语法与词汇 9.Marco Polo is said to have sailed on______Pacific Ocean on his way to Java in______thirteenth century.

【正确答案】 D

【答案解析】考查冠词。第一空指独一无二的事物用the；第二空为固定短语，表示在什么世纪，需加定冠词。故答案为D。