8．origins famous system approached came across
disturbing novels puzzles nearby by chance
various throughout therefore surrounded before long
51．Festivals and celebrations of all kinds have been held everywhere since ancient times and they have manyorigins，some religious，some seasonal，and some for special people or events．
52．One evening when I sat down at the computer to do some research on great women of China，Icame acrossan article about a doctor called Lin Qiaozhi，a specialist in women's diseases．
53．At that time，hunger was adisturbingproblem in many parts of the countryside，and Dr Yuan Longping saw the great need for increasing the rice harvest．
54．Their balanced diets became such a success thatbefore longWang Peng became slimmer and Yong Hui put on more weight．
55．Mark Twain is best known for hisnovelsset in his boyhood world on the river，such as The Adventures of Tom Sawyer and The Adventures of Huckleberry Finn．
56．As time went by，Charlie Chaplin grew more and more popular as his charming character，the little tramp，became knownthroughoutthe world．
57．After I introduced them to each other，I was very surprised to see that TonyapproachedJulia，touched her shoulder and kissed her on the cheek．
58．How life began on earth is one of the biggestpuzzlesthat scientists found hard to solve．
59．People say that Vancouver is Canada's most beautiful city，surroundedby mountains and the Pacific Ocean．
60．Some theme parks arefamousfor having the biggest or longest roller coasters，others for showing the famous sights and sounds of a culture．
