She says that the goods and services provided by nature ― like clean air, rain or ( ) soils ― should not be taken for granted. ( 章节：4 难度：1)_做题室

单项选择题She says that the goods and services provided by nature ― like clean air, rain or ( ) soils ― should not be taken for granted. ( 章节：4 难度：1): A、fertile; B、salty; C、wet; D、top

正确答案：A
答案解析：
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