图文匹配。图片与词组连连看。
① ____ A. doing kung fu
② ____ B. reading stories
③ ____ C. singing songs
④ ____ D. playing sports
计算:
(1)2x32;
(2)212+3113-513-2348;
(3)48-54÷2+3-31+13;
(4)(1+2)2(1+3)2(1﹣2)2(1﹣3)2.