Question

【题目】根据表格内容，选择最佳答案。 Lab work is fun but you must be careful. Listen carefully when your teacher reads and explains the rules before your first lab lesson.

LAB RULES
Throughout the lessons	* Do not enter the science lab without the teacher's permission(允许). * No food or drinks are to be allowed in the science lab.
Before the Experiment	* Read all instructions carefully before every experiment(实验). * Prepare all apparatus(仪器)and put them in right places so that you will not knock them over while doing the experiment.
During the Experiment	* If you are unsure of how to use any apparatus or how to operate, ask your teacher for help. * Never smell or taste chemicals unless your teacher gives permission.
After the Experiment	* Wash all apparatus after use and return them to the places where they were. * Throw waste materials into proper waste baskets.
First Aid	* Report all accidents to your teacher immediately. * If you spill any chemicals onto your body or clothing, wash with plenty of water and report to your teacher.

（1）You must know the LAB RULES ______ the first lab lessons.
A.before
B.since
C.during
D.after
（2）It is necessary for you to ______ before every experiment.
A.read all instructions carefully
B.take enough food and drinks
C.smell chemicals immediately
D.talk with your classmates.
（3）If you are not sure of how to use any apparatus, ______.
A.read the rules carefully
B.try them again and again
C.ask your teacher for help
D.return all apparatus to the places where they were
（4）The underlined word “spill” means ______.
A.照射
B.伤害
C.摔下
D.溅出
（5）When you are in the science lab, you mustn't ______.
A.be careful in order to prevent injury
B.listen carefully when your teacher explains the rules
C.taste chemicals without the teacher's permission
D.throw waste materials into proper waste baskets

Answer 1

【答案】
（1）A
（2）A
（3）C
（4）D
（5）C
【解析】文章大意：这篇短文主要介绍了做实验是有趣的但是你必须小心。在上第一节实验课前一定要认真听老师读的及解释的规则。作者介绍了实验室的一些规则。
（1）细节理解题。根据Listen carefully when your teacher reads and explains the rules before your first lab lesson.可知上第一节实验课前要认真听老师读和解释的实验规则。故选A。
（2）细节理解题。根据Read all instructions carefully before every experiment(实验).故选A。
（3）细节理解题。根据If you are unsure of how to use any apparatus or how to operate, ask your teacher for help.故选C。
（4）词义猜测题。根据假设的情景If you spill any chemicals onto your body or clothing,及wash with plenty of water and report to your teacher.可知如果把药品溅到了身体或者衣服上，要用大量的水冲洗，并且报告老师。故选D。
（5）是非判断题。根据Never smell or taste chemicals unless your teacher gives permission.可知没有老师的允许不可以闻或者尝药品，故选C。