1. Natural foods are rich inessential ____①____and ___②___.2. The use of chemicals and fertilizers is to increase the __③_not the _④___of foods.
1. Natural foods are rich inessential ____①____and ___②___.2. The use of chemicals and fertilizers is to increase the __③_not the _④___of foods.
关键的 未知类型：{'label': 'questionDesc', 'content': '为下面词语选择合适的表达方式。', 'isMemberControl': 0, 'type': 181} A: key B: critical C: inessential
关键的 未知类型：{'label': 'questionDesc', 'content': '为下面词语选择合适的表达方式。', 'isMemberControl': 0, 'type': 181} A: key B: critical C: inessential
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