在一个普通的高中五月，一场意外的生理课却让整个班级惊心动魄。小北本以为这是一节普通的生理学课程，却在最后一刻发现了足以改变他人生的一切。
那天下午，李老师站在讲台上，手拿一本厚重的课本，眉头微皱，仿佛在思考什么深奥的问题。教室里安静得能听见钟表的滴答声，所有同学都把目光投向那个坐在第一排的小北。
突然，一支带着药液的银色药签从窗外飘了进来，在小北的眼前划出一道惊心的弧线。他愣了一下，下意识地看向自己的手指——那是一块正在滴落的药液，每滴都清晰可见。
李老师的声音突然变得沙哑起来：“同学们，今天我们要学习的是关于人体生理调节的知识。特别关注……”他的手指停顿了一下，指节分明，指甲边缘锋利如刀，与窗外飘进来的药液交织在一起。
“今天的作业是完成课本上的习题，特别注意最后一道大题！”
话音未落，小北Already saw the drug capsule drift into his palm. His heart rate increased involuntarily, and his fingers instinctively tightened around the pen in his hand.
The classroom was unusually quiet, as if a heavy veil had been drawn over it. Everyone’s attention was focused on him, their eyes闪亮， waiting for a reaction they didn’t expect.
As soon as he opened his textbook, a strange sensation washed over him—a tingling sensation spreading from his fingertips through his arms and up to his head. His pulse quickened further, and his breathing became shallow and irregular.
“同学们，今天的作业是完成课本上的习题，特别注意最后一道大题！”
His heart pounded furiously against his chest, as if it were beating out of control, but all he could think about was the strange tingling sensation that had just arisen. His fingers trembled slightly as he flipped through the pages of his textbook.
“特别关注……” He paused, his gaze returning to the front of the classroom. The faint outline of a drug capsule was still imprinted on his fingertips, and it felt like something unseen was watching him closely.
The classroom was unusually quiet, as if a heavy veil had been drawn over it. Everyone’s attention was focused on him, their eyes闪亮, waiting for a reaction they didn’t expect.
As soon as he opened his textbook, a strange tingling sensation washed over him—a tingling sensation spreading from his fingertips through his arms and up to his head. His pulse quickened further, and his breathing became shallow and irregular.
“同学们，今天的作业是完成课本上的习题，特别注意最后一道大题！”
His heart pounded furiously against his chest, as if it were beating out of control, but all he could think about was the strange tingling sensation that had just arisen. His fingers trembled slightly as he flipped through the pages of his textbook.
“特别关注……” He paused, his gaze returning to the front of the classroom. The faint outline of a drug capsule was still imprinted on his fingertips, and it felt like something unseen was watching him closely.
The classroom was unusually quiet, as if a heavy veil had been drawn over it. Everyone’s attention was focused on him, their eyes闪亮, waiting for a reaction they didn’t expect.
As soon as he opened his textbook, a strange tingling sensation washed over him—a tingling sensation spreading from his fingertips through his arms and up to his head. His pulse quickened further, and his breathing became shallow and irregular.
“同学们，今天的作业是完成课本上的习题，特别注意最后一道大题！”
His heart pounded furiously against his chest, as if it were beating out of control, but all he could think about was the strange tingling sensation that had just arisen. His fingers trembled slightly as he flipped through the pages of his textbook.
“特别关注……” He paused, his gaze returning to the front of the classroom. The faint outline of a drug capsule was still imprinted on his fingertips, and it felt like something unseen was watching him closely.
The classroom was unusually quiet, as if a heavy veil had been drawn over it. Everyone’s attention was focused on him, their eyes闪亮, waiting for a reaction they didn’t expect.
As soon as he opened his textbook, a strange tingling sensation washed over him—a tingling sensation spreading from his fingertips through his arms and up to his head. His pulse quickened further, and his breathing became shallow and irregular.
“同学们，今天的作业是完成课本上的习题，特别注意最后一道大题！”
His heart pounded furiously against his chest, as if it were beating out of control, but all he could think about was the strange tingling sensation that had just arisen. His fingers trembled slightly as he flipped through the pages of his textbook.
“特别关注……” He paused, his gaze returning to the front of the classroom. The faint outline of a drug capsule was still imprinted on his fingertips, and it felt like something unseen was watching him closely.
The classroom was unusually quiet, as if a heavy veil had been drawn over it. Everyone’s attention was focused on him, their eyes闪亮, waiting for a reaction they didn’t expect.
