Some universities even require that all students own or lease a laptop. Some say the focus on technology prepares students for a wired world. "You have to keep up with the rest of the world. Students expect high-bandwidth information, and if you can't deliver it, you're at a competitive disadvantage," states a university president.
A. The topic sentence introduces an effect, and then the details are provided to explain the causes.
B. The topic sentence introduces a cause, and then the effects are described.