45、O volunteering
56、B It will protect them from sunburn
57、A I is ineffecitive in preventing melanomas
58、D Daily application of sunscreen helps reduce the incidence of melanomas
59、C It is not based on sirect observation of the subjects
60、A A Using both covering up and sunscreen. 61. B) Well-educated people tend to work longer. 62. B) A rapid technological advance. 63. A) Economic growth will slow down. 65.D) Skills are highly valued regardless of age. 参考译文：
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6月英语四级考试真题及答案(卷一完整版)
45、Ovolunteering56、BItwillprotectthemfromsunburn57、AIisineffecitiveinpreventingmelanomas58、DDailyapplicationofsunscreenhelpsreducethei
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