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【简答题】
以下关于烟气的说法，不正确的是（ ）。
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举一反三
【单选题】What does the author really of the idea of having children？
A.
It does more harm than good．
B.
It contributes to overpopulation．
C.
It is troublesome but rewarding．
D.
It is a psychological catastrophe
【简答题】By duality is meant the property of having two levels of structures,such that units of the ______level are composed of elements of the______level and each of the two levels has its own principles of o...
【单选题】评估报告中的评估原则应遵循( C )的原则。
A.
客观性、自立性、公正性、科学性、一般性
B.
透明性、独立性、公正性、科学性、专业性
C.
客观性、独立性、公正性、科学性、专业性
D.
客观性、自立性、公正性、科学性、专业性
【单选题】____ abroad for two years, the two astronauts went back home last year.
A.
Educating
B.
Educated
C.
Having been educated
D.
being educated
【单选题】I regret ___ harder in the past two years.
A.
not having studied
B.
having studied
C.
having not studied
D.
not being studied
【单选题】评估报告中的评估原则应遵循()原则
A.
客观性、自立性、公正性、科学性、一般性
B.
透明性、独立性、公正性、科学性、专业性
C.
客观性、独立性、公正性、科学性、专业性
D.
客观性、自立性、公正性、科学性、专业性
【单选题】__________ abroad for two years ,he will come back within two weeks
A.
Having studied
B.
Studied
C.
To study
D.
Studying
【单选题】_________ for two weeks, the village now is short of food.
A.
To flood
B.
Having flooded
C.
Having been flooded
D.
Being flooded
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