单项选择题

The United Nations Conference ______.

A．was not as intense as previous meetings
B．failed to recognize drug problems in many countries
C．was successful in developing a two-level action plan
D．showed governments' confidence in handling their own problems independently

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单项选择题Special words used in technical discussion ______.

A．never last long
B．should be confined to scientific fields
C．are considered artificial language speech
D．may become part of common speech

单项选择题The documents adopted ______.

A．proved to be a point of argument between the countries
B．were identical to one another
C．included an agreement between the nations involved to fight the drug problem
D．were not very specific or

单项选择题It is true that ______.

A．an educated person would be expected to know most technical terms.
B．everyone is interested in scientific findings
C．the average man often uses in his own vocabulary what was once technical language not meant for him
D．various professions and occupations oRen interchange their dialects and jargons

单项选择题The first and fourth paragraphs have all the following points in common EXCEPT ______.

A．the importance of experience in building attitudes
B．how attitudes can be changed in the classroom
C．how reading affects attitudes
D．reference to straight thinking and attitudes

单项选择题The author was, no doubt, ______.

A．a linguist
B．an essayist
C．a scientist
D．an attorney