What should the USDA do to achieve food security according to David Wallinga? A: Give top priority to things like nutrition and food security. B: Endeavor to ensure the sustainable development of agriculture. C: Fulfill its mission by closely cooperating with the industries. D: Study the long-term impact of climate change on food production.

According to David Wallinga, USDA should give top priority to things like nutrition and food security to achieve food security . 未知类型：{'label': 'questionDesc', 'content': '请根据所给材料判断题干是否正确', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2020年12月六级卷一\xa0仔细阅读2', 'isMemberControl': 0, 'type': 181}