请问:2003-10-34,36

34,我选的是B,it should correct across to "to "right ?,but the answer is C,why?thanks !

36,I do not know which is wrong,why the answer is C?

最好将原题贴出来！

34.European settlers in North America moved from the Atlantic coast across 3,000 miles forests, grasslands, deserts, and mountains until they reached the Pacific Ocean.

答案： miles forests: miles of forests

解析： 名词之间的连接用of 表示修饰从属关系

参考译文：北美的欧洲定居者从大西洋迁移了3000英里， 经过森林， 草地， 沙漠和山脉， 终于来到了太平洋。

36.In this world of high technology, it is easy to forget that the most important tools ever developed for learning is still the book.

答案： tools: tool

解析： 谓语是is,  主语要用单数tool

参考译文： 在当今的高科技社会中， 人们常常忘记古往今来最重要的学习工具仍然是书本。

谢谢。