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【判断题】
音的长短是由音的延续时间来决定的。延续时间长,音则短;延续时间短,音则长。A.
正确
B.
错误
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【单选题】What is the most frightening aspect of the chemicals in the world?
A.
Over 143,000 chemicals have been produced.
B.
Chemicals are overused in many areas of our life.
C.
The chemicals' effects are not clearly known.
D.
Human beings become dependent on chemicals.
【多选题】下列关于对犯罪分子从轻、减轻或免除处罚的表述中正确的有( )。
A.
有揭发他人犯罪行为，查证属实的，可以从轻或者减轻处罚
B.
提供重要线索，从而得以侦破其他案件等立功表现的，可以从轻或者减轻处罚
C.
有重大立功表现的，可以减轻或者免除处罚
D.
有重大立功表现的，应当减轻或者免除处罚
【单选题】Many people are against the use of chemicals to preserve food because .
A.
chemicals are not necessary for preserving food
B.
a small quantity of bacteria in food is good to the body
C.
those chemicals that kill bacteria may not be good to people
D.
there are other better ways to preserve food
【单选题】By 'the toxic chemicals are being remobilised' (Line 3, Para. 6), the author means that the Pops
A.
are taking in the form. of ice or water
B.
are becoming more and more poisonous
C.
are able to move easily and quickly in the water
D.
are no longer trapped in the ice and cold water
【简答题】A．Chemicals, lumber and cattle. B．Chemicals, lumber and automobiles. C．Chemicals, automobiles and cattle. D．Lumber, automobiles and cattle.
【单选题】______,heat is produced.
A.
Certain chemicals are mixed together
B.
That certain 'chemicals are mixed together
C.
Whenever certain chemicals are mixed together
D.
The mixing together of certain chemicals
【多选题】下列行为应当减轻、免除处罚或者从轻、减轻处罚的是（）。
A.
15周岁的李某因追求刺激放火烧毁居民区房屋，造成大量财物被毁
B.
王某对犯罪分子抢劫其公文包的行为进行正当防卫，但防卫过当
C.
刘某因紧急避险造成不应有的损害
D.
75周岁的白某过失致梁某死亡
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