阿摩線上測驗
21. At the annual _____ , experts from all over the world will discuss
global warming.
(A)conviction
(B)contradiction
(C)convention
(D)connection
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統計： A(9), B(13), C(50), D(5), E(0) #3287720
統計： A(9), B(13), C(50), D(5), E(0) #3287720
