2002-08-13,23 两道语法求助

02002-8

23、The economic heart (A)of Canada, Ontario accounts for (B) more than 40 percentage (C) of the nation's productive capacity(D).  

是不是前面是百分数，后面的CAPACITY就应该是复数？

13、The distinguishing feature of a fluid, in contrast to a solid, is the ease                  

A) that a deformed fluid

B) to deform a fluid

C) when a fluid that is deformed

D) with which a fluid may be deformed

B）错在哪里呢？