GWD两题，求指教，攒RP谢谢

Q20: TTGWD4-Q30:

Under high pressure and intense heat, graphite, the most stable form of pure carbon, changes into the substance commonly referred to as diamond and remaining this way whether or not the heat and pressure are removed.



A.remaining this way whether or not

B.remaining like that even as

C.remaining as such whether or not

D.remains in this way although

E.remains thus even when
答案是E,请问这里的 "thus even"的结构怎么理解呢？ 另外，我选的D,解析中说这里although的用法不对？为什么不对呢？

Q27: TTGWD4-Q39.

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



A.offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds

B.offer evidence more dramatic than what has yet been discovered of the close evolutionary relationship between dinosaurs and birds

C.offer more dramatic evidence of the close evolutionary relationship than any yet discovered between dinosaurs and birds

D.have offered the most dramatic evidence of the close evolutionary relationship between dinosaurs and birds

E.have offered more dramatic evidence than any that has yet been discovered of the close evolutionary relationship between dinosaurs and birds

这题选A,我选的D.  A里面的yet discovered不是把evidence和of分离了吗？难道of不应该紧接着evidence来修饰是什么证据吗？A怎么理解呢，谢谢！！
Q27: TTGWD4-Q39.

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


A.offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds

B.offer evidence more dramatic than what has yet been discovered of the close evolutionary relationship between dinosaurs and birds

C.offer more dramatic evidence of the close evolutionary relationship than any yet discovered between dinosaurs and birds

D.have offered the most dramatic evidence of the close evolutionary relationship between dinosaurs and birds

E.have offered more dramatic evidence than any that has yet been discovered of the close evolutionary relationship between dinosaurs and birds

这题选A,我选的D.  A里面的yet discovered不是把evidence和of分离了吗？难道of不应该紧接着evidence来修饰是什么证据吗？A怎么理解呢，谢谢！！