单项选择题

As Edison grew ______, he never lost his interest in science.

A．elder
B．older
C．the elder
D．the oldest
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单项选择题
You can drive your own car ______ you have passed the driving test.
A．even if
B．as if
C．now that
D．so that
单项选择题
The report showed us very clearly how the plane got ______ and crashed in the end.
A．out of control
B．under control
C．into control
D．within control
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