单项选择题

According to the passage, humans will benefit from _________ whey they eat them.

A．potent chemicals
B．damaged cells
C．non-polluted fruits
D．antioxidants in plants
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单项选择题
In the third paragraph, the word flourish in line four probably means _________.
A．to grow and thrive
B．to make showy motions
C．to pour out
D．to strike noisily.
单项选择题
What does the discovery of deep-freeze bacteria mean to us, according to the passage
A．We might one day find form of life on other planets.
B．Scientists from NASA made a great progress in discovering the microorganisms
C．To retrieve any life that has died long ago is impossible.
D．Alaska is a place abundant in microorganisms.
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