填空题
A.Women are better at taking care of children. B.Many men value work more than their family. C.Their number is too small to make a difference. D.Not many men have the chance to stay at home.
A.It is ineffective in preventing melanomas. B.It is ineffective in case of intense sunlight. C.It is ineffective with long-term exposure. D.It is ineffective for people with fair skin.