练习材料：
L38-1: The first calendar
Future historians will be in a unique position when they come to record the history of our own times.
They will hardly know which facts to select from the great mass of evidence that steadily accumulates.
What is more,
they will not have to rely solely on the written word.
Films, videos, CDs and CD-ROMS are just some of the bewildering amount of information they will have.
They will be able, as it were, to see and hear us in action.
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
He has to deduce what he can from the few scanty clues available.
Even seemingly insignificant remains canshed interesting light on the history of early man.
Up to now,
historians have assumed that calendars came into being with the advent of agriculture,
for then man was faced with a real need to understand something about the seasons.
Recent scientific evidence seems to indicate that this assumption is in correct.
应用配置：L0+L4
知识笔记： unique/juˈnik position/pəˈzɪʃən select/səˈlɛkt evidence/ɛvədəns steadily /stɛdəli accumulates/əˈkjumjəˌleɪts rely/rɪˈlaɪ solely/soʊəli bewildering/bɪˈwɪldərɪŋ reconstruct/rikənˈstrʌkt deduce/dɪˈdus scanty/skænti insignificant/ɪnsɪgnˈjɪfɪkənt shed/ʃɛd assumed/əˈsumd advent/ædˌvɛnt assumption/əˈsʌmpʃən
练习感悟：又是晚上学习＋超时的一篇，老是卡在第二段的那个calenders单词上，晚间过了十二点才最终搞定。
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