核燃料操作人员应经过严格的培训、考核、授权后上岗。
参考答案：对
男生比女生多全班人数的20%，女生就比男生少全班人数的20%．______．
给我们介绍一下你自己。
1. What's your name?
_________________________________
2. What's your favourite food?
3. What colour are your eyes?
4. What do you do with your ears?
5. How many ears do you have?
