问题详情：
阅读短文
Ms James: This morning’s class is about first aid (急救), or offering someone medical help. Let’s imagine an accident. A boy is lying on the ground. He isn’t moving or making a sound. He is in a lot of pain (痛苦万分). What can we do to help him?
Betty: First of all, find out what’s the matter with him.
Ms James: How do we do that?
Betty: Ask him.
Ms James: Ok. But he could have trouble hearing you or speaking to you.
Lingling: Shout for help? Call 120?
Ms James: Good idea, but what should we do before help arrives?
Tony: Make him comfortable.
Ms James: And how can we do that?
Tony: Lift him up and sit him on a chair?
Ms James: No, that could be dangerous! You could drop him and hurt him even more. Betty, you must know! You did some medical training.
Betty: Make sure he’s warm. Cover him with a coat.
Ms James: That’s such good advice that you could be a doctor, Betty!
根据短文内容，判断下列句子正误。正确的用“A”表示，不正确的用“B”表示。
1. Not all the students in Ms James’ class know the enough knowledge (知识) about first aid.
2. We should move the boy to a more comfortable place before help arrives.
3. It is a good idea to keep the boy warm.
【回答】
1A 2B 3A
知识点：日常生活类
题型：阅读理解
