单项选择题

In the last sentence of Paragraph 1, "warded off" could probably be replaced by ______.

A．got rid of
B．killed
C．avoided
D．cleared away
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单项选择题
Scurvy is a disease that is provoked by ______.
A．salted meat and biscuits
B．exhaustion
C．want of some essential substances
D．lack of fresh vegetables and fruits
单项选择题
Based on the passage we can safely conclude that if our diet is not comprehensive enough______.
A．vitamin pills are of no avail
B．nutritious food might be unhealthy
C．vegetable leaves can be a good remedy
D．religions fasting may help out a lot
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