A:1
B:2
C:4
D:3
在共有15人参加的“我爱祖国”演讲比赛中,参赛选手要想知道自己是否能进入前8名,除了知道自己的成绩以外,还需要知道全部成绩的 ( )
除去铜粉中混有的少量氧化铜,其主要操作过程是( )
下面各题,怎样算简便就怎样算
1114 × 2833 × 78 =____
56 × 65 ﹣ 910 ÷ 95 =____
45 × 56 ÷ 58 =____
4﹣ 511 ﹣ 611 =____
30×( 56 + 45 )=____
(99+ 910 )÷9=____
根据短文内容填空。
Jane White is an American girl. She is fifteen. She is a middle school student. Her father is Bill White and her mother is Joan White. Her brother, Bob, is a student, too. He is in a black coat and Jane is in a red sweater.