Safe Driving第 39 / 120 题
How often should you check your mirrors while driving?
a.Regularly, about every 5 to 8 seconds, and before any lane change, turn, or speed change
b.Only when changing lanes
c.Once every mile
d.Only when another vehicle sounds its horn
解析
Frequent scanning every few seconds keeps you aware of traffic entering your blind spots and of your own vehicle and cargo. Checking only at lane changes, at fixed mileage, or after a horn means you learn about hazards too late.
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