单项选择题

A．changed market demand
B．changed OPEC policy
C．security situation in Saudi Arabia
D．U.S. policy toward Saudi Arabia
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单项选择题
A．dropped by 6%B．dropped by 42 dollarsC．rose by 60%D．rose .by 42 dollars
A．dropped by 6%
B．dropped by 42 dollars
C．rose by 60%
D．rose .by 42 dollars
单项选择题
A．they like them as petsB．they like them although they don’t have them as petsC．they use them to frighten other peopleD．they are keen on snake meat
A．they like them as pets
B．they like them although they don’t have them as pets
C．they use them to frighten other people
D．they are keen on snake meat
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