四级核心词汇练习lTest l40 Exe.l Test: 40 Exe.l 1. Students and teachers can participate in excursions to lovely beaches around the island at regular _. A. Gaps B. rate C. length D. intervalsl （D)Excursions: a short journey by several peoplel A. gaps: 间隙；缝隙；分歧/ a in the door; generation ; l B. rate : ratio 比率；速度；等级l C. length: 长度l D. intervals: ( 时间或空间的）间歇；间隔；空隙l 2. Physics is _ to the science which was called natural philosophy in history.l A. alike B. equivalent C. likely D.uniforml (B) l A. alike: be
