It is difficult for us to explain phenomena that we have little or __________direct knowledge.

A.on

B.with

C.to

D.for

A.was

B.were

C.is

D.are

A.refresh

B.renew

C.Stimulate

D.encourage

A.pulled

B.pulled down

C.pulled on

D.pulled out

A.economic

B.economical

C.economy

D.economize

A.for

B.to

C.with

D.and

A.Since

B.until

C.Before

D.after

A.in

B.for

C.on

D.against

A.traditional universities do a good job serving the society

B.universities must meet the needs of the society

C.research and teaching are of great importance inuniversities

D.universities play an important role in our society

A.universities in the UK have produced too much good forgraduates

B.such abstract subjects as philosophy is no longer useful

C.education should serve the social needs

D.it is advisable for today’s philosophers to know computerscience