专八改错练习第三十篇：

Many students today display a disturbing willingness tochoose
academic institutions, fields of study and careers in the basis of__1__
earning potential. In an extensive 1989 survey of collegestudents
nationwide, 72 percent of students reported that their primary
objective to attending college was to make more money upongraduation. __2__
This state of mind came with the present generation. Studies show
that the majority of baby boomers attended college to develop
themselves, their critically thinking skills and their personal __3__
philosophies of life.
Nationaly, the number of students going into business-related fields
has sharply increased, and this rise has attributed primarily to __4__
the shift in educational and career priorities. At Duke, economy is __5__
now the most popular major, attracting nearly 15 percent of the under-
graduates, and history majors comprise only 5 percent of undergraduate __6__
population. Thirty years ago the situation was reversed, with economic
and business administration majors together consisting 8.7 percent of __7__
undergraduates and almost 12 percent of undergraduates declared __8__
themselves history majors. The number of English majors has also decreased,
from 9 percent in 1969 to 5.5 percent today.
Degrees in economics are marketed and likely to garner their holders __9__
of high salaries without the added effort of medical or law school. __10__
And given the objectives of current college students, such options
are attractive.

答案及解析(反白可见):
--on
词组on the basis of 中须用介词on而不是in。
(attending)--in/of
不要将objective和objective相混淆，object后需加介词to，但这里应用in或者of表示“上大学的目标是……”。
ally--critical
thinking在这里已变成名词，因此前面应该用形容词critical来修饰，表示“批判性思维”。
4.^attributed--been
attribute作动词时是及物动词，通常的搭配是 to attribute sth to sth，因此这里应使用被动语态，加上been。
y--economics
economy表示一个国家的“经济”，而economics才表示“经济学”，因此这里应使用economics。
--while/but
and表示顺接，而这里缺少的是一个表示对比的连词，因为历史系学生和经济系学生在人数上形成很大对比，所以应改and 为while或者but。
ting--comprising/constituting或者 consisting^--of
consist的意思是“包括，由……组成”，一般要与介词of连用，而comprise或者constitute则表示“组成……”，而且不需要与of连用。
ed--declaring
“almost 12 percent of undergraduates declared themselves history majors”和“economic andbusiness administration majors together consisting 8.7 percent of undergraduates"应是并列结构跟随介词with，所以这里应将declared变为declaring，与前面的分句保持形式上的一致。
ed--marketable
原句的意思是“经济学的文凭是有市场的，有销路的”，所以应该是marketable。
(high salaries)--/
garner后面不需加介词of，直接说garner sth即可。