单项选择题

A．at least
B．at most
C．at last
D．at the cost
<上一题 目录 下一题>
热门 试题

单项选择题
We can infer from the passage that______.
A．computer networking will be helpful in the food industry
B．24-hour supermarkets are not very common
C．few shopping centers are three-shift open at any hour
D．24-hour restaurants are not in practice in the great business capitals
单项选择题
Judging from the context, the word they (Line 2, Para. 4) refers to______.
A．the security risks
B．the terrorist attacks
C．environmental hazards of over-centralization
D．the security risks, economic expenses, and environmental hazards
相关试题