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【多选题】
相关关系可分为以下种类正确的有A.
按相关的方法可分为正相关和负相关
B.
按相关的形式不可分为线性相关和非线性相关
C.
按相关密切程度的不同,可分为完全、不完全相关和完全不相关
拍照语音搜题，微信中搜索"皮皮学"使用
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A.
paragraph 1
B.
paragraph 2
C.
both of them
D.
none of them
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A.
finished
B.
have finished
C.
would finish
D.
had finished
【简答题】阅读短文,完成练习 Last Monday, we went to a park by bike. We had a great day. We flew kites. Then Lily sang some songs. At twelve o'clock, we had lunch together. We had sandwiches and some milk. In the aftern...
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