In the group discussion, they thought up three different __________to solving the environmental problem.

完形填空
    In China, almost everyone knows Ma Yun. Ma Yun became one of1 men in China when his company Alibaba went on the stock（股票)market last year with a value of around £140 billion-the largest public offering in history.2 amazing thing it is! Here are some stories about him on the way to 3 .
    Ma made his4 trip to the US in 1995 and used the Internet 5 the first time. After 6 for "beer”, he saw that no results 7up about China. Then he searched for "China” and still saw no results. He decided to set up a Chinese website--the seed for Alibaba was sown(播种).Ma said he 8 many times in his life. He failed the College Entrance Examination in China three times and9 companies offered him jobs, including one at KFC. And he was refused by the famous Harvard University 10 times.
    Learning English was difficult when Ma was a teenager 10limited resources. However, he found that he could learn English well by giving tourists free guides around 11 hometown Hangzhou. And he kept it for nine years. Ma said that tourists opened up a new world for him because everything they said and did was so different from 12 he had been taught at school and by his parents.
    Ma's hero is Forrest Gump13never gives up. When he made a speech about his success at Davos(达沃斯论坛)in 2015,Ma said, "Life14 a box of chocolates because you never know what you are going to get.”15 as Ma does, never give up and you will be successful one day.

有一个1万人的小镇，随机调查3000人，其中450人，其中450人看中央电视台的晚间新闻，在该镇随便问一人，他（她）看中央电视台晚间新闻的概率是  （   ）

阅读下列材料:
材料一:  白先勇策划的青春版昆曲《牡丹亭》从2004年“首演开始,99场演出场场爆满,反响非常好”｡“让年轻人一生之中至少看一次昆曲,改变他们对传统艺术的想法,这是白先勇将青春版《牡丹亭》引进高校的原因”｡“《牡丹亭》连接传统与现代,让大众欣赏传统戏剧,这是正统､正派､正宗的演出｡”白先勇说,“我们不是迎合大众,而是做出美的东西来教育大众｡”

                                                            ——根据报刊摘编

材料二:  (非物质文化遗产的)“保护”指确保非物质文化遗产生命力的各种措施,包括这种遗产各个方面的确认､立档､研究､保存､保护､宣传､弘扬､传承(特别是通过正规和非正规教育)和振兴｡

                                                 ——《保护非物质文化遗产公约》

请回答:

2003年初，美国总统布什在国会发表咨文，宣布已经掌握萨达姆政权隐藏大规模杀伤性武器的证据。之后，国会授权总统在必要时采取一切措施。这体现了美国政治体制中（    ）