单项选择题

A．Because it’’s shining.
B．Because it’’s rare.
C．Because it’’s expensive.
D．Because it came from ancient times.
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单项选择题
It can be inferred from the passage that the author assesses the truth about opaque-2-maize in that ______.
A．it is a more recent innovation that the use of fish-protein concentrates
B．it can be stored as easily as other varieties of maize
C．it is more popular than the fish-protein concentrates
D．it may be more susceptible to insects than other varieties of maize
单项选择题
A．She had history class.B．She had English class.C．She had a holiday.D．All the above.
A．She had history class.
B．She had English class.
C．She had a holiday.
D．All the above.
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