How many orchid seeds are typically pollinated at one time？
A. No specific figure is given in the passgae.
B. 2,000.
C. 20,000.
D. 200,000.
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Why does the author mention the Virgo galaxy and the Andromeda galaxy in the third paragraph？
A. To describe the effect that distance has no visibility.
B. To compare the ages of two relatively young galaxies.
C. To emphasize the vast distances of the galaxies from Earth.
D. To explain why certain galaxies cannot be seen by a telescope.
Which of the following statements about orchids scents does the passage support？
A. They are effective only when an insect is near the blossom.
B. Harmful insects are repelled by them.
C. They are difficult to tell apart.
D. They may change at different times.
【38】
A. on
B. as
C. for
D. in
【35】
A. submission
B. fighting
C. stopping
D. winning
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