单项选择题

It's ten years since the scientist ______on his life's work of discovering the valuable chemical element.

A．made for
B．set out
C．took off
D．turned up
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单项选择题
Most kids will go through a______ of being faddy (追逐) about what they eat and drink.
A．cycle
B．time
C．process
D．phase
单项选择题
The fact that some style is called a fashion implies a social recognition that is temporary and will______ be replaced by a new style.
A．rarely
B．hardly
C．eventually
D．especially
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