答案：A

题目分析：句意：许多学生相信他们对于课程和大学的选择应该依靠他们的兴趣。base on以……依据，choice与base on是被动关系，故选A。

点评：本题难度适中。动词的语态是近几年高考的热点，需要考生有分析理解复杂的句子结构的能力。

即学即练：New policies, _______ to ensure that compulsory education is truly free, _______by the local government across China since the start of school on September 1.

A．intending; have been made known B. intended; have been made known

C．intending; are made known      D. intended; had made known

解析：B。(be) intended to do sth“目的在于…; 打算做某事...” 作定语;new polices与know是被动关系，而 since the start of school on September 1说明对现在的影响，所以用现在完成时的被动语态。