题目内容

— The smell in the room is really terrible. 　
— You said it. Let's keep all the windows _____.
[     ]
A. closed　
B. open　
C. opening　
D. to open
B
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　　Laboratory work is your chance to learn science firsthand．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．

　　LABORATORYRULES

　　Throughout the lesson

　　·Do not enter the science lab without the teacher’s permission．·No food or drinks are to be alowed in the science lab．

　　Before the Experiment

　　·Read al instructions carefuly before every experiment．

　　·Prepare al apparatus(仪器)and arrange them so that you wil 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 smel or taste chemicals unless your teacher gives permission．

　　After the Experiment

　　·Wash al apparatus after use and return them to the places where they were．

　　·Throw waste materials in proper waste baskets．First Aid

　　·Report al accidents to your teacher immediately．

　　·If you spil(溅 出)any chemicals onto your body or clothing, wash with plenty of water and report to your teacher．

(1)

Your teacher wil probably tel you the rules above _________ the first lab lesson．

[　　]

A．

before

B．

since

C．

during

D．

after

(2)

Before every experiment, you should _________．

[　　]

A．

taste the chemicals first

B．

clean al the apparatus

C．

read al instructions carefuly

D．

report al the accidents to the teacher

(3)

When you are not sure how to use al apparatus, _________．

[　　]

A．

try them on your own

B．

read the rules carefuly

C．

ask your teacher for help

D．

put them back

(4)

It is clear that you can _________．

[　　]

A．

bring food into the lab

B．

enter the lab anytime

C．

smel chemicals as you like

D．

learn science directly in the lab

(5)

If you get chemicals on the clothing, you can find ways to solve it in the part _________．

[　　]

A．

Before the Experiment

B．

First Aid

C．

During the Experiment

D．

After the Experiment
 Laboratory　work　is　your　chance　to　learn　science　firsthand.　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.
LABORATORYRULES
Throughout　the　lesson
·Do　not　enter　the　science　lab　without　the　teacher’s　permission.·No　food　or　drinks　are　to　be　alowed　in　the　science　lab.
Before　the　Experiment
·Read　al　instructions　carefuly　before　every　experiment.
·Prepare　al　apparatus（仪器）and　arrange　them　so　that　you　wil　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　smel　or　taste　chemicals　unless　your　teacher　gives　permission.
After　the　Experiment
·Wash　al　apparatus　after　use　and　return　them　to　the　places　where　they　were.
·Throw　waste　materials　in　proper　waste　baskets.　　　　First　Aid　　　　
·Report　al　accidents　to　your　teacher　immediately.
·If　you　spil（ 溅 出 ）any　chemicals　onto　your　body　or　clothing,　wash　with　plenty　of　water　and　report　to　your　teacher.
【小题1】　Your　teacher　wil　probably　tel　you　the　rules　above　_____　the　first　lab　lesson.
A．beforeB．sinceC．duringD．after
【小题2】　Before　every　experiment,　you　should　_____.
A．taste　the　chemicals　first
B．clean　al　the　apparatus
C．read　al　instructions　carefuly
D．report　al　the　accidents　to　the　teacher
【小题3】　When　you　are　not　sure　how　to　use　al　apparatus,　_____.
A.　try　them　on　your　own
B.　read　the　rules　carefuly
C.　ask　your　teacher　for　help
d.　put　them　back
【小题4】　It　is　clear　that　you　can　_____.
A．bring　food　into　the　lab
B．enter　the　lab　anytime
C．smel　chemicals　as　you　like
D．learn　science　directly　in　the　lab
【小题5】　If　you　get　chemicals　on　the　clothing,　you　can　find　ways　to　solve　it　in　the　part　_____.
A．Before　the　Experiment
B．First　Aid
C．During　the　Experiment
D．After　the　Experiment

 Laboratory　work　is　your　chance　to　learn　science　firsthand.　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.
LABORATORYRULES
Throughout　the　lesson
·Do　not　enter　the　science　lab　without　the　teacher’s　permission.·No　food　or　drinks　are　to　be　alowed　in　the　science　lab.
Before　the　Experiment
·Read　al　instructions　carefuly　before　every　experiment.
·Prepare　al　apparatus（仪器）and　arrange　them　so　that　you　wil　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　smel　or　taste　chemicals　unless　your　teacher　gives　permission.
After　the　Experiment
·Wash　al　apparatus　after　use　and　return　them　to　the　places　where　they　were.
·Throw　waste　materials　in　proper　waste　baskets.　　　　First　Aid　　　　
·Report　al　accidents　to　your　teacher　immediately.
·If　you　spil（ 溅 出 ）any　chemicals　onto　your　body　or　clothing,　wash　with　plenty　of　water　and　report　to　your　teacher.
【小题1】　Your　teacher　wil　probably　tel　you　the　rules　above　_____　the　first　lab　lesson.

A．beforeB．sinceC．duringD．after
【小题2】　Before　every　experiment,　you　should　_____.
A．taste　the　chemicals　first
B．clean　al　the　apparatus
C．read　al　instructions　carefuly
D．report　al　the　accidents　to　the　teacher
【小题3】　When　you　are　not　sure　how　to　use　al　apparatus,　_____.
A.　try　them　on　your　own
B.　read　the　rules　carefuly
C.　ask　your　teacher　for　help
d.　put　them　back
【小题4】　It　is　clear　that　you　can　_____.
A．bring　food　into　the　lab
B．enter　the　lab　anytime
C．smel　chemicals　as　you　like
D．learn　science　directly　in　the　lab
【小题5】　If　you　get　chemicals　on　the　clothing,　you　can　find　ways　to　solve　it　in　the　part　_____.
A．Before　the　Experiment
B．First　Aid
C．During　the　Experiment
D．After　the　Experiment

 Laboratory　work　is　your　chance　to　learn　science　firsthand.　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.

    LABORATORYRULES

    Throughout　the　lesson

    ·Do　not　enter　the　science　lab　without　the　teacher’s　permission.·No　food　or　drinks　are　to　be　alowed　in　the　science　lab.

    Before　the　Experiment

    ·Read　al　instructions　carefuly　before　every　experiment.

    ·Prepare　al　apparatus（仪器）and　arrange　them　so　that　you　wil　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　smel　or　taste　chemicals　unless　your　teacher　gives　permission.

    After　the　Experiment

    ·Wash　al　apparatus　after　use　and　return　them　to　the　places　where　they　were.

    ·Throw　waste　materials　in　proper　waste　baskets.　　　　First　Aid　　　　

    ·Report　al　accidents　to　your　teacher　immediately.

    ·If　you　spil（ 溅 出 ）any　chemicals　onto　your　body　or　clothing,　wash　with　plenty　of　water　and　report　to　your　teacher.

   1.　Your　teacher　wil　probably　tel　you　the　rules　above　_____　the　first　lab　lesson.

    A.　before　　　　　B.　since　　　　C.　during　　　　D.　after

2.　Before　every　experiment,　you　should　_____.

    A.　taste　the　chemicals　first

    B.　clean　al　the　apparatus

    C.　read　al　instructions　carefuly

    D.　report　al　the　accidents　to　the　teacher

  3.　When　you　are　not　sure　how　to　use　al　apparatus,　_____.

    A.　try　them　on　your　own

    B.　read　the　rules　carefuly

    C.　ask　your　teacher　for　help

    d.　put　them　back

 4.　It　is　clear　that　you　can　_____.

    A.　 bring　food　into　the　lab

    B.　enter　the　lab　anytime

    C.　smel　chemicals　as　you　like

    D.　learn　science　directly　in　the　lab

    5.　If　you　get　chemicals　on　the　clothing,　you　can　find　ways　to　solve　it　in　the　part　_____.

    A.　Before　the　Experiment

    B.　First　Aid

    C.　During　the　Experiment

    D.　After　the　Experiment

 

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