ChaseDream
搜索
返回列表 发新帖
查看: 1289|回复: 1
打印 上一主题 下一主题

pp3_1*256

[复制链接]
跳转到指定楼层
楼主
发表于 2010-1-6 11:37:27 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
求問A 的 it is known 有錯嗎? 為什麼不選呢? (正確C)
Scientists  have dated sharp-edged flakes of stone found in the fine-grained sediments of  a dry riverbed in the Afar region of Ethiopia to between 2.52 and 2.60  million years ago, pushing back by more than 150,000 years the earliest date when it is known that humans made stone  tools.
A. when  it is known that humans made
B. at  which it is known that humans had made
C. at  which humans are known to have made
D. that  humans are known to be making
E. of humans who were known to make
收藏收藏 收藏收藏
沙发
发表于 2010-1-6 12:01:04 | 只看该作者
A中的it指代很模糊,而且when it is known的表达很繁琐,C用宾语从句表达比A更简洁
您需要登录后才可以回帖 登录 | 立即注册

Mark一下! 看一下! 顶楼主! 感谢分享! 快速回复:

手机版|ChaseDream|GMT+8, 2025-6-11 19:27
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号

ChaseDream 论坛

© 2003-2025 ChaseDream.com. All Rights Reserved.

返回顶部