任何一门理论科学中的每一个新发现--它的实际应用也许还根本无法预见--都使马克思感到喜悦，但是当有了立即会对工业、对一般历史发展产生革命影响的发现的时候，他的喜悦就非同寻常了。 最能准确复述这段话意思的是()。
A．马克思对与实践紧密相关并能对它产生重大影响的科学发现兴趣浓厚
B．马克思高度重视理论学科中的每一个新发现，因而对任何一个新发现都感到由衷喜悦
C．马克思十分重视他的发现对工业以及一般历史发展产生的革命影响
D．马克思有着非凡的预见性，因而对理论科学中的新发现都特别敏感
参考答案：A
解析：【解析】从文中可以看出，马克思对任何一门理论科学中的每一个新发现都感到喜悦，而当这个发现对工业对一般历史发展产生革命影响时，"他的喜悦就非同寻常了"。故选A。
Anger is good for you, as long as you control it, according to new psychology research. A new study from Carnegie Mellon University shows anger may help people reduce the negative impacts of stress and help you become healthier. “Here getting emotional is not bad for you if you look at the case of anger,” said Jennifer Lerner of Carnegie Mellon. “The more people display anger, the lower their stress responses.” Lerner studied 92 UCLA students by asking them to count back from 6,200. They must say out loud every thirteenth number. Researchers disturbed them by asking them to count faster or ask them other questions. If they made any mistakes, they had to restart from the very beginning. Many students felt depressed about making so many mistakes or got angry. Lerner used a hidden video camera and recorded all their facial expressions during the test. The researchers describe their reactions as fear, anger and disgust. Other researchers recorded the students’ blood pressure, pulse and production of a high-stress hormone（荷尔蒙）called cortisol. People whose faces showed more fear during the experiment had higher blood pressure and higher levels of the hormone. Both can have lasting effects such as diabetes（糖尿病）, heart disease, depression and extra weight gain. When people feel fear, negative impacts increase, but when they get angry, those negatives go down, according to the study. “Having that sense of anger leads people to actually feel some power in what otherwise is a maddening（令人发狂的）situation,” Lerner said. Lerner previously studied Americans’ emotional response to the 9/11 terrorist attacks two months after the incident. She found people who reacted with anger were more optimistic. These people are healthier compared with those who were frightened during the event. So in maddening situations, anger is not a bad thing to have. It’s a healthier response than fear. 小题1: What is the story mainly about?
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