A:sacred
B:professional
C:precious
D:broad
下列物体质量最接近50g的是()
— It's Tuesday .
黑板并不是光源,但我们却可以从各个方向看到它,这是因为 ( )
直接写得数:
12 ﹣ 15 =____
6× 23 =____
2﹣ 45 =____
58 × 25 =____
14 + 13 =____
120 × 57 =____
87 × 716 =____
19 + 56 + 89 =____