1950年，苏联政府发行邮票，纪念列宁创办《火星报》50周年(如图)。列宁当时创办该报主要是

    Perhaps you've seen the English letters “WC” in your city. They show public toilets. But do you know it is far from elegant (优雅的) English? In fact, foreigners from English-speaking countries rarely use the letters.

    Workers in our city are changing “WC” signs all over the city. The government is spending much money changing all the bad English on signs and restaurant menus. Many other places in China are following our steps.

    “WC, or water closet, is old-fashioned English. It sounds dirty to me,” says Charlie Shifflet, a young man from the US. The old sign will become “Gents/Men” and “Ladies/Women”.

    “I see lots of poor English in everyday life, and not only on signs,” he says. “I know what they mean. But they are Chinglish, not real English. For example, when someone says to me 'My hometown is Henan Province', I know he should say: 'My hometown is in Henan Province'. 'Hometown' is a smaller place in a province.” The common mistakes he picked up include “Not Entry”, which should be “No Entry”, “Direction of Airport” should be changed to “To the Airport”. And it is “room rate”, not “room price”. And remember to “Keep off the grass”, rather than “Care of the green”.

在信息时代，个人隐私的保护成为经济发展、产业升级和社会文明提升的一个瓶颈。由于信息不对称，公众用户始终处于弱势，但只要信息技术企业意识到保护个人隐私的重要性并加强行业自律，就能对个人隐私进行完全保护。当然，保护个人隐私是一个渐进的过程，企业制订出相关行业规定，就能将保护个人隐私工作落到实处。信息技术产业方兴未艾，如果现在就将其置于政府监管之下，信息企业必能马上认识到保护个人隐私不只是保护用户的利益，也是在奠定自己发展的基础，迅速开创全社会共赢的局面。

①单凭企业意识到重要性并加强行业自律是不能完全保护个人隐私的。

②____。

③____。

如图所示，将同一个鸡蛋先后放入甲、乙两杯盐水中，鸡蛋在甲杯中处于悬浮状态，在乙杯中处于漂浮状态。则鸡蛋在两杯盐水中受到的浮力   F_甲____ F_乙 ，两杯盐水的密度ρ_甲____ρ_乙 。