单项选择题

A. With different colors.
B. With a thermometer.
C. With charts and graphs.
D. With moving lights.
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填空题
The research findings on the lab mice suggest that some people, if not all, have trouble controlling weight because of defects in the ob gene.
单项选择题
A. Go to see a film.B. Study harder in order to catch up with other classmates.C. Do some exercise to get some fresh air.D. Try her best to finish the schoolwork at home.
A. Go to see a film.
B. Study harder in order to catch up with other classmates.
C. Do some exercise to get some fresh air.
D. Try her best to finish the schoolwork at home.
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