阅读理解Laboratoryworkisyourchancetolearnsciencefirst-hand.Itcanbefunbuty

阅读理解 Laboratory work is your chance to learn science first-hand. It can be fun but you must be careful to prevent injury. Listen closely when your teacher reads and explains the rules before your first lab lesson.
LABORATORY RULES
Throughout the lesson
Do not enter the science lab without the teacher’s permission.
No food or drinks are to be allowed in the science lab.
Before the Experiment
Read all instructions carefully before every experiment.
Prepare all apparatus (仪器) and arrange them 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 in proper waste baskets.
First Aid
Report all accidents to your teacher immediately.
If you spill (溅出) any chemicals onto your body of clothing, wash with plenty of water and report to your teacher.

1.Your teacher will probably tell you the rules above the first lab lesson.A.beforeB.sinceC.duringD.after2.Before every experiment, you should .A.taste the chemicals firstB.clean all the apparatusC.read all instructions carefullyD.report all the accidents to the teacher3.When you are not sure how to use all apparatus, .A.try them on your ownB.put them backC.ask your teacher for helpD.read the rules carefully4.It is clear that you can .A.bring food into the labB.enter the lab anytimeC.smell chemicals as you likeD.learn science directly in the lab5.If you get chemicals on the clothing, you can find ways to solve it in the part .A.Before the ExperimentB.First AidC.During the ExperimentD.After the Experiment

ACCDB解析1.细节理解题，根据文中语句“Listen closely when your teacher reads and explains the rules before your first lab lesson.”理解可知。
2.细节理解题，根据文中语句“Read all instructions carefully before every experiment.”理解可知。
3.细节理解题，根据文中语句“If you are unsure of how to use any apparatus or how to operate, ask your teacher for help.”理解可知。
4.细节理解题，根据文中语句“Laboratory work is your chance to learn science first-hand.”理解可知。
5.细节理解题，根据文中语句“If you spill (溅出) any chemicals onto your body of clothing, wash with plenty of water and report to your teacher.”理解可知。

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