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【单选题】
1989年,尼克·帕克导演了()。这部黏土定格动画片以电视采访的形式,展示了动物园里各种动物的生活状况,在1990年获得了奥斯卡最佳动画短片奖。
A.
《怪鸭历险记》
B.
《火车头托马斯和朋友们》
C.
《巴布工程师》
D.
《物质享受》
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【单选题】Peat is organic matter which develops in wetland areas. It is the ideal growing medium for plants, and there is a tremendous demand for it from gardeners, both amateur and professional. But only three...
A.
Only three percent of the land on our planet is covered in peatland.
B.
Taking too much peat will destroy the unique wetland areas in which it develops.
C.
Peat cannot develop except in wetland areas.
D.
No more peat should be extracted and a different growing medium for plants should be promoted.
E.
Peat is a very popular growing medium used by amateur gardeners and professional growers.
【简答题】Ina silica-based TLC experiment, if the migration distances of the solvent,compound A and B are 6.78, 2., and 3.57 cm, respectively, please calculatethe Retardation factor of R f and Retention facto...
【单选题】若波长为λ的光通过其1/4波片,出射光为线偏振光,说明入射光为():
A.
线偏振光
B.
圆偏振光
C.
椭圆偏振光
D.
不确定
【简答题】For this part, you are going to read a passage with 5 underlined sentences, and translate them from English into Chinese. 1) Science is not a set of unquestionable results but a way of understanding t...
【单选题】They discussed the problem three or four times and finally came to ______.
A.
end
B.
conclusion
C.
result
D.
judgment
【单选题】He was arrested but was release very soon because of a lack of that he was guilty.
A.
doubt
B.
conclusion
C.
evidence
D.
belief
【单选题】距下关节的跟骨是
A.
凸面
B.
凹面
【单选题】若一束波长为λ的光通过其1/4波片,出射光为线偏振光,则说明入射光为
A.
线偏光。
B.
圆偏光。
C.
椭圆偏光。
D.
不确定。
【简答题】由汞弧灯发出的光,通过一个绿色滤光片后,照射到相距为0.50mm的双缝上,在距双缝2.5m的屏幕上观测其干涉条纹。若测得相邻两明条纹中心的距离为2.72mm,求入射光的波长。
【单选题】What is the basic difference between human beings and animals in doing things in conclusion?
A.
Language.
B.
Memory.
C.
Purpose.
D.
Thinking.
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