400-1816-180
本題由chris提供
The lack of complete historical records from the mid-to-late 1800’s
(A) have made some Black inventions difficult to trace to their originators
(B) have made for difficulties in tracing some inventions by Blacks to their originators
(C) have made it difficult to trace some inventions by Blacks 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
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答案：
D
考點(diǎn)：主謂
一致 表達(dá)習(xí)慣
分析：主語是the lack，謂語動(dòng)詞需用單數(shù)形式；習(xí)慣用法make it difficult to do sth.
考點(diǎn)：
A.主謂不一致；
B.主謂不一致；
C.主謂不一致；
D.正確；
E.不符合表達(dá)習(xí)慣； 
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