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【单选题】
某自来水厂工人，在工作接触某种有毒气体，出现头晕、胸闷和呼吸困难，并伴吐粉红色泡沫痰。X线胸透：肺纹理增粗、紊乱，两肺散在大小不等的片状阴影，边缘模糊。考虑引起中毒的气体是A.
氯气
B.
氰化氢
C.
二氧化碳
D.
一氧化碳
E.
甲烷
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【单选题】We all know whether we are left-handed or right-handed; hardly any of us know whether we are left-faced. Yet according to Professor Karl Smith of the University of Wisconsin we are all almost【B1】_____...
A.
hardly
B.
certainly
C.
accordingly
D.
possibly
【单选题】As we all know, thick forests are the natural ______for birds, animals and insects, and we must forbid cutting trees without any limitation.
A.
habitat
B.
resort
C.
residence
D.
refuge
【简答题】The party cares for us y______, as we all know.
【单选题】Diamond, _________, is the hardest of all materials.
A.
like we know
B.
since we know
C.
we know
D.
as we know
【简答题】As we all know, fresh air is ______ to our health. (benefit)
【简答题】We all know that the plan is divided into three parts. (翻译)
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