单项选择题

A．The woman is being interviewed by a reporter.
B．The woman is asking for a promotion.
C．The woman is receiving an oral test.
D．The woman is applying for a job.
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单项选择题
According to the passage, which of the following statements is TRUE
A．The woody stems contain more water than the leaves.
B．Only part of the carbon dioxide in the plants is synthesized.
C．The mineral elements will not be absorbed by the plant unless dissolved in their roots.
D．Air existing around the leaf is found to be saturated.
单项选择题
The essential function of photosynthesis in terms of plant needs is ______.
A．to derive energy from light
B．to preserve water
C．to combine carbon dioxide with water
D．to form sugars
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