Living Space
How much living space does a person need? What happens when his space needs are not met? Scientists are doing experiments on rats to try to determine the effects of overcrowded conditions on man. Recent studies have shown that the behavior of rats is greatly affected by space. If rats have enough living space, they eat well, sleep well and produce their young well. But if their living conditions become too crowded, their behavior and even their health change obviously. They can not sleep and eat well, and signs of fear and worry become clear. The more crowded they are, and more they tend to bite each other and even kill each other. Thus, for rats, populations and violence are directly related. Is this a natural law for human society as well? Is enough space not only satisfactory, but necessary for human survival? These are interesting questions.
体坛资讯:Fatherhood will make Woods even better says Parnevik
体坛资讯:China prepare for Asian Cup semi-final showdown: coach
国内英语资讯:Chinese spending on shopping, food hit record high during National Day holiday
体坛资讯:Henman tops Moya to advance at Wimbledon
体坛资讯:Richards to meet an example, Liu Xiang to set an example
体坛英语资讯:Brazil midfielder Lucas Lima warms to China move
体坛资讯:Bucks draft Yi Jianlian of China
体坛英语资讯:Alonso crashes out of Japanese GP
体坛资讯:Hammam confident of Qatar bid for 2011 Asian Cup
体坛资讯:Henry to arrive in Barcelona on Sunday
体坛资讯:Yao Ming keen on bearing flag for China at Beijing Olympics
国内英语资讯:Chinese economy is stable: central bank official
体坛英语资讯:China bows out with head held high
国内英语资讯:Indonesia to send delegation to Chinas Hangzhou to learn lake management
体坛资讯:Gay wins 100m in years fastest 9.84 sec
体坛英语资讯:Germany beats North Korea 3-0 to advance to semifinals
体坛资讯:Chinese badminton stars to attend Thailand Open GP gold
体坛英语资讯:Special athletes assured of a happy environment
体坛英语资讯:Chinas Zheng to miss World Cup qualifier
体坛英语资讯:Champion stunned but China unbeaten at Magdeburg World Cup
体坛英语资讯:China beat Bullets in the last of Basketball Series
体坛英语资讯:Olympic basketball hopes in jeopardy: Yao
体坛资讯:Yao Ming NBAs No. 1 center: Dime Magazine
体坛英语资讯:Respect, admiration abound in Shanghai
体坛资讯:Liu gets another shot at Robles in 110 hurdles
体坛资讯:Yi agent seeks trade but NBA Bucks want Chinese star
体坛英语资讯:Yi debuts for Bucks in win
体坛英语资讯:Yi starts new life in Milwaukee
体坛资讯:Riquelme double inspires Argentina to win over Peru
国内英语资讯:Spotlight: China stands as steadfast contributor to global climate campaign
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |