GWD 題目

treewing929

Leaching, the recovery of copper from the drainage water of mines, as a method of the extraction of minerals, it was well established as early as the eighteenth century, but until about 25 years ago miners did not realize that bacteria take an active part in the process.

A.as a method of the extraction of minerals, it was well established

B.as a method of the extraction of minerals well established

C.was a well-established method of mineral extraction

D.was a well-established method of extracting mineral that was

E.had been a method of mineral extraction, well established

請問答案是 c 嗎?
E 時態有沒有錯? 18 CENTURY 是不是比 25年前早??

謝!!謝!!

treewing929

In Hungary, as in much of Eastern Europe, an overwhelming proportion of women work, many of which are in middle management and light industry.
A.    as in much of Eastern Europe, an overwhelming proportion of women work, many of which are in
B.    as with much of Eastern Europe, an overwhelming proportion of women works, many in
C.    as in much of Eastern Europe, an overwhelming proportion of women work, many of them in
D.    like much of Eastern Europe, an overwhelming proportion of women works, and many are
E.    like much of Eastern Europe, an overwhelming proportion of women work, many are in

答案是 c.
我有點不明白. 請問主語是不是 an overwhelming porportion of women? 謂語是 work?