氢化可的松注射液为100mg/20ml的乙醇-水等容混合液,使用时须稀释至500ml输液中,是为了避免
A. 溶解度发生改变,析出结品
B. 输液中的盐析使产生结品
C. 减轻氢化可的松注射时对人体的刺激
D. 增加氢化可的松的稳定性
E. 防止太快进入人体引起局部浓度高,毒性增加
According to psychologists, an emotion is aroused when a man or an animal views something as either bad or good, When a person feels like running away from something he thinks will hurt himself, we call this emotion fear. If the person wants to remove the danger by attacking it, we call the emotion anger. The emotions of joy and love are aroused when we think something that can help us. An emotion does not have to be created by something in the outside world. It can be created by a person’s thoughts.Everyone has emotions. Many psychologists believe that infants are born without emotions. They believe children learn emotions just as they learn to read and write. A growing child not only learns his emotions but also learns how to act in certain situations because of an emotion.Psychologists think that there are two types of emotions: positive and negative. Positive emotions include love, liking, joy, delight, and hope. They are aroused by something that appeals to a person. Negative emotions make a person unhappy or dissatisfied. They include anger, fear, despair, sadness, and disgust. In growing up, a person learns to cope with the negative emotions in order to be happy.Emotions may be weak or strong. Some strong emotions are so unpleasant that a person will try any means to escape from them. In order to feel happy, the person may choose unusual ways to avoid the emotion.Strong emotions can make it hard to think and to solve problems. They may prevent a person from learning or paying attention to what he is doing. For example, a student taking an examination may be so worried about failing that he cannot think properly. The worry drains valuable mental energy he needs for the examination. We learn from the passage that an emotion is created by something that().
A. one thinks bad or good
B. one feels in danger
C. one faces in the outside world
D. one tries to escape from real life