Paragraph ②:( )

• A、The end of riders' business

• B、The fastest message service

• C、The comfortable home station

• D、The effective system to send mail

• E、Safe delivery despite the tough ride

• F、Need of message exchange in the gold rush

A.get	E. medicine	I. only
B. called	F. over	J. use
C. similar	G. average	K. usually
D.think	H. valuable	L. development

There were adequate stations to ( )

• A、only ten days

• B、for a better life

• C、a couple of months

• D、be young and brave

• E、switch horses and riders

• F、after the outbreak of the Civil War