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问答题
Questions 22 to 25 are based on the passage you have just heard.
22.
Questions 22 to 25 are based on the passage you have just heard.
22.
A、Anxious and depressed.
B、Contented and relieved.
C、Proud but a bit nervous.
D、Excited but somewhat sad.
答案：
It evolved in the mid-1970s.
