Sweet potatoes are rich in ___ for they are an excellent source of beta-carotene, Vitamin C, and potassium.
Acompartments
Bcompliments
Cnuisances
Dnutrients正確答案
答案與詳解
nutrients 指『營養素』。後句舉例 beta-carotene(β-胡蘿蔔素)、Vitamin C、potassium(鉀)正是典型營養素,語意完美對應。
