Mr Smith had a week's vacation, so he said,“I'm going to the seaside by train. ”He put on his best clothes, took a small bag, went to the railway station(车站)and got into the train. He wore a beautiful hat, and he often put his head out of the window during the trip and looked at the beautiful scenery. Suddenly, the wind pulled his hat off.
     Mr Smith quickly threw(扔) his old bag out of the window, too. The other people in the train laughed,“Is your bag going to bring back your beautiful hat?” they asked.
    “No,” Mr Smith answered.”But My name and address are on the bag. If someone finds both of them, he or she will send me the bag and the hat.” 

纤维素是地球上含量最丰富的多糖类物质，下列是关于分离土壤中能够分解纤维素的微生物的相关问题，请回答：

（1）自然界中纤维素含量最高的天然产物是____ ．某些微生物能分解纤维素，因为他们能产生纤维素酶，纤维素酶至少包括三种组分，即____

（2）实验室中筛选微生物的原理是____ ．筛选纤维素分解菌应先将从土壤中获得的微生物，在以纤维素为唯一碳源的____ （填“固体”或“液体”）培养基上进行选择培养，选择培养的目的是____ ．

（3）用刚果红染色法对分离出的微生物进行筛选，刚果红可以与纤维素形成____ ，当纤维素被纤维素酶分解后，培养基中会出现以纤维素分解菌为中心的____ ．从培养基的用途上分类，刚果红培养基属于____ 培养基．

张先生一家三口人，张先生是民营企业家，收入水平很高。妻子是某大型企业的主管，女儿是一家大公司的技术顾问，收入也很高。他们一家在一著名小区购买复式住房两套(一次性付款)。在节假日，一家三口常雇佣一辆舒适的旅游车在导游的引导下观光旅游。家中一切杂务由保姆处理。

请结合本课所学知识，分析张先生一家的消费状况。

①子非鱼，安知鱼之乐

②不论一时而论久远，不论一身而论天下

③仁义礼智，非由外铄我也，我固有之也

④身修而后齐家，家齐而后国治，国治而后天下平