Nearlyfive million people see Grand Canyon (大峡谷) each year.

Nearlyfive million people see Grand Canyon (大峡谷) each year.
Most of
them see it from their cars at overlooks along the South Rim.The South Rim is
the easiest to reach in the park..
The
South Rim is open 24 hours a day,365days a year.Services are
provided and facilities (设施)are open year round..
A much
small number of people see the Canyon from the North Rim,which lies just 10
miles directly across the Canyon from the South Rim.The North Rim rises a
thousand feet higher than the South Rim,and is more difficult to reach .Heavy
snows close the road to the North Rim from October to mid-May of each year.
Even in good weather it’s harder to get to .
The
inner canyon includes everything below the rim and is seen mainly by campers,
mule(骡子)riders,or river runners.There are many opportunities here for
adventurous persons who want to camp,ride a mule to Phantom Ranch,or take a
river trip through the Canyon on the Colorado River
.
Visitor
services and facilities inside the national park on the North Rim are only open
from mid-May to late October .Weather permitting ,the North Rim is open for day
use only ,following the close of facilities in late October .During this time
there are neither services nor overnight facilities .
What do we learn from the passage about the South Rim
A.Itattracts over five million visitors each year.
B.Itis hard to get to even in good weather
C.Itis not open in winter months
D.Itis lower than the North Rim