以下关于胎生、哺乳的叙述，不正确的是（　　）

 

阅读短文，从方框中选择恰当的词并用其适当形式填空，使短文完整、通顺。每词限用一次，其中有两个词是多余的。

as，sound，they；clever，send，imagine，heavy，hear，lucky ，know，if，follow

    Mr. and Mrs. Brown were farmers in South Australia．They lived there for many years．They had a kangaroo(袋鼠)in____family．The kangaroo was called Lulu．Several years ago，Mr. Brown’s son gave Lulu to him ____a gift for his 60th birthday. Soon Mr. Brown and Lulu became good friends and Lulu often ____ him around the farm．
    One day when Mr. Brown was working on his farm，a(n)____tree branch(树枝)fell on top of top of him suddenly(突然)．Mr. Brown fell to the ground(地面)and didn't____what happened next．Lulu stood next to Mr. Brow’s body．She started barking(叫)and didn't leave Mr. Brown．“She ____like a dog．She barked and barked．And she didn't stop．”said Mrs. Brown．After ____Lulu's barks, Mrs. Brown quickly went to see what had happened．She saw Mr. Brown lying on the ground and____him to the hospital right away．____，Mr. Brown was saved．
     “Lulu is great!”said Mr. Brown．“She saved me! She is a friendly and very ____ kangaroo．”After Mr. Brown left the hospital, he took Lulu everywhere he went．

新疆的棉花产量高、质量好的主要自然原因是（　）

如图，在直角坐标系中，直线AB与x、y轴分别交于点A（4，0）、B（0， $\frac{16}{3}$ ）两点，∠BAO的角平分线交y轴于点D，点C为直线AB上一点以AC为直径的⊙G经过点D，且与x轴交于另一点E．

阅读材料，完成下列要求。

微公益：全民公益的造梦行动

    一份免费午餐，让万千贫困学子不再饿着肚子上课。一场微博打拐，唤醒了公民对打击拐卖儿童犯罪的热忱。一次冰桶挑战，让大家意识到公益原来不全是悲情。

    中国正大步流星跨向公益新时代。只要有爱心，每个人都有机会投入公益，哪怕在社会底层，也能日行一善，比如随手清理路边的垃圾，比如给老弱病残让座，甚至，哪怕只是给迎面而来的路人一个微笑。每个人都有体温，每个人哪怕仅仅用体温都可以温暖同胞，温暖世界。这就叫微公益，也正是全民公益之精髓所在。它的要义倒还不是通常所称的好人好事，而是每个人都用爱心，用善意来创造价值，回报社会。不仅让世界充满爱，充满善，更让自己获得快乐和尊严。

    就此意义而言，所谓全民公益，微公益，毋宁说是微革命。它的意义不限于公益层面，更提供了变革社会的新方法、新范式。无须沉湎宏大叙事，无须空谈根本解决，无须凌空蹈虚，中国不是别的什么，中国更多是微观的，正如一位智者所称：你所站立的那个地方，正是你的中国；你怎么样，中国便怎么样；你是什么，中国便是什么；你有光明，中国便不黑暗。微公益，或者说微革命，就是点燃每个人的心灯，每个人心中酌爱和善，用它们照亮中国，照出一个光明的新中国。