求助三道SC

Kilroy

1 The lack of complete historical records from the mid-to-late 1800’s (hv made some Black inventions difficult to trace to their originators.)
D) has made it difficult to trace some inventions to their Black originators
E) has made it difficult in tracing some Black inventions to their originators.
选D是不是就因为difficult后跟to? 但这里Black的位置变了，会不会改变原意。

2 Byron possessed powers of observation that would hv made him a great anthropologist and that (makes his letter as a group the rival of) the best novels of the time.
A) makes his letters as a group the rival of
B) makes his letters as a group one to rival
C) makes his letters as a group rivaling
D) makes his letters as a group the rival of
E) makes his letters a group which is the rival of
选D  为什么？其他的错在哪里？

3 The Forbidden City in Beijing, from which the emperors ruled by heavenly mandate, was a site (which a commoner or foreigner could not enter without any permission) on pain of death.
A) ..........
B) which a commoner or foreigner could enter without any permission only
C) which no commoner or foreigner could enter without permission
D) which, without permission, neither commoner or foreigner could only enter
E) which, to enter without permission, neither commoner or foreigner could do
answer: C     在这道题中，which直接修饰宾语，好象在别的题中都不允许的
而且我觉得C的意思要比原来加强了许多，为什么不选A？

princess

1.固定用法  it is difficult to do sth./ make it difficult for sb. to do sth.
2.固定用法 make sth. sth.else
makes (his letters as a group) (the rival of...)
3.A的这种表示不符合习惯吧，没有C来得简洁

Kilroy

但是3 里面的C意思明显要比A增强了

tongxun

1、除princess讲的外，还有：
  1）some Black inventions difficult to trace 其中的Black inventions 怎能执行动作trace？
  2）主谓一直的问题。（这个大家都看到了，罗嗦一下）
2、让princess都说完了。
3、我觉得是与后面的：否则，必死。对应语气。
  也不能说A 错，但他没正确的好。
  你是不是少打了一个逗号？

Kilroy

3 我的补充材料144题上没有逗号。
另，我看不出“否则”在哪里转？

tongxun

在on pain of death这里。

zyh79

3。lzm，指出这是关于which 用法的一个特例，即可用which引导限制性定语从句。
   咳，真拿这些原则没办法，不过5个都用which，也就无所谓了。
   a.表达中的without any permission 无 c.中的without permission简洁。