Class2造句

Class2 Reflex: The florets in this class curve downward and overlap, similar to bird plumage.

S1: Class2 has20 cartoon books. There are28 more comic books than cartoon books. How many comic books are there?

S2： Class2 has20 cartoon books. Cartoon books are28 less than comic books. How many comic books are there?

两周前，雅虎与微软以及美国在线建立合作伙伴关系，三方可以在彼此的网站上销售各自的“二级”(Class2，意即不太受欢迎的)显示广告。