1 . 哪怕这项新的科学发现应用于工业生产中可能要等上好几十年的时间，这也是值得的。(before) (汉译英)
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2 . 互联网时代创造了共享经济，唯有谨慎对待，我们方能从中受益。(unless) (汉译英)
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4 . Given that cleaning up the environment is a collective effort, we will not be able to achieve significant progress ______ everyone takes responsibility for their action.

A．while

B．since

C．until

D．unless

5 . 节日对社会有巨大影响，反映出人们的愿望、信念、信仰和对生活的态度。(have an impact on…; reflect)(汉译英)
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7 . 不管节日看上去有多么的不同，它们总是给人们带来快乐、感恩和和平。(no matter how+adj.)(汉译英)
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