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题目内容
（广东开放大学学位外语（本，23春））
【单选题】The expression“the ups and downs " in Para.4 means ________.回答
A.present and past situations
B.good and bad experiences
C.chances and challenges
D.happy and sad feelings
A.present and past situations
B.good and bad experiences
C.chances and challenges
D.happy and sad feelings
参考答案
