[求助]02-09-8 02-09-15

2002-09-15

   Although the term "corrosion" applies mostly to metals and particularly to their

   A                                                               

reaction to oxygen, all material are subject to surface deterioration.

B                    C                         D

Key：C

可是我想问B中reaction不需为复数吗？

2002-09-8

      In the late 1930's and early 1940's, Jacob Lawrence created many paintings _____ the lives of famous African American activists.
A. portayed
B. portrayed them
C. that they portrayed
D. that portrayed

portray不应用被动吗，那若是这样不选Ａ吗，前省略which were？

有点不懂，谢谢大家的帮忙！！

楼主多虑了。

1。reaction--作化学反应，应该是不可数名词吧

2。portray可以作为painting/drawing的谓语，另外，如果被动，你认为portray可以接双宾语吗？就算能接，把painting描述成lives应该也不妥吧。。。

噢,明白了,谢谢斑竹GG