A. leadership B. team spirit C. personal traits and levels of individual knowledge D. communication skill
A. 对 B. 错
A. slavery B. prejudice C. racial discrimination D. freedom
A. a novel B. a social issue C. a biography D. a true story
A. Langston Hughes B. James Arthur Baldwin C. Martin Luther King D. Walt Whitman
A. Sources B. Mechanism of action Chemical nature D. All of the above
A. Cardiovascular health Brain and nervous system C. Foetus development D. All of the above
A. The internal structure of foods B. The chemical composition of foods C. The types of foods that make up the diet D. The quantity and relative composition of various types of foods in the diet