基态铬原子的电子排布式是[ ] A．1s22s22p63s23p64s14p5_爱下问搜题

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问题选择题

基态铬原子的电子排布式是[ ]

A．1s²2s²2p⁶3s²3p⁶4s¹4p⁵

B．1s²2s²2p⁶3s²3p⁶3d⁶

C．1s²2s²2p⁶3s²3p⁶4s²3d⁴

D．1s²2s²2p⁶3s²3p⁶3d⁵4s¹

答案

答案：D

完形填空

补全对话(共5小题，每小题2分，共10分)从方框中选择最佳选项补全对话,有两项多余。

A. Was it exciting
B. How was your vacation
C. How was the movie
D. Frank helped me study it
E. Where did you go on vacation
F. What did you do last night
G. Did you go to the movies last night

A:　小题1:　?    B: It was great. I enjoyed it.
A:　小题2:　?    B: My family went to the Great Wall. We visited my uncle in Beijing.
A:　小题3:　?    B: No, I stayed at home and studied for the math exam.　小题4:　.Did you go?
A: Yes, I did. I saw Lost in Thailand last night.     B:　小题5:　?
A: It was really exciting.

单项选择题

从2008年9月19日起，基金卖出股票时__________印花税，买人股票时__________印花税。（）

A.征收；征收

B.征收；不征收

C.不征收；征收

D.不征收；不征收