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3[音频]听录音，回答3-5题。

A. She has coughed a lot.
B. She has a high fever.
C. She has got a pain in the stomach.
D. She has got a bad cold.A

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A. This morning.
B. This afternoon.
C. Last night.
D. Yesterday.

A. Take her blood pressure.
B. Give her some medicine.
C. Perform an operation on her at once.
D. Send her to the emergency room.

A. 左转
B. 右转
C. 直行
D. 停止

A. 防止小车车速过快，寻迹模块来不及反应导致无法循迹
B. 防止小车不能正确拐弯导致无法循迹
C. 防止小车无法识别黑线