题目

已知3.2g某气体的分子数目为3.01×1022 ， 由此可推知该气体的摩尔质量是（    ） A . 64 g B . 32 g•mol﹣1 C . 32 g D . 64 g•mol﹣1 答案：D阅读理解。阅读短文，判断正(T)误(F)。     Good morning,  class!   I'm Miss Li,  your new English teacher.  I'm very happy to meet you.  Can I  know your names?  This is Jim.  He is an English boy.  Oh,  that's Kate.  Sit down,  please.  Thank you!  (     ) 1. It's in the morning. (     ) 2. Miss Li is a teacher.   (     ) 3. Jim is a girl. (     ) 4. Kate is a teacher,  too.  (     ) 5. Miss Li,  Jim and Kate are in the classroom now.