body or clothing, wash with plenty of water and report to your teacher.

答案： 21.careful 22.rules 23.allowed 24.instructions 25.them 26.the 27.unless 28.using 29.accidents 30.on/onto