单选题 Reading ComprehensionQuestions 6-10 are based on the following passage.The "Silk Road of the Sea"(or the Maritime Silk Road) refers to the important sea routes linking China to the rest of the world. The name was coined by a Japanese scholar in 1968 to distinguish it from the traditional Silk Road. There were two major routes -the East China Sea Silk Route and the South China Sea Silk Route.Guangzhou represented the starting point of the South China Sea Silk Route in the Tang Dynasty, which extended across the Indian Ocean and then to countries around the Persian Gulf. The exported goods consisted mainly of silk, china and tea, while imported merchandise included a variety of spices, flowers and ivories. The route was first used in the Qin and Han dynasties, and increased in popularity from the Three Kingdoms Period to the Sui Dynasty. Up until the An-Shi Rebellion in the Tang Dynasty this route was viewed as a secondary alternative to the Silk Road. However, in the latter half of the 8th century, owing to the wars in theWestern Regions, trade volumes along the Maritime Silk Road boomed as those on its overland counterpart steadily declined.Technological advances in shipbuilding ånd navigation led to the opening of new sea-lanes to Southeast Asia, Malacca, and areas in the Indian Ocean and the Persian Gulf. Guangzhou became a great harbor in China around the time of the Tang and Song dynasties, although it was later replaced by Quanzhou in the late Song Dynasty as the most important trade port.Zheng He's expeditions in the early Ming Dynasty demonstrated the great importance of the Maritime Silk Road and was to represent its peak of popularity. Later governments of the Ming and Qing dynasties issued bans on maritime trade, contributing to the massive decline in its use. After the Opium War broke out in 1840, the Maritime Silk Road ceased to function as a major global trade route.In 2013, China proposed the construction of the 21st Century Maritime Silk Road, which, together with the Silk Road Economic Belt, forms the core of the Belt and Road Initiative, aiming to enhance trade, cultural exchange, and infrastructure connectivity across the globe小题:What was the consequence of the opening of new sea-lanes?( )