複選題25. (AB) The hardy group of hikers slogged through snow, scrambled over rock and up through the dense forest. (AC) The world’s first double chairlift was built in 1949, replacing a two-to-three-hour hike from the skiers’ bus stop at the base of the mountain. (AD) Soon after this first ascent, Grouse Mountain began attracting hundreds of intrepid hikers.