Can you help me __________ my pet dog at the weekend?
A:look up
B:look at
C:look after
D:look for
郭嵩焘将去伦敦途中的见闻日记命名为( )
关于功、功率和机械效率,下列说法正确的是( )
—Della likes dancing, but doesn't like swimming.—____________.