阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项(A、B、C和D)中，选出最佳选项。
The most important festival in China is the Spring Festival, more commonly known in the west as Chinese New Year. 36 all Chinese festivals, the date of the new year is 37 by the lunar calendar 38 the Western calendar, so the date of the holiday 39 from late January to mid February.
The Spring Festival 40 the earth 41 back to life，and the starting of plowing and sowing. In the past, feudal rulers of dynasties placed great 42 on this occasion，and ceremonies to usher in the 43 were performed.
Preparations for the Spring Festival start 44 the last few days of the last month. Houses are 45
