***说：我们的思想文化，既要深深根植于优秀传统沃土之中，又要随着历史和传统前进。阅读材料，回答问题。

材料 汉武帝几乎和秦始皇一样信奉法家思想，不过据说在其统治时期他实行了“罢黜百家，独尊儒术”的政策。其实儒家思想取得胜利是一个缓慢的过程……与其说儒家思想征服了汉代学者，不如讲是汉代学者改造了儒家思想。 ——费正清《中国：传统与变迁》

根据所学知识，概括指出秦始皇信奉法家思想的主要措施。汉武帝时儒家思想取得胜利有何影响？

    Mr Black was walking in the forest（森林） He was scared when he heard a terrible noise. But he could not get out of the forest. His friends were waiting for him in a village outside the forest. They would give him a lot of money if he took a tiger to them, or they were going to laugh at him.
    Mr Black liked hunting(打猎). He usually killed some birds and animals. But a week ago, after he drank too much, he called himself a brave hunter. So his friends bet(打赌) him twenty thousand dollars if he could kill a tiger.
    Suddenly, he heard a little noise. He ran to a big tree,and climbed up it quickly.He didn't come down until he saw it was a farmer. He went close to him and asked, “Excuse me, sir.Are there any tigers in the forest?”
    “Yes,” said the farmer. “I saw a lot of tigers' tracks（足迹）about a kilometer north near here.”
“Good!”Mr Black said in a hurry. “Which way is to the south,then?”

二次根式 $\sqrt{-x}$ 有意义，则 $x$ 的取值范围是____．

目前，许多地方提出倡导“绿色旅游”的口号，这主要是针对（  ）

李大爷去医院检查，发现尿液中有蛋白质和血细胞，可能是他泌尿系统的哪个部位发生病变？（  ）