Because of their effectiveness, easy to produce, and lack of side effects, herbal medicines have become more commonly accepted in recent years.
Atheir
Beasy to produce正確答案
Cherbal medicines
Dmore commonly
答案與詳解
為什麼答案是 B
「easy to produce」為形容詞片語，與前後的「their effectiveness」（名詞片語）及「lack of side effects」（名詞片語）詞性不一致，破壞平行結構，應改為名詞片語如「ease of production」。
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