Read the following paragraphs an

Read the following paragraphs and answer the question.

①There are two types of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy and the other becomes unhappy. This arises from the different ways in which they consider things, persons，events and the resulting effects upon their minds.
②People who are to be happy fix their attention on the convenience of things: the pleasant parts of conversation, the well-prepared dishes, the goodness of the wine and the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied. By their remarks, they sour (使变坏) the pleasure of society, offend(顶撞) many people, and make themselves disagreeable everywhere. If this turn of mind was founded in nature, such unhappy persons would be the more to be pitied. The intention of criticizing(批评) and being disliked is perhaps taken up by imitation(模仿). It grows into a habit, unknown to its possessors. The habit may be strong, but it may be cured when those who have realized its bad effects on their interests and tastes. I hope this little warning may be of service to them, and help them change this habit.
③Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck. Those people offend many others; nobody loves them, and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they aim at getting some advantages in social position or fortune, nobody wishes them success. Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections, no one will defend or excuse them, and many will join to criticize their wrongdoings. These people should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others. If they do not, it will be good for others to avoid any contact(接触) with them. Otherwise, it can be disagreeable and sometimes very inconvenient, especially when one becomes mixed up in their quarrels.

In this passage the writer mainly（）.

describes two types of people

laughs at the unhappy people

suggests the unhappy people should get rid of the habits of unhappiness

tells people how to be happy in life

文章大量篇幅描述了不开心的表现和坏处等，在结尾处呼吁不开心的人改变不开心的习惯。