[单项选择]Clothing made of plastic fibres has certain advantages over ______ made of natural fibres like cotton, wool, or silk.
A. one
B. the one
C. that
D. what

[单项选择]Clothing made of plastic fibres has certain advantages over ______ made of natural fibres like cotton, wool, or silk.
A. one
B. the one
C. that
D. what

[单项选择]Clothing made of plastic fibers has certain advantages over ______ made of natural fibers like cotton, wool, or silk.
A. one
B. the one
C. that
D. what

[单项选择]It is certain that the time has come when man travel in the outer place.
A. 人们能到外层空间旅行的时代已经到来，这是肯定的。
B. 当人们在外层空间旅行的时候，无疑时间已经到来。
C. 人们肯定能到外层空间旅行的时代已经来了。
D. 毫无疑问，人们能到宇宙太空旅行的时代已经到来。

[单项选择]It is certain that American English has ____________ influenced British English, especially in the last quarter of the century.
A. excessively
B. numerously
C. absolutely
D. considerably

[单项选择]Each species has certain（）features.
A. distinguish
B. distinguished
C. distinct
D. distinctive

[单项选择]The government has made great effort to
A. A．combine FBI and CI

[单项选择]Chomsky has made the distinction between linguistic competence and______.
A. linguistic performance
B. communicative competence
C. reading performance
D. universal grammar

[单项选择]Entertainment has been made available to everybody by the cinema, radio and television.
A. 影院、收音机和电视使人人都可以享受各种娱乐。
B. 影院、收音机和电视是每个人的主要娱乐方式。
C. 影院、收音机和电视使娱乐成为每个人的可能。
D. 影院、收音机和电视是每个人能够得到的娱乐。

[单项选择]Although diverse, African music has certain distinctive traits, one of which is the use of repetition as an organizing principle.
A. benefits
B. features
C. notions
D. options

[单项选择]Situational loneliness has made it possible for people ______.
A. to keep fit
B. to adjust to the new circumstances
C. to cause sleeplessness and headaches
D. to understand that their shyness can not be got hold of

[单项选择]The ever-increasing income has made studying overseas available to children from average families.
A. 收入不断增加，平均每个家庭都有小孩出国留学。
B. 不断增加的收入让普通家庭的孩子也能到海外学习。
C. 来自普通家庭的孩子可以利用不断增加的收入出国留学。
D. 收入的不断增加使得普通人家的孩子也能出国留学。

[单项选择]According to the passage, Crosby has made which of the following assumptions concerning historical means of demography
A. (A) Migration is in most cases dictated by life course events as opposed to the economic factors that contribute to the development of cities.
B. (B) Population growth tends not to affect the availability of proxies for replacing emigrants from population centers.
C. (C) Sedimentary populations are more historically significant than nomadic or migratory ones.
D. (D) It is permissible to rely upon a single source of information in studying population movement patterns.
E. (E) Migration can be disregarded as a demographic pattern in historical contexts prior to the development of large cities.

[单项选择]Good harvest this year has made it possible for us to supply walnuts ______ last year's prices.
A. at
B. in
C. against
D. on