我国发现的首例甲型H₁N₁流感确诊病例在成都某医院隔离观察，要掌握他在一周内的体温是否稳定，则医生需了解这位病人7天体温的           （    ）

一个等腰三角形的两边长为4cm、9cm，则这个三角形的周长为 ____cm．

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

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。

    Last Saturday afternoon, a charity sale held on our school playground. Although it was no easy task, students active participated in it.

    To organize it successfully, we' made full preparations. After the sale, from the students we collected variously second-hand goods which were still in good condition and classify them. Then came the big day. With all the teachers and students involve, the activity turned out to be successful. We raised 5,000 yuan for total at the end of the activity. All the money we raised up will go to the students from poor family to help finish their studies. It's so a meaningful activity that students look forward to the next charity sale.