问下一下学科要写什么书？还有一些问题（书如果可以的话。想提前买好。）

1 managing communication in business
2 introduction to management
3 business informatiopn systems
4 marketing principles
5 accounting decisions and accountability
6 microeconomics
7 introduction to law
8 quantitative methods in business
9 financial accounting process

读的是阿大的快捷课程。以上是大一的课程。9个里面选择8个。
想问下熟悉这些课程的人。
若我以后想学 bachelor of commerce(international business).bachelor of finance.
最好选择哪8个？
还有上面的9个哪些学起来比较容易哪些比较困难？

没有人能够回答我么。。囧。