下列有关分子动理论的说法，错误的是（）

世界海洋和陆地的比例是（     ）

阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。

    Maddy Cullen became a heroine last month. Thanks to her quick thinking, she and Dave Lewis were saved from danger in the 1 .

    Maddy and Dave went to the Scottish Highlands with a group from the Music Now Festival. In the afternoon, the group went 2 on the lake, but Maddy and Dave went hang-glider(滑翔) instead. Unfortunately, above the famous lake Loch Ness, the hang-glider flew into a sudden storm and knocked on a mountain out of 3 . Both Maddy and Dave jumped off the hang-glider before it crashed down(坠毁). They dropped safely in the mountains. But Dave couldn't walk because his right leg was badly injured. He and Maddy had to stay in the mountains and waited for rescuers. They had no food or water, so they were hungry, thirsty and 4 . They felt very worried before the sun set. Then Maddy had a very good idea. She collected many stones and formed a large sign “SOS” on the ground so that pilots in the helicopter could find them 5 .

    Meanwhile, group leader Rob Townsend was also worried when he found Maddy and Dave didn't sail with them. There were no public 6 anywhere nearby. He had to walk a long way to call the police to look for the missing teenagers. A few minutes later, a police helicopter flew over Loch Ness, and the pilot saw Maddy's message from above easily. Dave and Maddy were 7 up and flown to hospital in Inverness quickly.

    A week ago, Maddy spoke to a reporter from the newspaper. “We were very 8 when the helicopter arrived,” she said. “The police told Dave not to move and they carried him into the helicopter. They asked us to put on dry clothes and 9 some hot soup to us. They were great.”

    “It was all because of me,” Dave said. “Rob told us to wear walking boots, and he told us not to leave the group. But I did not listen. I was very silly.”

    The police 10 . On its radio news, they asked walkers in the Highlands to follow instructions carefully and not to take any adventures.

                                                                                            给最爱的他们安全感
       ①每个孩子都被父母指责过不懂事，那句“都是为了你好”听过千遍万遍，“知道，知道，我都知道”也答了千遍万遍。为什么这样的事情一直在发生？
       ②我们的父母有个有趣的标准，听话的就是好孩子，不听话的就是坏孩子。换言之，就是停留在父母框架里的就是父母喜欢的孩子，任何突破框架的企图都是叛逆、不听话、不懂事甚至不孝顺。因为他们怕我们做了糟糕的选择——他们心里没有安全感，对框架之外的世界没有信心。
      ③如果你希望父母尊重你的选择，你必须要给他们安全感——你能对自己的选择负责，可以从小事做起，甚至从妥协做起。让父母有安全感有两条路，一条是最方便的听话之路，父母要求你做什么就做什么。这条路在你长大之后会越来越难走，你会分不清楚“他们想要什么”和“你想要什么”。
       ④一条就是有些难度的独立之路，你要比他们更强大。这句话的意思不是你要通过压倒他们来达到强大，而是你要通过理解他们和保护他们变得更强大，强大到他们能够意识到你能照顾好自己了，甚至能照顾他们了。不要等他们老了，你才觉得该照顾他们了。说到这里，你会不会笑——给父母安全感？
       ⑤真的，试试从这个角度去理解你们的关系，就会明白许多的冲突并不是他们不尊重你，而是他们没有安全感，他们不知道你已经长大。
       ⑥所以你要更努力，试着去理解自己的父母。他们为你提供了那么长久的爱和安全感，现在，轮到你了。长大吧！