A．It has something to do with effectiveness．
B．It is especially popular with businessmen．
C．It is a kind of problem for most people．
D．It will change a person's lifestyle．

A．They are able to make good use of it．
B．They take it for granted that there is plenty of time．
C．They do not have to be too busy all the time．
D．They should spend more time enjoying life．

A．It focuses on smaller targets．
B．It makes 60 movements．
C．The second hand does most work．
D．The hour hand moves most slowly．