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【单选题】
Look! There are so many litters on the g round. Let’s ____who threw th em.A.
look
B.
look for
C.
find
D.
find out
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反馈参考答案：
举一反三
【简答题】从语体色彩划分词语,可分为( ) 、书面语、各种语体 。
【多选题】特殊残缺、污损人民币是指票面因（）等特殊原因，造成外观、质地、防伪特征受损，纸张炭化、变形，图案不清晰，不宜再继续流通使用的人民币。
A.
火灾
B.
虫蛀
C.
鼠咬
D.
霉烂
【单选题】It seems inevitable for people to make such a mistake.
A.
strange
B.
certain
C.
inconsistent
D.
proper
【单选题】One problem that has not yet been solved, it seems, is that ______.
A.
a prototype has not yet been accepted
B.
financial backing is not available
C.
the machine will need fire-resistant sensors
D.
the machine would not work if the ventilation was overwhelmed
【简答题】食品的总酸度
【单选题】有关汽油机的燃烧室描述正确的是( )
A.
汽油机的燃烧室是由活塞顶部及缸盖上相应的凹部空间组成。
B.
燃烧室结构尽可能紧凑，冷却面积要小 。
C.
燃烧室表面要光滑，不易积碳 。
D.
燃烧室的结构要避免进气涡流
【单选题】_____ he has been away from the city for two years. [ ]
A.
It seemed that
B.
It seems that
C.
He seems that
D.
They seem that
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