— I can't understand the teacher in class. He speaks too fast.

— _____ can help you a lot.[ ]

A．Working with a group

B．Practicing listening

C．Reading the textbook

D．Making flashcards

我国刑法在空间效力上，采用的是以( )为主，兼采其他原则。

A．保护原则

B．属人原则

C．属地原则

D．普遍原则