水、煤气用铸铁管含硫量不应大于（）。A、0.10％B、0.20％C、0.30％D、0

Choose the best topic from A to F according to each paragraph
小题1:Christmas Day, the birthday of Jesus Christ, is the most important festival in Britain and some other countries. On Christmas Eve, people usually tell their children to put their stockings at the end of their beds before they go to sleep.
小题2: Apes(猿) can understand some things more quickly than we can. One or two of them have learned a few words. But they can’t join words to make sentences. They can’t think like us because they have no language.
小题3: The moon is our nearest neighbour in space. It is our satellite and men have visited it already. It is smaller than the earth. Plants can’t grow on the moon because there’s no air or water on it.
小题4:The largest animal ever to live on the earth is the blue shale(鲸). It weighs about 80 tons—more than 24 elephants. It is more than 30 meters long. A newborn baby whale weighs as much as a big elephant.
小题5: We can’t see it and we can’t catch it. But we can feel it pass by. It is always with us in our life. When we are at the table, it passes away while we are eating. Time is life, we must be masters of time.

A. What Is Time                      B. Man And Apes C. Having A Good Time                D. Our Festival E. The Moon                         F. The Blue Whale