9．About 4，000 years ago，the Chinese discovered the secret of the cocoon （繭）．No one knows how this discovery was made．One story says that a young princess was drinking tea in her garden when a cocoon suddenly dropped into her tea and the hot tea made it soft．When the princess tried to take it out，it became separated （分離的） and she pulled out a silk line．
The Chinese learned to make cloth with silk．For about 2，000years they were the only people who knew how to make silk．The Chinese businessmen sold silk cloth throughout Asia and Europe．Silk was very expensive．Everyone wanted to learn how to make silk，but the Chinese kept the secret．
Finally the secret was known．In the sixth century，two foreigners learned about the cocoons．They spent several years in China and finally found a way．The two men always carried bamboo sticks．One day they hid some eggs in the sticks，and walked out of China．It is said that the development of the silk industry in other countries came from those few eggs which the men had carried out of China．
26．When the Chinese learned how to make cloth with silk about 2，000years ago，C．
A．the secret of silk had been let out
B．silkworms were taken out of China
C．no country else could do it
D．they told others how to do it
27．The two foreigners took silkworms out of ChinaD．
A．a(chǎn)fter they were allowed to
B．in the form of silk lines
C．a(chǎn)fter they stayed in China for a few days
D．by putting them in the sticks they always carried
28．The purpose in writing this text isA．
A．to let people know something about silk
B．to encourage people to keep everything secret
C．to teach people how to make silk
D．to let people know why the foreigners wanted to know the secret．
分析 本文介紹了蠶是在4000多年前，中國偶然發(fā)現(xiàn)蠶的秘密，中國人生產(chǎn)出了絲綢，外國人想方設法的把蠶卵偷了出去．
解答 26．C 細節(jié)理解題，根據(jù)第一句About 4，000 years ago，the Chinese discovered the secret of the cocoon （繭）．No one knows how this discovery was made可知約4000多年前，中國發(fā)現(xiàn)蠶的秘密，那時世界上其他地區(qū)還不知道這個秘密，故選C．
27．D 細節(jié)理解題，根據(jù)最后一段的The two men always carried bamboo sticks．One day they hid some eggs in the sticks，and walked out of China可知兩個外國人把蠶藏在竹杖里帶了出去，故選D．
28．A 理解推斷題．根據(jù)文章內(nèi)容可知本文介紹的就是蠶和絲綢，作者的目的就是讓人們了解絲綢，故選A．
點評 做題時要在理解好文意的基礎上，與題目有機的結合，從文章中找到相關細節(jié)性的句子與
選項細細比對，進行選擇或推理判斷，選出符合文章內(nèi)容的正確選項．做題注意靈活，有時可采用排除法或直選法
確定出最終答案．
