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1、第15练阅读七选五语法填空短文改错.阅读理解A体裁：记叙文话题：动物世界词数：330时间：7Tropical fish hobbyists will tell you their tanks are a source of relaxation，but recent research suggests the fish might disagree.Many American households contain a fish tank，whose average size is less than 10 gallons.Yet a study comparing the behavior o
2、f common freshwater fish found that those kept in such small tanks were more aggressive than those in larger ones and were more likely to fight.“If people kept dogs in these conditions，theyd be put in prison，” said the author，Ronald Oldfield.“In larger tanks，the fish were not in continuous eyesight
3、of each other.They were swimming around，checking everything out rather than beating each other，” he added.“Its something we should think about.”The study consisted of two experiments.In one，Dr.Oldfield tested the effects of overcrowding by keeping tank size constant (不变) while increasing the number
4、of fish.In the other，he tested environment by placing three fish in tanks of different sizes.He then recorded their behavior at least two hours after feeding，to eliminate (排除)competitive behaviors related to food.While aggression seemed to remain constant regardless of the number of fish in a tank，i
5、t dropped off considerably once the fish were placed in a 100gallon tank with several plants and rocks to form shelters.The findings confirmed what he found when observing Midas in the wild.“If you go out and observe these fish swimming in a river，” he said，“theyre not aggressive at all，really.” Thi
6、s conclusion is not news to Justin Muir，the owner of a fish tank business.“More volume of water is always better.It keeps the fish healthier，and the tank is more stable.”【语篇解读】本文叙述了热带鱼的生活习性。当它们的生活空间越小时，它们的侵略性就越强；反之，如果生活空间越大，侵略性越小。1We can conclude from the study that _Athe fish in small rivers are mo
7、re likely to fight than those in larger onesBif you keep fish in tanks of less than 10 gallons，youll be put into prisonCpeople havent paid enough attention to the feeling of fish in smaller tanksDthe fish in the wild are more aggressive than those kept in tanks答案C推理判断题。由第二段和第三段内容可知，人们大多把鱼养在小的鱼缸里，故选C
8、项。A项中讲的是河流，而全文讲的是鱼缸，故A项错误；由第三段第一句可知B项错误；由全文特别是最后一段可知D项错误。2How was the first experiment performed?ABy putting more and more fish in the same tank.BBy putting fish in tanks of different sizes.CBy putting some food to test the behavior of fish.DBy putting fish in a tank with plants and rocks.答案A细节理解题。由
9、第四段第二句可知答案。3The two experiments prove that _Afood competition results in the aggressive behavior of fishBfish become more aggressive as more fish are put into a tankCcrowding is the main cause of the aggressive behavior of fishDfish become less aggressive when placed in a 100gallon tank答案D推理判断题。由倒数第
10、二段最后一句可知，如果把鱼放在100加仑的鱼缸里，它们会停止攻击，故选D项。A项太片面；由倒数第二段最后一句可排除B、C两项。4The best title for this passage might be _AAnimals Right to Live at EaseBPicture of Relaxation Only If Youre Not InsideCHow to Keep Tropical Fish as PetsDHow to Deal with Fishs Aggressive Behavior答案B主旨大意题。由短文内容可知，作者主要告诉我们鱼缸的大小决定鱼生活得是否舒适
11、、侵略性的大小，故选B项。B体裁：说明文话题：青少年成长词数：300时间：7Teenagers who sit down to family meals are less likely to be depressed or take risks with drugs and alcohol，new research shows.A new study looking at the role of family meals in the health and wellbeing of young people is the first study on the issue in New Zeal
12、and.It uses data collected nationally from more than 9，000 secondary school pupils.It finds that those who eat with their families frequently are less likely to report suicidal (自杀的) thoughts，less likely to be smokers and less likely to indulge_in drinking，drugs and so on.It says social changes such
13、 as more television channels，more mothers working and cheap fast food have changed the status of the family meal.However，the good news for New Zealand is that onethird of young people reported sharing meals with their families seven or more times a week and an additional 40 percent shared meals thre
14、e to six times a week.Author Jennifer Utter，a senior lecturer at Auckland University，said sitting down for dinner created an opportunity for parents to check in with children and see how their day had been.Young people who ate with their parents reported better connectedness and better communication
15、.Family meals indicate strong，healthy relationships.The high proportion of families eating together was encouraging，she said.“A lot of families do seem to want to spend time together.Its a really positive finding.”Previously a household would have only one breadwinner and there would always be someone at home for children to talk to.Nowadays，it often took the income of two people to keep the family afloat(能维持下去) and it would be harder for parents to have dinner with their children.Chief families commissioner Carl Davidson said teens who ate meals with their families reported better heal
