31.How can you make 6 out of three 7's?

　　32.How can you make 6 out of three 5's?

　　33.how can you make 1000 out of eight 8's?

　　34.Can you name the captital of every state in the U.S. in ten seconds?

　　35.A police officer had a brother ,but the brother had no brother.How could that be?

　　36.Why does a cat look first to one side and then to the other side when it enters a room?

　　37.How do you know policemen are strong ?

　　38.With which hand do you write?

　　39.What must you do before you return a book to the library?

　　40.Who is closer to you, your mom or your dad?

　　答案：

　　31.easy . 7- 7/7=6!

　　32. easy. 5+5/5=6!

　　33. easy. 8+8+8+8+88+888=1000!

　　34.Washinton,D.C.!

　　35. The police officer was a lady!

　　36.ause it can't see both sides at once.

　　37.ause they can hold up traffic with just one hand!

　　38. Neither.I use a pen!

　　39.Borrow the book from library.

　　40.Mom is closer, because dad is farther