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.

　　64. C) Even wealthy people must work longer to live comfortably in retirement.

　　65.D) Skills are highly valued regardless of age.

关注"566四六级"微信，考后第一时间对答案，看解析！

英语四六级题库【手机题库下载】 | 微信搜索"566四六级"

　　相关推荐：

　　2015年6月英语四六级真题及答案解析※ 关注微信 对答案

　　2015年6月四六级成绩查询时间 ※ 查分免费提醒 ※ 合格分数线

　　四六级评分标准 ※ 最新算分器 ※ 四六级题库估分【手机题库下载】