1、What is black When it is Clean and White When it is dirty?
2、What will you get if you CUt the head Of a bear?
3、What number comes next? 1,2,4,7,11,16,()
4、A plane left Beijing to GUangzhou .The whole fight takes four hours.The plane left Beiji ng at 10 o'clock.Sha nghai lies in the middle of two CitieS.Now it is twelve o'clock.Where is the pla ne now?
5、If two CatS are in front of a Cat ,and two CatS are behind a cat,and One Cat is in the middle,now many CatS are there in all?
6、What Ietter is an in sect?
7、John runs faster than Bob but slower than Tom. Bill usually runs faster than Bob, SOmetimeS runs faster tha n Joh n, but n ever faster tha n Tom. Who is the fastest runner?
8、Helen is twenty years old, and her age is four times as much as Mary's. When Hele n's age is twice as much as Mary's, how old is Hele n the n?
9、MOther gave Alice 30 dollars. She SPends a fifth of the 30 dollars on books, a quarter of the rema in der at a hairdresser's and buys a new Skirt for 10 dollars. How many dollars does She have now?
10、What does everybody do at the Same time ?
11、Who works Onlyone day in a year but never gets fired ?
12、Why do IionS eat raw meat ?
13、How many SideS does a CirCIe have ?
14、What Can't talk but Can SPeak the truth ?
15、With WhiCh hand do you Write ?
16、How do you know policemen are Strong ?
17、From What number Can you take half and leave nothing?
18、What 5-letter word has 6 left When you take 2 IetterS away?
19、What is PronoUnCed Iike One Ietter,written With three Ietters,and belOngS to all ani mals?
20、What number gets bigger When you turn it UPSide down?
21、What PerSOn does every man take his hat Off to?
22、What Can you swallow than Can also swallow you?
23、WhiCh three IetterS Can frighten a thief away?
24、What appears OnCe in every minute,twice in every moment, but not once in thousa nd years?
25、What would you Say if you SaW a ghost（鬼）?
26、WhiCh is the left Side of a cake?
27、A police SaW a truck driver going the Wrong down a One - Way Street,but Paid no atte ntion to him.Why?
28、Where should the milk be best StOred ?
29、What always has One eye open but Can't see?
30、What belOngSonly to you and yet is USed more by OtherS than by yourself?
31、WhiCh Ietter of the alphabet SeParateS EUrOPe from AfriCa?
32、Why is a river rich?
33、I have CitieS but no houses,forests but no trees; rivers but WithOUt water;What am I?
34、A man jumped from a plane,but there WaS nothing Wrong With him.Do you know why?
35、Why did John Say he did n't know Where the SUn was?
36、Where does a PerSon Stay for the Iongest time in his life?
37、What is it,which will tomorrow and WaS be yesterday?
38、What has many teeth but never USeS them for eating?
39、The more you take away, the bigger I become. What am I?
