填空题

A Control of Respiration
B Beauty of Fresh Cut Flowers
C Role of Respiration
D Most Important Aspect of Flower Care
E Need for Clean Water
F Ways of Stopping Respiration
Paragraph 5______

【参考答案】

E
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单项选择题
Water was used to try to break up the smog.
A．Right
B．Wrong
C．Not mentioned
填空题
C
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