21.English has become a communication _______ for people from different countries.
A.merit
B.stream
C.enjoyment
D.medium
22.During the eight years war, many people _______ their blood for their country.
A.shed
B.tempted
C.reserved
D.devoted
23.You have greatly _______us. What you have done is not what you told us about several weeks ago.
A.disappointed
B.deserted
C.clarified
D.opposed
24.Before you begin writing your paper, please write ------__________ first. Then we can have a better idea about what you are going to talk about.
A.an origin
B.a detail
C.an example
D.an outline
25.If you ask why I plan to study in the United States, the only answer is that it is a _______ for me .
A.chapter
B.ceremony
C.chamber
D challenge
26.A _______ political and economic situation is very important for the development of any country.
A.stain
B.stable
C.peaceful
D.pink
27.The financial support is decided not only according to your GRE score, but also according to your _______ in college.
A.performance
B.policy
C.smart
D.statement
28.The World Trade Center is often called a _______ Building, because it is made up of two identical buildings.
A. Alike
B.Folk
C.Twin
D.Former
29.It is impossible for us to _______ such a difficult task within the limited time.
A.fuel
B.frown
C.fulfill
D.frost
30.Please do not _______ when somebody else is talking.
A. intend
B.interpret
C.interupt
D.invest
答案:
21.D 22.A 23.A 24.D 25.D
26.B 27.A 28.C 29.C 30.C
（实习编辑：杨冰玉）
From:https://www.zgghmh.com/CET-4/20003608.asp