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79. The word “focus on” (underlined in the last paragraph) probably means _________.
A. to fix one’s eyes on one point
B. to arrange the camera lens on one point
C. to give a lot of attention to one particular subject
D. to take care to do something special
A. to fix one’s eyes on one point
B. to arrange the camera lens on one point
C. to give a lot of attention to one particular subject
D. to take care to do something special
参考答案