What was he good at when he was at school

A．Jim is the second child in his family.
B．Jim has a younger sister.
C．Jim is the third child in his family.
D．Jim is the only child in his family.

A．all the Americans like to keep cats
B．the cat is called Buddha because he is always quiet
C．the population of a small university is only one third of that of the largest one
D．it is easier for a graduate from a large university with a famous department to do job hunting.