S5

A．He studies engineering.
B．He has only recently become interested in philosophy.
C．He wasn’t at the lecture at that time.
D．He thinks the woman should also attend Prof. Warner’s class.

A．Students might not consider them to be an important part of culture.
B．They symbolize the rebellion of youth in the 1950’s.
C．They are discussed in the students’ textbook.
D．They have been worn for hundreds of years.