单项选择题

Nowadays, a kind of ______ grain that is twice as expensive as regular grain is becoming popular in Chin

a.A. purifiedB. clarifiedC. whitenedD. refined
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单项选择题
In this experiment, they are wakened several times during the night, and asked to report what they
A. had just been dreaming
B. are just dreaming
C. have just been dreaming
D. had just dreamt
单项选择题
Bob assured his boss that he would ______all his energies in doing this new job.
A. call for
B. call off
C. call forth
D. call on
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