More and more vehicles using cheap fuel, declared scientists at the conference, have left Bangkok’s children with body lead leve

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问题 More and more vehicles using cheap fuel, declared scientists at the conference, have left Bangkok’s children with body lead levels the world highest.

选项 A、in the world highest
B、in the world’s highest
C、among the world’s highest
D、among the highest of world

答案C

解析 结构应用本句意为:科学家们在会议上宣称,(泰国首都)曼谷有越来越多的车辆使用廉价的燃料,使得那里儿童体内的铅含量成为世界(几个)最高(中的一个)。因为the highest在本句中作宾语补足语,且曼谷不是唯一的儿童体内铅含量高的城市,因此应用among the world’s highest,C为答案。
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