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【单选题】
氨制冷剂具有可燃性,遇到明火会燃烧,氨的自然温度一般是()℃。A.
630
B.
500
C.
1000
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【简答题】看解释写单词danza típica de Sevilla
【单选题】The author began to love books for the following reasons EXCEPT that
A.
he began to see something in his mind.
B.
he could visualize what he read in his mind.
C.
he could go back to read the books again.
D.
he realized that books offered him new experience.
【简答题】看解释写单词danza típica de Argentina
【简答题】He began to __________ becauseevery means _______ tried already. A. loseheart has been B. lose heart had been C. losehis heart was D. lose his heart had
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