20世纪的和平与战争

    材料一    对朝鲜的攻击已无可怀疑地说明，共产主义已不限于使用颠覆手段来征服独立国家，现在要使用武装的侵犯与战争。它违抗了联合国安理会为了保持国际和平与安全而发出的命令。在这种情况下，共产党部队的占领福摩萨，将直接威胁太平洋地区的安全，及在该地区执行合法与必要职务的美国部队。

据此，我已命令第七舰队阻止对福摩萨的任何攻击。作为这一行动的应有结果，我还要求福摩萨的中国政府停止对大陆的一切海空行动。第七舰队将监督此事的实行。福摩萨未来地位的决定，必须等待太平洋安全的恢复、对日本的和平解决、或联合国的审议。

──杜鲁门总统声明（1950年6月27日），哈里•杜鲁门著《杜鲁门回忆录》

    材料二    在今天的情况下，共产党俄国和它的盟国中国在政治体制上对东南亚施加的影响，不管它们采取的是哪一种手段，对整个自由世界来说都将是一种严重的威胁。美国认为不能消极地来承认这种可能性，而是应该采取联合行动来对付它。这样做或许要冒严重的风险。然而，假如我们今天不敢下定决心去解决的话，那么几年以后我们将面临更加严重的危机。──《美国国务院公报》（1954年1月25日）

500克盐水中含有50克盐，那么盐和水的重量比是（  ）

    The reality show(真人秀节目) "Where are we going, Dad?" becomes a hit show on TV these days. This TV show is about dads and children who are from five different families. They will complete some hard tasks without moms in three days and two nights. The five dads have to play the roles of "dad" and "mom" at the same time. All of the five dads are famous people and they must forget their popularity but do as a normal father. The cell and toys aren't allowed to use in the show. They have to live in a very tough environment. At first, all the five children cry. After all, they are just 4-6 years old. They never experience life in the countryside. But later they are all used to this kind of exciting life with their father.

    Among the five star kids, four-year-old Kimi impresses people most. During the TV show, Kimi is well-behaved, never shouts at others and always listens to his father, Jimmy.

    "The whole experience teaches him a lot," Jimmy says. "He now knows how to behave well in public and how to be patient."

    Jimmy's soft parenting skills, Kimi's cute face and their warm interaction on the show win many viewers' hearts.

关于我国气温分布的叙述，不正确的是