题目

（1）图是2008年10的月历卡，用形如的长方形去框月历卡里的日期数，每次同时框出3个数，框出的3个数的和最大是，最小是，一共可以框出种不同的和．（2）请你用框出和是87的3个数． 答案：【答案】（1）90， 6， 21（2）【解析】（1）29+30+31＝901+2+3＝62+5+5+5+4＝21（种）答：框出的3个数和最大的是90，最小是6，一共可以框出21种不同的和．（2）87÷3＝29，中间的数是29，前一个数是28，后一个数是30，所以：短文改错增加：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词。删除：把多余的词用斜线（\ ）划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1. 每处错误及其修改均仅限一词；2. 只允许修改10 处，多者（从第11 处起）不计分。      Last weekend, I traveled by the air for the first time in my life. I usual travel by train, which is both cheaper and safe. But to fly in the sky was something new to me. At the end, I felt a little nervous. But very soon I became exciting when I found me high up in the sky among the clouds. I also found that mountains, fields and river were interestingly small. I enjoy the frightening and comfortable journey very much. After all, it is more interesting take a plane than to take a train._______________________________________________________________________