单项选择题

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单项选择题
A. How to make computers more intelligent.B. How to increase scientific productivity.C. Whether humans arc getting smarter.D. Whether vidco games help improve IQ.
A. How to make computers more intelligent.
B. How to increase scientific productivity.
C. Whether humans arc getting smarter.
D. Whether vidco games help improve I
Q.
单项选择题
A. Saving natural resources. B. Cultivating rare plants. C. Hunting for animal experts. D. Protecting threatened species.
A. Saving natural resources. B. Cultivating rare plants.
C. Hunting for animal experts. D. Protecting threatened species.
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