unity ----练习题.doc

Unity : The three paragraphs that follow all discuss the same topic. Only one of them shows unity. First read the paragraphs. Then answer these questions. 1. Which paragraph has unity? 2. Which paragraph does not have unity because it discusses two different topics? 3. Which paragraph does not have unity because it has sentences that are not related to the main topic? Paragraph 1 Effects of Color Colors create biological reactions in our bodies. These reactions, in turn,can change our behavior. In one study, prisoners were put in a pink room, and they underwent a drastic and measurable decrease in muscle strength and hostility within 2.7 seconds. In another study, athletes needing short bursts of energy were exposed to red light. Their muscle strength increased by 13.5 percent, and electrical activity in their arm muscles increased by 5.8 percent. Athletes needing more endurance for longer performances responded best when exposed to blue light. Other studies have shown that the color green is calming. Green was a sacred color to the Egyptians, representing the hope and joy of spring. It is also a sacred color to Moslems. Many mosques and religious temples throughout the world use green (the color of renewal and growth) and blue (the color of heaven) to balance heavenly peace with spiritual growth. To sum up, color influences us in many ways (Daniels 10). Paragraph 2 Effects of Color Colors create biological reactions in our bodies. These reactions, in turn,can change our behavior. In one study, prisoners were put in a pink room, and they underwent a drastic and measurable decrease in muscle strength and hostility within 2.7 seconds. In another study, athletes needing short bursts of energy were exposed to red light. Their muscle strength increased by 13.5 percent, and electrical activity in their arm muscles increased by 5.8 percent. Athletes needing more endurance for longer performances responded best when exposed to blue light. Other studies have shown that the c