话说美国福布斯杂志网站上出了10个脑筋急转弯brainteasers，据说可以测试大脑的机敏程度，其实用来测试是否“脑残”也是可以的（参考答案附后）：

第一题：Johnny的妈有三个孩子，老大叫April，老二叫May，老三叫什么？

第二题：没法翻译，请直接看英文：A clerk at a butcher shop stands five feet ten inches tall and wears size 13 sneakers. What does he weigh?

第三题：在珠穆朗玛峰被发现之前，世界最高峰是哪座山？

第四题：How much dirt is there in a hole that measures two feet by three feet by four feet?

第五题：英语中哪一个词永远被拼写incorrectly（What word in the English language is always spelled incorrectly）?

6. Billie生日是12月28日，可是他的生日总是在夏天，这是咋回事？

7. 在 British Columbia you cannot take a picture of a man with a wooden leg. Why not?

8. 赛跑中，你超过了第二名，你现在是第几名?

9. 以下两种说法哪一个正确： “The yolk of the egg is white” or “The yolk of the egg are white?”

10. A farmer has five haystacks in one field and four haystacks in another. How many haystacks would he have if he combined them all in one field?

参考答案：

1. Johnny.
2. Meat.
3. Mt. Everest. It just wasn’t discovered yet.
4. There is no dirt in a hole.
5. Incorrectly (except when it is spelled incorrecktly).
6. Billie lives in the southern hemisphere.
7. You can’t take a picture with a wooden leg. You need a camera (or iPad or cell phone) to take a picture.
8. You would be in 2nd place. You passed the person in second place, not first.
9. Neither. Egg yolks are yellow.
10. One. If he combines all his haystacks, they all become one big stack.

http://www.forbes.com/sites/work-in-progress/2012/05/15/10-brainteasers-to-test-your-mental-sharpness/