单项选择题

Which is NOT the point of the example of the Pacific Islands

A．The poor community has shaken off poverty and people are well-fed now.
B．Obesity is becoming a problem in the developing world too.
C．Excessive weight increase will cause no less harm than the food shortage.
D．The problem of overweight emerges very fast.
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单项选择题
As physical exercise declines and diet expands, ______.
A．other western countries has been defeated by fat
B．obesity has become an epidemic (流行病) of the rich world
C．waistbands begin to be popular in other western countries
D．western countries can no longer fight against obesity
单项选择题
The DNA in the sperm cells can be measured ______.
A．in the same way how the cattle are herded
B．when they pass through a tube one behind the other
C．after they pass through a laser tube
D．when they are scanned by a laser detector all at a time
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