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【单选题】
下列各组氟化物，全不是用杂化轨道成键的是( )A.
HF，CaF 2 ，LiF
B.
OF 2 ，BF 3 ，PF 5
C.
LiF，SF 6 ，SiF 4
D.
NF 3 ，BeF 2 ，AlF 3
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举一反三
【单选题】According to the passage, it is known that at a traditional wedding the bride will be kissed by her mother.
A.
正确
B.
错误
【单选题】Which of the following statements is NOT TRUE about the custom of giving away the bride? ( )
A.
It shows the bride’s father’s love towards the bride.
B.
It shows the father’s hope that the groom will love his daughter and protect her like him.
C.
It reflected a transfer from patriarchy to manus in the past.
D.
It reflects the bride’s love towards the groom.
【单选题】When do you call the father of the bride?
A.
father
B.
father-in-law
C.
grandfather
D.
bride father
【单选题】In India, the father of the bride used to give the
A.
bride a gift.
B.
groom's family a gift.
C.
groom some money.
D.
null
【判断题】When the groom lifts the veil and kisses his bride, the wedding is over.()
A.
正确
B.
错误
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