【答案解析】道琼斯指数主要用于对纽约证券交易所的股票行情涨跌进行衡量与报道。 [解析]
The Dow-Jones Index is mainly used to measure and report changes in stock values on the New York Stock Exchange.

【答案解析】美国人认为没有一个人是一成不变的，不进则退。这种观念使得整个民族都致力于研究、实验和探索。 [解析]
Americans believe no one stands still; if you are not moving ahead, you are falling behind. This attitude results in a nation of people committed to researching, experimenting and exploring.

【答案解析】专家们认为，当父母们迁就孩子们的不合理的要求时，往往也就惯坏了孩子。 [解析]
Experts believe that overindulgence of a child often happens when parents are unable to stand up to their children"s unreasonable demands.

【答案解析】人类有史以来，迷信就是人们生活中的一部分。即使在如今的科技时代，大多数人哪怕表面上装作不迷信，也会在背地里迷信某些事物。 [解析]
Superstition have been part of life since the beginning of human history, and even in today"s science and technology, most of us are secretly superstitious about certain things, even though we may pretend not to be.

【答案解析】医生认为，如果不能有效控制怒火，发怒是非常有害的。他们警告说，愤怒、敌对的情绪可能导致心脏病、胃病、头痛、情绪问题，甚至癌症。 [解析]
Doctors say anger can be extremely damaging emotion, unless you learn how to deal with it. They warn that angry, hostile feelings can lead to heart disease, stomach problems, headaches, emotional problems and even cancer.