单项选择题

A．To discuss the results of the lab experiment.
B．To answer Bob’ s question about the lab experiment.
C．To explain the method of collection by water displacement.
D．To prepare the students to do the lab experiment.
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单项选择题
What did the future look like for Britain's food production at the time this article was written
A．The fall in world food prices would benefit British food producers.
B．An expansion of food production was at hand.
C．British food producers would receive more government financial support.
D．It looks depressing despite government guarantees.
单项选择题
The main reason for the rise in food prices is that______.
A．people are buying less food
B．the government is providing less support for agriculture
C．domestic food production has decreased
D．imported food is driving prices higher
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