問題詳情

【題組】39. In the latter experiment, black pepper does NOT stick to the finger because _______.
(A)soap makes black pepper disappear
(B)the surface tension of water lowers because of soap
(C)soap separates the molecules of black pepper
(D)soap and black pepper are always bound together

參考答案

答案：B
難度：計算中-1
書單：沒有書單，新增