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【单选题】
白血病的牙龈病损时出现组织坏死、溃疡、口臭原因是A.
大量幼稚血细胞浸润积聚，末梢血管栓塞，局部组织对感染的抵抗力降低
B.
牙龈结缔组织本身的增生
C.
牙龈结缔组织部分的红细胞大量浸润积聚
D.
物理、化学刺激
E.
菌斑大量堆积
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【单选题】Most scientists in the world today firmly believe the effective means to stop global warming is to reduce emissions of air _____.
A.
pollutes
B.
polluting
C.
pollutants
D.
pollution
【简答题】防水卷材的搭接宽度应符合规范要求,铺贴双层卷材时,上下两层和相邻两幅的接缝应错开( )幅宽,且两层卷材不得互相垂直铺贴A. 1/4~1/3 B. 1/3~1/2 C. 1/4~1/2 D. 1/5~1/3
【简答题】The Kyoto Protocol set out specific commitments by individual developed countries to reduce emissions by _____ by the period 2008-2012.
【单选题】With use of _____ to reduce emissions, the marginal benefit of an additional unit of pollution is the same for all polluters.
A.
an environmental standard
B.
an emissions tax
C.
a tradable emissions permit
D.
an emissions tax or a tradable emissions permit
【单选题】Why did Xiaoli run away?
A.
Because she thought Dalong wanted her life.
B.
Because she thought Dalong wanted her knife.
C.
Because she thought Dalong wanted her book.
D.
Because she thought Dalong wanted her bag.
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