问题 单项选择题 案例分析题

左下图为某地水平地质剖面图。某日发生地震(丙地的地表为震中),根据甲、乙两地观测站的地震波记录,绘出了地震横波与纵波的走时曲线图(右下图),据此回答下列各题。

下列关于右上图的叙述,正确的是()

A.横坐标向右增大,则反映出烈度越来越大

B.①表示甲地的观测站,②表示乙地的观测站

C.a线表示纵波走时曲线图,b线表示横波走时曲线图

D.越接近震中的观测站,其纵波与横波抵达时间差距越小

答案

参考答案:D

解析:

横坐标向右增大,离震中越远,一般烈度越小;从图Ⅰ可以判断甲和乙离震中的距离,①、②两地分别表示乙和甲测站;a和b分别表示的是横波和纵波走时曲线,因为纵波速度快,到达监测站的时间短;越接近震中,时间越短,横波和纵波到达监测站的时间差值就越小。由此可以判断D项正确。

考点:该题考查岩石和地震波。

单项选择题

There 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.

People 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 the pleasure of society, offend(hurt) 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 and being disliked is perhaps taken up by imitation. It grows into a habit, unknown to its possessors. The habit may be p, but it may be cured when those who have it realize its bad effects on their interests and tastes. I hope this little warning may he of service to them, and help them change this habit.

Although 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 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 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 ().

A. describes two types of people

B. laughs at the unhappy people

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

D. tells people how to be happy in life

单项选择题