Many students do not like tostudy history(历史).They say that there are【C1】______ many names and dates to【C2】______ .But if we do

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问题    Many students do not like tostudy history(历史).They say that there are【C1】______ many names and dates to【C2】______ .But if we do not know about the【C3】______ ,we can not understand the present well.For example,if we wish to know how men【C4】______ to use fire,we have to know what men did【C5】______ the past to travel at night or to keep themselves【C6】______ in cold nights.Only a study of history will make US realize(意识到)【C7】______ everything we do today is the result of what【C8】______ people did in the past.
   As we【C9】______ history,we learn many interesting【C10】______ .History helps US understand our  present life better.
【C4】

选项 A、learn
B、learnt
C、was learning

答案B

解析 本题考查时态。根据上下文可知,要想知道人类如何使用火,就必须明白他们如何在夜间赶路或者取暖,这些动作均发生在过去,故B正确。
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