题目内容
All of US have felt pain．We have cut ourselves．We have been burned．Or we have had headaches．Some of us suffer pain rarely pain rarely. ___________ (46) Pain can take complete control of our body and mind，making it impossible to move and even to think．Yet we need pain．Without it，we would not know．1f we have hurt ourselves．It is our body’s warning system. ___________ (47) Pain is the most common reason we go to a doctor It is the most common reason we take medicines．Until recently，however, most doctors knew of only a few drugs that stopped some pains ___________ (48)But new knowledge about the process of pain is helping them to control pain better． Scientists have learned that the sense of pain is made up of both chemical and electrical signals. ___________ (49)Scientists also have learned that the nervous system sends two different kinds of pain messages to the brain：one very fast，the other slow．The first message is the warning signal．It moves at a speed of 30 meters a second．In less than a second，the brain understands that part of the body is hurt and how badly it is injured． ___________ (50)It tells us not to use the injured part until it heals． 46（）
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Step Back in Time Do you know that we live a lot longer now than the people who were born before us One hundred years ago the average woman 1ived to be 45．But now，she Can live until at least 80． One of the main reasons for people living longer is that we know how to look after ourselves better．We know which foods are good for US and what we have to eat to make sure our bodies get all the healthy things they need．We know why we sometimes get ill and what to do to get better again．And we know how important it is to do lots of exercise to keep our hearts beating healthily． But in order that we don’t slip back into bad habits，let’s have a look at what life was like 100 years ago． Families had between 15 and 20 children，athough many babies didn’t live long．Children suffered from lots of diseases，especially rickets(佝偻病)and scurvy(坏血病)，which are both caused by bad diets．This is because many families were very poor and not able to feed their children well． Really poor families who lived in crowded cities like London and Manchester often slept standing up, bending over a piece of string，because there was no room for them to lie down． People didn’t have fridges until the 1920s．They kept fresh food cold by storing it on windowsills(窗台板)，blocks of ice，or even burying it in the garden． Some children had to start work at the age of seven or eight lo earn money for their parents．If you had lived 100 years ago，you might well be selling matchsticks(火柴杆)(a job done by many children)or working with your dad by now． An Englishman invented the fridge in the 1920s.（）
判断并改正：儿童在学习圆概念时，学会用圆规画圆，这属于智力技能。
简答题 学习准备都包含哪些内容，为什么要了解学生的学习准备？
English and English Community 1 There is no doubt that English is a useful language．The people who speak English today make up the largest speech community in the world with the exception of speakers of Chinese． 2 A speech community is similar to other kinds of communities．The people who make up the community share a common language．Often they live side by side, as they do in a neighborhood (街坊)，a village，or a city．More often they form a whole country．National boundaries，however，are not always the same as the boundaries of a speech community．A speech community is any group of people who speak the same language no matter where they happen to live． 3 We may say that anyone who speaks English belongs to the English speech community．For convenience(方便)，we may divide the speakers into two groups: one in which the speakers use English as their native language, the other in which the speakers 1earn English as a second language for the purpose of education，commerce，and so on． 4 Learning a second language extends one’s vision and expands the mind．The history and literature of a second language record the real and fictional(虚构的)lives of people and their culture；a knowledge of them adds to our ability to understand and to feel as they feel．Learning English as a second language provides another means of communication through which the window of the entire English speech community becomes a part of our heritage． Paragraph 2（）
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