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【判断题】
同量异位素:有相同的核子数而质子数不同的原子。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The symbolic connection of a word to a particular thing is almost always ______.
A.
logical
B.
arbitrary
C.
inheren
D.
automatic
【简答题】20世纪上半期世界经济发展的不成熟性表现在哪些方面?
【单选题】Like many other social problems in contemporary America, the wide gap between men and women in jobs and earnings is often regarded as an ___________ fact of life.
A.
inevitable
B.
inferior
C.
initiative
D.
inheren
【简答题】反映底面实形的试图为圆，其他试图均为等腰三角形，则该视图为[(填空(1))].A. 圆锥
【简答题】反映底面实形的视图为圆，另外两个视图均为矩形，则该形体为[(填空(1))]A. 圆柱
【单选题】He went to his uncle's house _____ goodbye _____ them. [ ]
A.
say; to
B.
to say; to
C.
say; for
D.
to say; for
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