Para.1 2.Students looked over each other's shoulders, devised coughing codes to communicate to friends, and flashed answers on the backs of their hands while pretending to stretch. 译文： 学生们你看我的，我看你的，设计各种咳嗽暗号传送给 朋友，还把答案写在手背上，在假装伸懒腰的时候迅速 透露出去。 2. Students looked over each other’s shoulders, devised coughing codes to communicate to friends, and flashed answers on the backs of their hands while pretending to stretch. Para. 1 译文： 学生们你看我的，我看你的，设计各种咳嗽暗号传送给 朋友，还把答案写在手背上，在假装伸懒腰的时候迅速 透露出去