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【单选题】
某二价阳离子具有 23 个电子,其质量数为 55 ,该离子核内中子数为( )A.
32
B.
30
C.
28
D.
24
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【简答题】Much of the city was ________ before the storm but thousands remained, many of whom were trapped by the water for days.(gigantic; standpoint; evacuate; naïve; permeate; nutrition; inflict; stray; dilu...
【单选题】Much of the city was evacuated ________ before the storm but thousands remained, many of whom were trapped by the water for days.
A.
evacuated
B.
destructive
C.
bound
D.
liable
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