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            • 1．

              Citizens of the world’s advanced nations will find __________ increasingly difficult to keep up with the demand for change.

              难度：较难
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            • 2． 突然我想起在那个年代，一个女子学医是多么的困难啊。

              Suddenly                               how difficult it was for a woman to get medical training at that time.

              难度：较易
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            • 3． 我发现学英语很难。

                 I find ________ _________ _________ learn English.

              难度：较易
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