Broaden horizons, stimulate the interest in science
shows(就近原则，their friend 是单数，故用单三形式)advertisenments（广告，前无不定冠词，故用复数）
B 指人用elder
Edison was interested in science when he was a
279 浏览
94 浏览
195 浏览
250 浏览
290 浏览