When classmates are asked to rate each other’s likability, ________ children get many positive votes, whereas ________ children are seldom mentioned

How much larger are the brains of Homo sapiens than the brains of the early Homo species that immediately preceded us?

a. approximately 100cc b. approximately 300cc c. approximately 500cc d. approximately 700cc

Neonatal mortality has ______ across ethnic groups in the United States since 1980

a. increased sharply b. dropped steeply c. remained the same d. decreased little