下列条件不是所有细菌和真菌生存所必需的条件的是[ ]

A．适宜的温度

B．水分

C．氧气

D．营养物质

短文填词

There are various festivals which celebrate important times of a year. Of these festivals, some are held to honor the dead or to satisfy the __小题1:___(祖先).For example, in Mexico, when people celebrate the Day of the Dead, they eat cakes ___小题2:__ “bones” on them and offer food, flowers and gifts to the dead. In the USA, Columbus Day is in m___小题3:__ of the arrival of Christopher Columbus. Harvest and Thanksgiving festivals are held because their food is g___小题4:__ for the winter and the agricultural work is over. The most energetic and important festivals are the ones __小题5:__ look forward to the end of winter and to the coming of spring. At the Spring Festival in China, people d___小题6:___ up, eat, drink, give children lucky money and have great fun. Easter is a _____小题7:__(宗教) festival for Christians around the world. On Japan’s Cherry Blossom Festival, the country ,c___小题8:_ with cherry flowers, looks as t____小题9:__ it is under pink snow. Festivals make people get together, let us enjoy life, be proud of our ___小题10:_(习俗) and forget our work for a little while.