One of the aims of the organization is to develop and encourage recycling practices that are______economically viable and enviro

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问题 One of the aims of the organization is to develop and encourage recycling practices that are______economically viable and environmentally sound.

选项 A、both
B、if so
C、as
D、not only

答案A

解析 语法:连词固定搭配1.空格后出现连词and,很自然联想到both A andB,因此(A)both为正确选项。2.注意以下固定搭配:both A and B,neither A norB,not only A but also B。
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