the result of the passing signature of subject 2 exam is still valid without confirmation. The following are the matters needing attention about subject 2: 1. Practice straight lines more: Practice straight lines more before backing into the warehouse, and keep the body upright when walking straight, and get off the bus to check if necessary. 2. Find a good reference: when the car body is upright, find a suitable reference for yourself by observing the surrounding things and fix the state of the car body upright in your mind. Pay attention to broaden your horizons and try to refer to distant reference objects. 3. Learn to look in the rearview mirror and correct the direction through the steering wheel: when driving the pile, observe whether the distance between the car body and the side of the library is roughly equal through the rearview mirror, and observe that the car body and the side line of the library are parallel in the rearview mirror.