一、填空题(共12小题,每小题3分,共36分) r.若。与一2、万互为相反数,则a_。 2.如果n个队参加篮球比赛,每队有10人,那么参加比赛的队员共有_人。 3.一元二次方程犷一5=0的根为_。 4.某天同时同地,甲同学测得lm的测杆在地面上的影长为0.6m,乙同学测得国旗旗杆在地面上的影长为7. First, fill in the blanks (a total of 12 questions, each question 3 points, a total of 36 points) r. In contrast to one or two thousand, it is a_. 2. If n teams participate in the basketball game, there are 10 players in each team, then there are _people in the team. 3. The root of the one-dimensional quadratic equation 犷 5 5 = 0 is _. 4. At the same time and at the same place on the same day, A classmate measured lm’s pole length on the ground was 0.6m, and B students measured the length of the flag pole on the ground was 7.