【单选题】One should be careful, however, of supposing that silent reading came about simply because reading aloud is distraction to others. What does this red word mean in this article?
【简答题】Read the passage and make the best choice. A组阅读 The first calender.docx 1 In assuming that calendars came into being with the advent of agriculture, historians made the mistake of _____ . a. relying s...
【简答题】Christian Huygens (1629–1695), the greatest clockmaker in history, suggested that an international unit of length could be defined as the length of a pendulum having a period of exactly 1 s. Ho...