题目内容

Noncoding sequences in a gene are known as:

A. Cistron
B. Nonsense codons
C. Introns
D. Exons

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His ___________of that singer is perfect.

A. imitate
B. imitates
C. imitation
D. imitating

He was _________doing the same thing every day.

A. tired of
B. tired in
C. tired from
D. tired to

They put __________ on quality rather than on quantity.

A. emphasis
B. emphasize
C. emphatic
D. emphasizes

Commerce is a bridge that links production with _________.

A. consume
B. consumption
C. consumer
D. consumptive

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