| A | 2425 |
| B | 2425.5 |
| C | 2426 |
| D | 2426.5 |
| A | 1748 |
| B | 17480 |
| C | 174.8 |
| D | 1749 |
| A | 0 |
| B | 1 |
| C | 2 |
| D | 3 |
计算 -116 −223 +445 −513 +116 −3.8 的结果是()
| A | -5 |
| B | -6 |
| C | -7 |
| D | -8 |
计算 1+12 +1+12 +13 +23 +1+23 +13 +14 +12 +34 +1+34 +12 +14 +…+120 +110 +320 +420 +…+1920 +1+1920 +…+120 的结果是( )
| A | 210 |
| B | 120 |
| C | 212 |
| D | 122 |