单项选择题

Rising energy costs increase operating costs ______ for many older air - conditioning systems in large buildings, causing owners to seek help.

A．heatedly
B．severely
C．fiercely
D．drastically
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单项选择题
After the completion of that bridge, the ______ company' s business has been shrinking.
A．navigation
B．carriage
C．marine
D．ferry
单项选择题
A good scientist ______ into all aspects of a problem in order to find solutions.
A．pricks
B．pokes
C．probes
D．peers
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