問題詳情

16. Playing on a _____ is very interesting. You and your partner sit on the two ends of a long board (木板). When one end goes up, the other goes down.
(A) swing
(B) idea
(C) block
(D) seesaw

參考答案

答案:D
難度:計算中-1
書單:沒有書單,新增

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