请教：大全Sec14 - 15

jediming

1.                             Since 1986 enrollments of African Americans, American Indians, and Hispanic Americans in fulltime engineering programs in the ffice:smarttags" />United States has steadily increased, while the number of other students who enter the field has fallen.fficeffice" />

(A) has steadily increased, while the number of other students who enter the field has fallen

(B) has steadily increased, while other students entering the field have declined in number

(C) increased steadily, while there was a decline in the number of other students entering the field

(D) have steadily increased, while the number of other students entering the field has fallen（D）

(E) have steadily increased, while that of other students who enter the field fell

答案是D。但是觉得这个number of 怎么和enrollments of 对不上号？另外，E为什么不可以。谢谢。

雪落无声

E时态不对，since用完成时态


若时态改正了，that 也和enrollment不对应，应该用those


Longman解释：enrollment


2
[countable] the number of people who have arranged to join a school, university, course etc
Student enrolments have more than doubled.


所以D中可以用the number of


for discussion

jediming

多谢，另外你那个问题188我感觉那个B也是时态问题


B应该是they orginally seemed


originally暗示时态是过去式。