If you often feel tired and the doctor can't find anything wrong with you, you may be in a state of subhealth(亚健康). Subhealth is a state between health and illness. Most of the subhealthy people are middle-aged ones who are usually stressed out because of work and family. And some of them are students who are having exams.
    If you are subhealthy, it is not difficult for you to become well soon. You should have good living habits. For example, you should get up early and go to bed early. And you should exercise regularly（有规律地）. Exercising can keep you healthy. As for meals, it is better to eat less salt and sugar. Vegetables, fruit and fish are important to your body. You should eat more of them. It is not good to eat too much at one meal, because it may cause unhealthy changes in the digestive tract（消化道）. And at last, a balanced diet is very helpful in staying away from（远离）subhealth.

在东西方宗教中都有一个假设：在地球之外，①                  ，那里尽是金碧辉煌，尽是山珍海味，没有尘世的种种苦难或悲惨。这假设中的天堂，纯属子虚乌有。摆在人类面前的出路只有两条：或坚决控制地球上的人口，下决心保护地球生态环境；②                   。但这后一条出路几乎是不可能的。比如，月球上没有大气；比如，金星的表面温度很高。所以，除了地球，③                         。

解析：本题考查考生概括，准确、简明、连贯等综合语言运用能力。

本题的每个空白处均需要考虑上下文，尤其需要关注代词(例如“这”“那里”)与连词(例如“或”“但”“所以”)等，它们是决定如何衔接的关键所在。