阿摩線上測驗
18 To how something works in the lab or in real life, many instructors use videos, pictures, or ppt slides to give students a better idea.
(A) assist
(B) illustrate
(C) prevent
(D) respond
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統計： A(1), B(38), C(0), D(0), E(0) #2456375
統計： A(1), B(38), C(0), D(0), E(0) #2456375
