题目内容：

    If you stayed up or had a bad night of sleep last night， you know it's difficult to stay awake in class today． Your teacher's voice might begin to sound like a lullaby（催眠曲）．1.To keep yourself awake， some tips are worth trying in class．

Sit in the front of the room． Why？2.Besides， it'll be easier to pay attention and participate when you're in the front． You'll also be near the people who are more likely to participate， and the sound of their voices might keep you awake．

3.Ask and answer questions and pay attention to the lecture． This will help if you're tired or discouraged by the content of the lecture， because you can ask your teacher questions to get to the bottom of the problems． Talking will also keep you engaged and alert． It might be helpful to make a goal for yourself to answer or ask at least 3questions per class．4.For example， you might say "I didn't understand the last part of the proof． Could you explain it again in more detail？"

Listen actively to the lesson． Active listening is a great way to force yourself to stay awake because it requires engagement of your mind as well as your body．5.To effectively listen to your teacher， you should try to maintain eye contact， face the speaker， pay close attention to what the speaker is saying and ask questions during a pause in the lecture．

A． Participate in class activities．

B． Develop interest in the subject．

C． If so， classrooms can be boring because you're tired．

D． Keep silent all the time and try to catch as much information as possible．

E． To avoid annoying your teacher you should try to keep your questions on topic．

F． You'll be more motivated to stay awake if you know that the teacher can see you easily．

G． Practicing active listening can help you keep your eyes open for the length of the lesson．