1. Pencil sharpeners (no knives) and erasers (卷笔刀,橡皮,但禁止使用小刀); 2. Calculator batteries (and screwdriver for battery replacement) (计算器备用电池,拆卸计算器的螺丝刀); 3. Eyeglasses (眼镜); 4. Earplugs (耳塞); 5. Wristwat...