The father of an 8-year-old boy says his son is now the youngest person to climb the famous El Capitan in California.
   After four days of guided climbing，Joe Baker and his son Sam Baker reached the top of the cliff （懸崖）face inside Yosemite National Park last week. "We made it!" Joe Baker wrote on Facebook. "What an amazing week!I'm so proud of Sam.He completed the youngest rope ascent （登頂）of El Capitan！"
   Rock climbing has long been a favorite pastime for the Baker family.Though Sam's mother，Ann Baker，didn't join for the ascent，she is also a climber and a big supporter of her son's brave efforts.The family set up a website to record the details of Sam Baker's adventures and raise money to "make films that encourage parents to adventure big with their kids. "
   Sam Baker began training for the ascent at least 18 months ago and reached the top of Moonlight Buttress inside Zion National Park in Utah as a bit of a test run，according to his dad. "He did great on Moonlight Buttress!" Joe Baker said.
   They began the ascent of El Capitan on October 25 and reached the top on October 28.They made the journey with the help of two guides.The Bakers used a technique known as "jugging， " also known as a rope ascent，which includes using handheld equipment to slide （滑行） up a fixed rope that's been placed by a guide who's further up the rock.This way，the climber can move effortlessly up the rope without touching the rock face.The ascent takes many days，which means supplying （提供）the group with food，water and other heavy equipment.
   "It's just a great place， " Joe Baker tells the journalist. "It's kind of like the mecca （圣地）of rock climbing.It's such a big adventure and also an opportunity. "

（1）What can we learn about Sam Baker？

A

A

A．He grew up in a climbing family.
B．He climbed El Capitan with his mother.
C．He made films to raise money for his climbs.
D．He set a new record on Moonlight Buttress.
（2）What does the technique "jugging"include？

D

D

A．A guide walks on fixed handheld equipment.
B．Climbers move a fixed distance together on ropes.
C．Climbers receive physical training before the ascent.
D．A guide climbs ahead and sets a rope for others to follow.
（3）What did the group prepare for the ascent of El Capitan？

C

C

A．Professional guidebooks.
B．Medical reports.
C．Necessary supplies.
D．Repair facilities.
（4）What does this passage mainly talk about？

A

A

A．An 8-year-old's record-breaking climb.
B．An 8-year-old's courage to face challenges.
C．An 8-year-old's amazing climbing technique.
D．An 8-year-old's confidence in setting records.