题目

如图，一次函数y=mx与反比例函数y=的图象交于A、B两点，过点A作AM⊥x轴，垂足为M，连结BM,若=3，则k的值是         . 答案：3解析:略36、Basketball stars are usually tall．The stars of other sports are sometimes short．Some of the best football players are not very tall． Short people often have better balance than tall people, so they do not fall over（摔倒）very often．In some sports the players must have good balance, for example, table tennis and running． You do not need long legs to run fast! Some of the fastest runners in the world are not very tall．Some are tall and some are short．There is no medicine to make people grow taller or to make people shorter． The tallest woman in the world is Sandy Allen．She is 2．317 meters tall and lives in the United States． The shortest person in the world is Gul Mohammed from India．He is only 57 centimeters （厘米）tall． Today young people in many countries grow taller than their parents．This is because they eat better food today．Good food can help children grow． 根据短文内容，回答下列问题： 1．How many different sports do we talk about in this passage （段落）? What are they?   ____________________________________________________________． 2．Is there any medicine to make people grow taller or to make people shorter?   ____________________________________________________________． 根据短文内容，补全下列句子（每空填一个单词或数字）： 3．The tallest person in the world is ________ meters taller than the shortest one． 4．_______ _______ helps young people today grow taller than their parents． 5．将短文中划线的句子译成汉语：   ___________________________________________________________．