试卷你对得起树木么
[shì juăn nĭ duì dé qĭ shù mù me]
This username suggests a sarcastic or self-deprecating tone. It implies the user feels guilty or ashamed for wasting paper on exams. The user may feel that they have done many exams which consumed lots of wood (to make paper), hence this playful scolding at the exam paper.