单项选择题

A．It takes a longer time to melt.
B．It is lighter than ordinary ice.
C．It is cleaner to use than ordinary ice.
D．It is not so cold as ordinary ice.
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Where are swimming courses arranged for children
单项选择题
A．American people learn to be independent from childhood.B．American people tend to think independently.C．All the American young people have to move away from their families before 19.D．American society wants its young people to live independently.
A．American people learn to be independent from childhood.
B．American people tend to think independently.
C．All the American young people have to move away from their families before 19.
D．American society wants its young people to live independently.
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