单项选择题

Dale Jorgenson points out that the 2.78 grow rate will be continued in the next ______.

A. 2 years
B. 10 years
C. 20 years
D. 5 years
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填空题
sundial。
单项选择题
Which of the following description is INCORRECT
A. The new strain of mosquito has been released into the wild.
B. Scientists have done similar researches before.
C. The new strain of mosquito cannot spread the disease.
D. This kind of mosquito is genetically modified.
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