Describe what a slave's collar is (2 sentences at least)

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?

Among the many crucial themes related to politics, a central idea of politics includes the existence of

Match the word to an antonym. 1. hate evil 2. good knowledge 3. sad short 4. sunset love 5. courteous gigantic 6. minuscule dawn 7. long wise 8. imprudent happy 9. cowardice rude