To read Tolstoy and ____ to the nineteenth century Russian literature are two excellent reasons for taking Professor Morrel’s course.

A．to introduce

B．introduce

C．being introduced

D．to be introduced

《产业结构调整指导目录(2005年本)》由鼓励、限制和淘汰三类目录组成。不属于鼓励类、限制类和淘汰类，且符合国家有关法律、法规和政策规定的是( )。

A．许可类

B．允许类

C．提倡类

D．支持类