阅读理解
    Recently, an Internet game has become a new fashion among young office workers and students. People can “farm” on a piece of “land” and “grow”, “sell” or even “steal” “vegetables”, “flowers” and “fruits” on the Net. They can earn(挣) some e-money and buy more “seed”(种子), “pets” and even “houses”.
    Li You from Xi'an said people in the city get tired from work, they go to their own farms, take care of their crops(庄稼), and pull out weeds(杂草). It is glad to forget about the pressure in cities.
    Li Bu grew up in a small village, and then he went to a city, but now he misses the life in the village and “Happy Farms” makes the country dream possible in his office. He said every time he sees his crops, dogs, and grasses, he feels like he is in the village again. When he is working on his farm, he can feel the breath of nature, and get happiness from farming and harvesting(收获).
    Li Lei enjoys putting some “bugs”(虫) in my friends' garden and they've become closer because of the game. Having fun together is the most exciting thing about it.
    Li Hong said it was just a waste of time. Teenagers spend so many hours on it and they can't focus on their study.

解方程。 

2013年是全面贯彻落实十八大精神的开局之年，是实施“十二五”规划承前启后的关键一年，是为全面建成小康社会奠定坚实基础的重要一年。从政治生活角度看，做好明年的经济工作要求政府：
①坚持民主集中制的原则       ②坚持对人民负责的原则
③要做到依法行政             ④要做到依法执政

平面镜、凹面镜、凸面镜、凸透镜和凹透镜是五种常见的光学器件，其中利用光的反射定律的是____ ；利用光的折射定律的是____ ；能会聚阳光的是____ ．

2014年5月5日新华网讯：今年1月，环境保护部“12369”环保举报热线受理群众举报66件，其中存在环境违法问题的有52件，占受理总数的79%。
看了上述新闻，小明认为：经济建设是我国当前的中心工作，为发展经济，牺牲点生态环境，在所难免，无可厚非。

请你运用所学知识，对小明的观点简要辨析。