英文IQ题及奥数题1.How can you let a bike run as fast as a train?2.W

英文IQ题及奥数题
1.How can you let a bike run as fast as a train?
2.When I take my clothes off,he gets dressed.When I put mu clothes on,he is undressed.What is he?
3.What wears a cap but has no head?
4.Mary has two nice picture books.Her father gives her another three.Then she gices one of them to her sister,How many picture books does she have now?
5.How can you make 1000 out of eight 8s?
6.What room has no walks, no doors ,no windows ,and no floors?
7.What is that, when once lost,you can never find again?
8.What two words have thousands of letters in them?