单项选择题

A ______ biologist studies the fish and other living things in the oceans.

A．merry
B．typical
C．professional
D．marine
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单项选择题
My grandfather Paul Goodman ______ to my endless of music.
A．helped
B．dedicated
C．committed
D．contributed
单项选择题
As a result the composers ended up taking home tapes of real performances rather than desperately struggling to ______ the notes.
A．get at
B．get over
C．get on
D．get through
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