我国古代的灿烂文明直到今天都令人赞叹不已。读一读下面的短文，你能将所缺的空补上吗？

　　About 4,000 years ago, the Chinese discovered the secret of the cocoon(茧)．No one knows how or when this important discovery was made．One story 　　1　　 that a young princess was drinking tea in her garden and watching the silkworm(蚕)　　2　　 cocoons．Suddenly one dropped into the tea and her hot liquid softened(使软化)it．When the girl tried to take the cocoon out of her tea, 　　3　　 became separated, and she pulled out a long silk thread．

　　The Chinese learned to weave(编织)the thread into cloth．For 2,000 years they were the only people who knew 　　4　　 silk．Later, silk cloth was brought to other parts of Asia and Europe．It was called the“Cloth of Kings”．

　　Everyone wanted to learn how to make silk, but they kept the secret carefully 　　5　　．

　　Finally the secret was stolen．　　6　　 the sixth century, two monks(和尚) learned about the silkworms and their cocoons．They spent several years in China and found a way to take some silkworm eggs out of the 　　7　　．One day they 　　8　　 some eggs in the canes(手杖)and 　　9　　 out of China with them．It is said that the development of the silk industry in other countries came from those few eggs 　　10　　 the monks had carried out of China．

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