单项选择题

Under its Charter, the U.N. guarantees (保证)______.

A．never to use arms
B．to employ international machines
C．better standards of life
D．to promote economic and social advancement
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单项选择题
Within only one week, ______.
A．23 persons lost their lives
B．protestants took away seven lives
C．more than twice attacks happened to Belfast
D．most of the dead were Catholics
单项选择题
In fact trick or treat is______.
A．usually used by children to get sweets from others
B．a warning used by criminals to snatch something
C．a secret was used by protestant gunmen to kill somebody
D．an old saying, but not used now
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