、对于任意两个实数对( a , b )和( c , d ),规定:当且仅当 a = c 且 b = d 时,( a , b )=( c , d ).定义运算“ ”:( a , b ) ( c , d )=( ac - bd , a d + bc ).若(1,2) ( p , q )=(5,0),则 p = , q = .
【简答题】看图短文填空(本题共10小题,每小题2分,共20分) 阅读下面的短文,并借助上下文和插图补充所缺信息。每个空只能填写一个意义相符、形式正确的单词。并将答案填写在答题卡相应题目的答题位置上。 I have a friend called Kate. She is 小题1: four-year-old girl. Her family comes from Canada. They all...