单项选择题

Scientists in the world are expected to find a(n) _____ to the problem of over population.

A．reply
B．solution
C．response
D．answer
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单项选择题
Which of the following statements is true according to Paragraph 2
A．Tolerance is vital to friendship.
B．Friends are usually interdependent.
C．Friends do not rely financially on each other.
D．Annoying habits are worse than promise breaking.
单项选择题
What is the most important point the writer wants to make about sugar
A．People use it to sweeten food.
B．It gives us much-needed energy.
C．People take too much of it.
D．It is actually a kind of honey.
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