单项选择题

One difficulty in discovering kwashiorkor is that______.

A．it has no viruses
B．it is like other diseases
C．it is hard to see signs of it
D．it does not last long
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单项选择题
A good way to cure the disease is by______.
A．eating more meat
B．eating more starch
C．taking the proper medicine
D．drinking pure water
单项选择题
One of the disadvantages of young adults returning to stay with their parents is that______.
A．there will inevitably be inconveniences in everyday life
B．most parents find it difficult to keep a bigger family going
C．young adults tend to be overprotected by their parents
D．public opinion is against young adults staying with their parents
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