单项选择题

A.2—4 times
B.4—6 times
C. 6—8 times
D.About 10 times
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单项选择题
A. Drive in a straight-line B. Walk along a white line. C. Pass the breath test D. All of the above
A. Drive in a straight-line
B. Walk along a white line.
C. Pass the breath test
D. All of the above
填空题
Step 1
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