The utilities' charts show that the______ majority of air pollution in the region results from natural dust.

A．it was impossible to predict which' friendships would develop
B．in the long run, people get on better with those who are like them
C．students split up as soon as they discovered differences in attitudes
D．students immediately recognized others with similar attitudes and interests

A．opposites get on better than similar personalities
B．exactly the same bases for success apply for ordinary friendships
C．it is first of all necessary to limit prospective partners to people from similar backgrounds
D．the most successful are those between people who are alike but not exactly the same