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【简答题】
宝石受到（）激发，发出可见光的性质叫（）.宝石吸收一部分能量后，原子中低能级的电子跃迁到高能级，在吸收光谱中（）带，但当电子从高能级（）时，（）出来，称之为发光.
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【单选题】The writer of this passage would probably be in favor of_______ 查看材料
A.
bus drivers who weren' t reckless
B.
driving alone
C.
a television set on the bus
D.
no billboards along the road
【单选题】The bus driver hoped that the writer ______.
A.
would do as she did
B.
would keep her in memory
C.
would give the money to others
D.
would do her a favor
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