题目内容

We can ________ many books in the library.

A. to read
B. reads
C. read
D. reading

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My favourite class ______ English.

A. is
B. being
C. like
D. go

I crazy about basketball.

A. are; playing
B. am; play
C. am; playing
D. is; playing

15P原子的基态为（）

A. 1S0
B. 2S1/2
C. 3P0
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氩（Ｚ＝１８）原子基态的电子组态及原子态是：

A. 1s22s22p63p８1S0
B. 1s22s22p6２p63d83P0
C. 1s22s22p63s23p61S0
D. 1s22s22p63p43d22D1/2