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【单选题】
按联系变量分组,第一组55~65,;第二组65~75;第三组75~85;第四组85以上。则数据()。A.
65在第一组
B.
75在第二组
C.
75在第三组
D.
85在第三组
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反馈参考答案：
举一反三
【简答题】判断正误,并作出修改。 According to me, she should have resigned earlier. She smiled friendly. He laughed silly. His father died three years before. Every children need love. All the light was out. We are alread...
【单选题】某设备内的温度为 1000 °C , 要求测量误差小于或等于 5 °C , 应选下列哪一支温度计 ? ( )
A.
0 ～ 2500 ℃ 0.2 级
B.
0 ～ 1000 ℃ 0.2 级
C.
0 ～ 1600 ℃ 0.5 级
【单选题】Mary is said _____ in the supermarket for 5 years, but I don't know why she resigned last month. [ ]
A.
to have been working
B.
work
C.
to be working
D.
to have worked
【单选题】—I haven't seen film star Sally for a long time. —She ________ the stage because she gave birth to a baby last year. [ ]
A.
resigned
B.
retired
C.
quitted
D.
abandoned
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