4.What would be the best title for the text?

A.A Magical Place B.Living History

C.Learning History Well D.Historical Trips

　　(2018·浙江"七彩阳光"联盟检测)

　　Starting in the 4th century BC,merchants in the West exchanged silk for gold,horses or precious stones.Up to the frontiers of the Roman Empire,silk became a monetary standard for estimating the value of different products.Hellenistic Greece appreciated the high quality of Chinese silk and made efforts to plant mulberry trees(桑树) and breed silkworms.

　　According to a story by Procopius,it was not until 552 AD that the Byzantine emperor Justinian obtained the first silkworm eggs.He had sent two Nestorian monks to Central Asia,and they were able to smuggle(偷运) silkworm eggs by hiding the eggs in bamboos.The Byzantine church was thus able to make silk for the emperor,with the intention of developing a large silk industry in the Eastern Roman Empire,using techniques learned from the Sassanids(萨珊王朝).But the empire continued to import silk from other major urban centers.The magnificence(精湛) of the Byzantine techniques was not a result of the manufacturing process,but the meticulous(细心的) attention paid to the decorations.

　　The Arabs,with their widening land that had been conquered in war,spread sericulture(养蚕业) across the shores of the Mediterranean.Included in these were Africa,Spain and Sicily,all of which developed an important silk industry.The mutual interactions among Byzantine and Arabian silk-weaving centers of all levels of quality,with imitations made in Andalusia and Lucca,among other cities,had made the identification and date of rare surviving examples difficult to check.

　　While the Chinese lost their control over silk production,they were able to re-establish themselves as major silk supplier(during the Tang dynasty) and industrialize their production in a large scale(during the Song dynasty).China continued to export high-quality silk to Europe and the Near East along the Silk Road.

5.Para.1 intends to stress 　　　.

A.the spread of silk in the West

B.the high quality of Chinese silk

C.the popularity of silk in the West

D.the efforts of Greeks to produce silk

6.What was the notable feature of Byzantine silk products?

A.They were sold to other cities.

B.They had beautiful decorations.

C.They used high-quality materials.

D.They stressed manufacturing process.

7.We can conclude from Para.3 that the spread of Arabs' land 　　　.

A.stopped the spread of sericulture

B.protected the rare surviving Byzantine silk

C.had a negative effect on Byzantine silk industry

D.promoted the technological exchange on silk production

8.During the Tang dynasty,China mainly served as a 　　　.