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上期复习
z8 p- x! }1 K# x* ?The workers were glad to hear that their new pay increases were retroactive to the beginning of the previous month.
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6 T1 v# h9 j* u/ W! H# _(从过去的某个时间开始起)生效。
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The experts were hired to enhance the computer system so that it could prepare additional types of reports. - M; |2 o3 z5 u: w3 z
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(Hint: Could the computer already do everything needed?)
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1 I, [6 v9 [. O: [+ M请选择true or false:% I. C4 j7 _0 T2 V
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The computer system was removed and a new one installed.
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9 T5 q+ ~' ]9 _ The original computer system did not do everything the company wanted it to do. # ^/ e/ H5 z- K ~3 h
, ?) z. d6 T c+ c9 U; r% H答案：
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发表于 2012-8-15 00:34:18
