题目列表(包括答案和解析)
| 计算。 | |
2. ○ ○ ○ □ □ = ______________ 3. △ ○ □ □ □ = ______________ 4. △ △ △ △ □ ○ = ______________ |
It's a simple (简单的) sum (算术题). Can you work out which number is represented
(代表) by the letter O and which is represented by the letter K?
O = _____________ K = _____________
| 计算下列算式,选择正确的答案。 | ||
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