一个密闭不透明的盒子里有若干个白球，在不允许将球倒出来的情况下，为估计白球的个数，小刚向其中放入8个黑球，黑球和白球除颜色外完全相同，摇匀后从中随机摸出一个球记下颜色，再把它放回盒中，不断重复，共摸球400次，其中80次摸到黑球，估计盒中大约有白球（　　）

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

       Suppose you broke a cup or a bowl by accident, how would you deal with the brokenpieces? One day, Alice was washing ____(dish)．Suddenlyshe broke a beautiful plate ____(care)．Onhearing the sound, her father ran out of the study at once to see ____ his daughterwas hurt. ____ his relief, she was fine, so the father comforted her and toldher just to throw the broken pieces directly into the dustbin.

However,Alice said nothing.She picked up the pieces on the floor one by one.She evenlooked everywhere to make sure there were no pieces ____(leave)．Then Alice asked her father for someold newspapers and ____ plastic bag.

           The father felt confused.He wondered what she was going to do.After Alice____(wrap) the broken pieces with newspapers, she put ____(they) into theplastic bag, together with a card ____(say) “ Danger! Broken plate！” Finally, she placed the plastic baginto the dustbin.Not until then did the father realize how ____(consider) hisdaughter was.He learned a lesson from her!

把陈述句换成把字句

①八路军消灭了敌人。

②云朵遮住了太阳。

阅读下面的文言语段，完成小题。
                                                                                                 曹刿论战
     十年春，齐师伐我。公将战。曹刿请见。其乡人曰：“肉食者谋之，又何间焉？”刿曰：“肉食者鄙，未能远谋。”乃入见。问：“何以战？”公曰：“衣食所安，弗敢专也，必以分人。”对曰：“小惠未徧，民弗从也。”公曰：“牺牲玉帛，弗敢加也，必以信。”对曰：“小信未孚，神弗福也。”公曰：“小大之狱，虽不能察，必以情。”对曰：“忠之属也。可以一战。战则请从。”
      公与之乘。战于长勺。公将鼓之。刿曰：“未可。”齐人三鼓。刿曰：“可矣。”齐师败绩。公将驰之。刿曰：“未可。”下视其辙，登轼而望之，曰：“可矣。”遂逐齐师。
      既克，公问其故。对曰：“夫战，勇气也。一鼓作气，再而衰，三而竭。彼竭我盈，故克之。夫大国，难测也，惧有伏焉。吾视其辙乱，望其旗靡，故逐之。”
                                                                                                                    （选自《春秋左传注》）