单项选择题

From the first two paragraphs we can learn that the trend of food obsession is______.

A．adventurous
B．more and more popular in the world
C．a global phenomenon
D．sweeping up every corner of the earth
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单项选择题
It is implied that the ozone hole over Antarctica is______.
A．a threat to the European people
B．a risk to human health
C．a hazard to southern Chile and Argentina
D．the source of UV radiation
单项选择题
We can infer from the passage that______.
A．concentrations of greenhouse will become worse
B．Concentrations of greenhouse will become better
C．generally there is no rain in Antarctica
D．the North Pole is no longer covered with ice
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