TTGWD 4-39

kaipiggy

Unearthed in China, fossils of feathered dinosaurs offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds.

1. offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds
   
2. offer evidence more dramatic than what has yet been discovered of the close evolutionary relationship between dinosaurs and birds
   
3. offer more dramatic evidence of the close evolutionary relationship than any yet discovered between dinosaurs and birds
   
4. have offered the most dramatic evidence of the close evolutionary relationship between dinosaurs and birds that have yet been discovered
   
5. have offered more dramatic evidence than any that has yet been discovered of the close evolutionary relationship between dinosaurs and birds
   
   答案是A。
   理解为何其余不对，可是为什么A正确呢？
   本人觉得evidence yet discovered of 很奇怪。
   请NN解释！！！
   

头被门夹了

yet在这里是副词 表示“至今”的意思
全句的意思是 化石提供了至今发现的有关relationship的证据里最dramatic的

wangsiwei

B－至今以来发现的evidence，说明要用最高级，而不是比较级。再说如果是比较级，than后面是不是也也要补出助动词，说明是主语的比较。
C－more是修饰dramatic还是evidence？比较歧义。
D－改变时态就不对。that成了修饰birds，改变句义了
E－改变时态。没见过any that连用的。

不知道说的对不对。

kaipiggy

谢谢楼上的，本人已经理解！