西汉时开通了从长安出发、横穿亚欧的著名陆上通道，被称为“____”；明朝时____下西洋促进了中国和亚非各国的交流，是世界航海史上的壮举。

惯性有利有弊，以下做法属于利用惯性“有利”一面的是（　　）

在战国后期的秦国，一个农民如果想免除劳役和免受惩罚，最好的办法应该是(    )

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    I have a good friend. 1 Chinese name is Da Shan and his 2 name is Mark Rowswell. He 3 from Canada. He can 4 English and French (法语). And he speaks Chinese very 5. He likes China very much. Now he teaches English 6 Beijing. Da Shan 7 a big nose, big eyes 8 short brown hair. He has a happy family. His wife (妻子) is from Sichuan, China. They 9 two children. Da Shan's father and mother are in Canada. But 10 like China, too. And they often come to

China.