单项选择题

______ the passage of light, many new plastics are processed using technologies rivaling those used in the manufacture of computer chips.

A．For the better of
B．Permitting better
C．To better permit
D．It is better for
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Recognizing the shortage of time available to spend with their children, working mothers sometimes take ______ in the concept of quality time .
A．refuge
B．pride
C．place
D．action
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The loyalty of dogs to their masters has earned ______ man's best friend.
A．the nickname of
B．them the nickname
C．a nickname
D．nicknames
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