Question

【题目】

Lab work is fun but you must be careful. Listen carefully when your teacher reads and explains（解释）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 allowed in science lab.
Before the experiment	Read all instructions carefully before every experiment. Prepare all apparatuses (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 how to use the apparatuses or how to operate（操 作）, ask your teacher for help. Never smell or taste chemicals（化学药品）unless（除非）your teacher gives permissions.
After the experiment	Throw waste materials into proper waste baskets Wash all apparatuses after use and return them to the places where they were. Never smell or taste chemicals（化学药品）unless（除非）your teacher gives permissions.
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 lesson.

A.beforeB.sinceC.duringD.after

【2】It is necessary for you to __________ before every experiment.

A.read all instructions carefullyB.take enough food and drinks

C.smell chemicals immediatelyD.talk with your classmates

【3】If you are not: sure how to use the apparatuses, __________________.

A.read the rules carefullyB.try them again and again

C.ask your teacher for helpD.return all apparatuses to the places where they were

【4】The underlined word "spill" means ___________________.

A.take care ofB.run out ofC.fall offD.pour out in drips

【5】You should put the waste materials into the ____________.

A.packetB.paper bagC.binD.waste baskets

【6】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】D

【6】C

【解析】

本文是实验室的规章制度。

【1】细节题。根据第1段第2句“Listen carefully when your teacher reads and explains（解释）the rules before your first lab lesson.”可知在上第一节实验课之前你必须知道实验规则。故选A。

【2】细节题。根据实验室规则第2项（Before the experiment）第1句“Read all instructions carefully before every experiment.”可知“每次实验前，你必须仔细阅读所有的说明。”故选A。

【3】细节题。根据实验室规则第3项（During the experiment）第1句“If you are unsure how to use the apparatuses or how to operate（操作）, ask your teacher for help.”可知“如果你不知道如何使用这些仪器，请向你的老师求助”，故选C。

【4】词义猜测题。take care of照顾，照看；run out of用光，耗尽；fall off 脱落，掉落；pour out in drips一滴一滴地倒出来，洒。此句“If you spill any chemicals onto your body or clothing, wash with plenty of water and report to your teacher.”句意是：如果你把化学物质洒在身上或衣服上，用大量的水清洗并向老师报告。根据句意可知"spill"意思是“洒，溅出，泼出”，故选D。

【5】细节题。根据实验室规则第4项（After the experiment）第1句“Throw waste materials into proper waste baskets”可知你应该把废料放进垃圾桶里。故选D。

【6】细节题。根据实验室规则第3项（During the experiment）第2句“Never smell or taste chemicals（化学药品）unless（除非）your teacher gives permissions.”可知当你在科学实验室时，未经老师允许，你不能尝化学药品。故选C。