黑奴贸易所造成的影响主要有 ①加速了西欧的资本原始积累 ②为美洲的开发提供了廉价劳动力 ③给非洲人民带来了无穷的灾难 ④促进了非洲的近代化 A.①②③ B.②③④ C.①③④ D.①②③④补全对话。根据上文,完成下文。1. —Hello! I'm John. What's your name? — — —Nice to meet you, too. —I have some chocolates. —Oh. —Would you like some chocolates? — —Here you are. — 2. —Hello, John! — , Mike, Tom. —Nice to meet you, Tom. — 3. —Let's share the apples. — 4. — oranges are there in your box? —Five.