选择题:16[单选题,1.3分] If the market is left ____________, t

题目内容:
16[单选题,1.3分] If the market is left ____________, there will sometimes be shortages or over-production.
A.to be run
B.to run itself
C.running by itself
D.running
参考答案:

有家牛奶公司最近推出了送奶上门的新服务项目。平均说来,每个服务人员每人要负责临近10个街区住户的送奶

有家牛奶公司最近推出了送奶上门的新服务项目。平均说来,每个服务人员每人要负责临近10个街区住户的送奶任务,交通工具目前仅有:三轮车。为减轻送奶员的不必要负担,公

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38[单选题,1.3分] These days people are becoming more a

38[单选题,1.3分] These days people are becoming more and more _____ about the food t

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