A、 Rapper Kanye West calls for zero cost of textbooks.
B、 The cost of university textbooks increased dramatically from January 1977 to June 2015.
C、 The increase of the cost of university textbooks is at three times the rate of normal inflation.
D、 Rapper Kanye West regards that the cost of university textbooks is too high for the Americans.

【正确答案】 A

【答案解析】解析：根据录音原文，Rapper Kanye West 说道“We have to lower the price of textbooks”，故Rapper Kanye West 是要求降低 textbook 的价格，而不是要求 textbook 零成本，故选项A)正确。

A、 There are some requirements for people to use materials from OER.
B、 Students in the Z-degree program can use the materials from OER for free.
C、 Not everyone can use materials from OER.
D、 The use of the content of OER needs copyright.

【正确答案】 B

【答案解析】解析：根据录音原文“Students in the Z-degree program do not have to pay for any of the required course materials. OER are free educational materials anyone can use for any purpose. “故 Students in the Z-degree program 可以免费使用 OER 的材料，选项B) 为正确答案。

A、 The competition among them is fierce.
B、 They do not want to reduce cost.
C、 There is more they can do for the students.
D、 They will offer free textbooks.

【正确答案】 C

【答案解析】解析：根据录音原文“She argues that the publishing industry does not do enough to help students. ”选项C)正确。根据录音原文，其余选项皆不正确。