[ Vocabulary ]
An event, condition, or factor that can be changed or controlled in order to study or test a hypothesis in a scientific experiment.
A. field study
B. trials
C. evidence
D. variable
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Is he short ?
A.No, he isn’t
B.Yes, he is
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Although we are poor, we have ______ three children very well.
A. grown up
B. taken up
C. brought up
D. pulled up
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