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【单选题】
当有汞（水银）撒落时，现场应（）。A.
用水擦
B.
用拖把拖
C.
扫干净后倒入垃圾桶
D.
将撒落的水银收集至密封容器中，加水或甘油液封，地面或桌面再用硫磺粉覆盖，收集后统一处理
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举一反三
【单选题】You'll have to use the stairs. I'm afraid the lift is out of ________. [ ]
A.
order
B.
work
C.
date
D.
touch
【单选题】President Enrique Pena Nieto has encouraged Mexicans to walk more, use stairs and exercise one hour every day as he launched a campaign against the unrestrained obesity and diabetes(糖尿病). ' We cant ke...
A.
epidemic
B.
academic
C.
dynamic
D.
ceramic
【单选题】Use the stairs instead of the elevator ______________ fire.
A.
in case
B.
in the case
C.
in case of
D.
in case that
【单选题】What is NOT the mans suggestion?
A.
Try to eat less.
B.
Walk more quickly.
C.
Use the stairs.
D.
Avoid fast foods.
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