单项选择题

A. Their comprehensiveness. B. Their complexity.
C. Their abstruseness. D. Their openness.
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填空题
Among all the ethical issues of food, what was considered to be of higher importance than issues such as workers’ rights A. The proving of claims on product labels.B. Local sourcing. C. Corporate responsibility. D. Workers’ personal values.
单项选择题
A. Emergency workers prefer to use sea water as a coolant.B. Emergency workers have now begun to use fresh water as a coolant.C. Fresh water could further corrode machinery.D. Fresh water could prevent radiation spreading.
A. Emergency workers prefer to use sea water as a coolant.
B. Emergency workers have now begun to use fresh water as a coolant.
C. Fresh water could further corrode machinery.
D. Fresh water could prevent radiation spreading.
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