题目

People are playing video games everywhere these days, whether they’re riding a bus or sitting in a restaurant.【1】But is this a heathy habit? The World Health Organization (WHO) doesn’t think so. In June, it thought “gaming disorder (障碍)” as a mental (心理的) disorder, CNN reported.“Gaming disorder” means always or often playing video games. 【2】 It has three main characteristics (特征).The first sign is when the player loses control over his or her gaming habits. The second is when playing games becomes more important than other activities for the player. 【3】Man生命在生物圈中的延续和发展，最基本的环节是生物通过    和    ．