问题补充：
has been introduced to the students to help them make progress.
A. Many books as well as advice
B. Some advice as well as many books
C. Not only some advice but also many books
D. Some advice and many books
答案：
A. Many books as well as advice
(答案→)B. Some advice as well as many books
C. Not only some advice but also many books
D. Some advice and many books
解析：考查主谓一致：A. Many books as well as advice 是由as well as连接的两个主语，谓语和前面一致，应该是复数，可以排除， B. Some advice as well as many books是由as well as连接的两个主语，谓语和前面一致，应该是单数，对的， C. Not only some advice but also many books 如果not only…but also连接两个主语，谓语用就近原则，也是复数，排除， D. Some advice and many books，这是and连接两个主语，谓语是复数，也是错的，句意：一些建议和书已经被介绍给学生们,帮助他们取得进步。选B。
