【評論主題】【題組】50. Why are the untouchables prohibited from drinking water from a public fountain?(A)
Because

【評論內容】

They are not allowed to drink water from a public fountain for fear of polluting the water for others.他們不被允許從公共噴泉飲水，因為怕他們會汙染這些其他人也要用的水。

倒數第四行開始，依前段句子知道這邊they是在說untouchables。

【評論主題】【題組】50. Why are the untouchables prohibited from drinking water from a public fountain?(A)
Because

【評論內容】

They are not allowed to drink water from a public fountain for fear of polluting the water for others.他們不被允許從公共噴泉飲水，因為怕他們會汙染這些其他人也要用的水。

倒數第四行開始，依前段句子知道這邊they是在說untouchables。