题目内容

since the day I 5 my mobile phone.

A. paid
B. acquired
C. obtained
D. got

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职务轮换和晋升都是一种横向的培训。()

2 save your life!

A. must
B. can
C. need
D. have to

Mobile phones are also 3 because they have many good features

A. annoyed
B. interested
C. interesting.
D. annoying

t分布的自由度越大，相同概率的t界值越大。()