鸟卵的下列结构中，将来可以发育成雏鸟的是（   ）

    Based on new analysis, we are rapidly approaching major climate change and the effects on society and the environment could be quite severe. Geographers predict that within the next eighty years, current world climate zones could shift and some could completely disappear. Polar regions will get colder while tropical regions will get even hotter, forcing animals to migrate  (迁徙) north.

    Climate changes like these could lead to the spread of diseases. Tropical storms and hurricanes will not only increase but may also become more intense. If the changes come too quickly, animal and plant species may not be able to adapt fast enough and could disappear.

    According to Science Daily, a new study predicts that by the year 2100, many of today's familiar climates will be replaced by climates unknown in today's world. It is urgent that we reduce the risks of these far-reaching consequences for the whole world. The planet itself has been showing signs of change. In 2004, a serious tsunami created by a major earthquake killed thousands in Sumatra and in 2008, thousands died in China because of another severe earthquake. Egypt was hit in 2009 with a major earthquake and Haiti was devastated in 2010 by yet another massive earthquake.

    Within just the last few months, new reports from around the world have been coming in and most agree that our climate situation is much worse than previously thought. At this point, it doesn't matter what is causing it, but rather, what can be done about it. What's more, our world is getting more and more unstable every year. There is war and threat of war everywhere. Natural disasters are becoming more frequent and serious.

    However, other planets are experiencing global warming as well as our own and some scientists believe there may be some connection between this. No one knows anything for sure at this point because there is simply not enough data.

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                                                                                              我的叔叔于勒（节选）
       父亲神色很狼狈，低声嘟哝着：“出大乱子了!”母亲突然暴怒起来，说：“我就知道这个贼是不会有出息的，早晚会回来重新拖累我们的。现在把钱交给若瑟夫，叫他去把牡蛎钱付清。已经够倒楣的了，要是被那个讨饭的认出来，这船上可就热闹了。咱们到那头去，注意别叫那人挨近我们!”她说完就站起来，给了我一个5法郎的银币，就走开了。
       我问那个卖牡蛎的人：“应该付您多少钱，先生?”
       他回答道：“2法郎50生丁。”
       我把5法郎的银币给了他，他找了钱。
       我看了看他的手，那是一只满是皱痕的水手的手。我又看了看他的脸，那是一张又老又穷苦的脸，满脸愁容，狼狈不堪。我心里默念道：“这是我的叔叔，父亲的弟弟，我的亲叔叔。”
       我给了他10个铜子的小费。他赶紧谢我：“上帝保佑您，我的年轻的先生!”
       等我把2法郎交给父亲，母亲诧异起来，就问：“吃了3个法郎?这是不可能的。”
       我说：“我给了他10个铜子的小费。”
       我母亲吓了一跳，直望着我说：“你简直是疯了!拿l0个铜子给这个人，给这个流氓！”她没再往下说，因为父亲指着女婿对她使了个眼色。
       后来大家都不再说话。
       在我们面前，天边远处仿佛有一片紫色的阴影从海里钻出来。那就是哲尔赛岛了。
       我们回来的时候改乘圣玛洛船，以免再遇见他。