单项选择题

William has cut his smoking( )to five cigarettes a day.

A．down
B．in
C．off
D．out
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单项选择题
According to the author, a child’s character can be most deeply influenced by( ).
A．what he does out of class
B．what he learns in books
C．his place in society
D．his lessons in school
单项选择题
What does the author tell us in this passage
A．How trees help prevent droughts and floods
B．The relationship between trees and man
C．How an empire fell to pieces in ancient times
D．A story of trees
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