It is stated in the passage that success can mostly be measured in terms of______.

A．delightful but time-consuming
B．not interesting but very rewarding
C．not worth doing and bearable at all
D．exceedingly dull and always painful

A．A Venture to Remedy Traffic Woes
B．A Quick-fix Solution for the Traffic Problems
C．Highways Get Smart—Part of the Package to Relieve Traffic Gridlock
D．Smart Highway Projects—The Ultimate Solution to Traffic Congestion