单项选择题

Judging from the context, the word "they" (line 2, Para.4) refer to ______.

A．the security risks
B．the terrorist attacks
C．environmental hazards of over-centralization
D．the security risks, economic expenses, and environmental hazards

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热门试题

单项选择题

Judging from context, the phrase global cuisine (Line 5, Para.4) probably mean ______.

A．a world of Young people
B．a specific food popular in the world
C．a world style of cooking
D．world foods in general

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