在线网课学习课堂《学术英语素养与思辨能力培养（华北电大 ）》单元测试考核答案.docx

注：不含主观题 第1题 单选题 (1分) 1.?A scientist planted two groups of plants under identical conditions of light, temperature, humidity, and moisture. Every day he would play sound effects of thunderstorms to one of the group of plants and sounds of city traffic for the other. The group of which he played thun