问题
填空题
听说你的数学不错，你能用英语计算下列各题吗？
例: (five) + (four) － (one) = (eight)
1. (three) + (four) － ( ) = (one)
2. (four) + (one) － ( ) = (three)
3. (six) + ( ) － (four) = (five)
4. ( ) + (five) － (three) = (seven)
5. (two) + (eight) － (one) = ( )
答案
1. six 2. two 3. three 4. five 5. nine