A When I was twelve years old，my family were the first black people to move into an all white part of Grand Rapids，Michigan．Many ofour new neighbors weren’t very welcoming．The children sometimes threw stones at me or drove me home from school． Most ofmy teachers simply took no notice of me，but not Dorothy Bean，my history teacher Mi Bean was angry athowbadly I was being treated，but she didn’t say this to me．Mi Bean showed her re ect(尊重)for me by teaching me just like anyone else．I tead ofbeing u oticed,I was gaven a chance to show that I was clever．．Mi Bean was the first teacher who ever made me think for myself．She always wanted to know what I thought about difficult questio ．She expected me to have my own idea．Mi Bean was teaching me that thinking for oneself was the real key to education． One day,when I was not paying attention in cla ，Mi Bean suddenly threw an eraser at me．The eraser hit me right on the hand and sent my pencil flying．The whole cla were very surprised at first，then started laughing．This event became famous in the school and，because it ha ened to me．the students wanted to get to know me．So that’s the story of how Dorothy Bean made me her target(靶子)，and how I became just another kid in school． 44．Mi Bean was a teacher who was___________． A．active andwarm-hearted ．helpful but boring C．friendly and helpful． D．warm-hearted but carele 45．The underlined words“real key”mea _________ A．important way B．correct a wer C．free road D．open door 46．The event that ha ened between the writer and Mi ean__________． A．broke their relatio hi ．made the writer feel worse C．made the writer a succe fulmall D．made the writer famous in school B These days people more and more care for their weight．For example，as 70，000，000 mrica are perha on weight-reducing diets，and weight control has become a very large busine ．There are different kinds ofdiet foods in the markets such as soft drinks，diet cakes，diet salad dre ings(调料) ．Dieters also end much money on diet pills，exercise machines and so on．Each vear scores of new diets become popular all over America．They have such as the Miracle Diet，the Nine-Day Wonder Diet，and the Easy 24-Hour Diet．There is even one called the Ice Cream Diet，which advises the dieter to eat only ice creanl for lunch and di er!For dieter who ca ot lose weight on their own，there are many well-prepared diet grou ，which give them help and encouragement· 47．The control of weight has become a large busine because_________． A．a large number of America want to lose weight ．weight-reducing diets are not cheap C．more and more people care for their weight D．there are many different kinds of diet foods 48．The meaning of“Nine-Day Diet”is that_________ A．the dieteris sure to lose some weight only in 9 days by taking the diet B．the dieter must have food 9 times a day C．the dieter shouldn’t eat anything in 9 days D．the dieter needs 9 days 49．The writer________the diet foods can help one lose weight A．is sure that ．doe ’t believe that C．doe ’t under D．wants to let us understand C You ca ot go without a pencil when writing or drawing something，You have probably noticed letters H and B printed on your pencils．What，for example，do HB，2H or 3H mean? Those are letters showing the hardne of the lead(铅)or graphite(石墨)in a pencil．H refers to hard lead．The bigger the Arabic number before the letter H，the harder the lead，and the lighter will be the colour． The hardest pencil has 6H on it．Such pencils are often used in making engineering drawings．People seldom write with them．B stands for soft lead．The bigger the number before the letter B，the softer the lead，and the darker will be the colour,the softest being the 6B pencil．Such pencils are favoured by artists． The HB pencil has a lead core(中心部分)that is neither too soft nor too hard．Its colour is medium in its blackne ．It is most suitable for ordinary(平常的)writing and drawing． 50．The number that goes before the letter H shows_________． A．the model of the pencil B．the factory where the pencil is made C．how hard the pencil is D．how long the pencil lasts 51．A4B pencil is_______than a 3B one． A．harder B．softer C．better D．more expe ive 52．According to the pa age，an HB pencil is best for people like_________． A．student B．artist C．printers D．engineers 53．The best title for the pa age would be__________． A．Pencil ．Hard Pencils and Soft Pencils C．Letters H and B D．Symbols onYour Pencil