题目内容：

    Ciudad Perdida, Colombia’s “Lost City” is older than Machu Picchu. There are no trains or buses allowing of _______travels to reach its ruins. The remote place is only_______on foot: a tiring multi-day hike.

Despite this, I couldn’t_______the opportunity to visit Ciudad Perdida. 12 other hikers and I went there in_______with a licensed guide. The dirt path, which_______through towering palms and dangling vines（藤蔓）, proved_______right from the start. It’s recommended hikers have good physical_______, as the journey is difficult. Horses helped to carry basic_______like food to the cabins where we would sleep. Along the way we also met the_______. They have been left undisturbed for centuries and there’s a deep__________between them and the land.

The next morning, we were off early to__________the heat, but high temperatures and muscle pain had already__________by the time we reached the final stage-1,200 stone steps to__________.After finally lifting my__________body up the long flight of stairs, my eyes rested on the scene that had__________the hard journey: Ciudad Perdida.

I looked down and__________at the beautiful site below. We were among a handful of other groups visiting, which seemed like__________compared to other crowded tourist attractions. While the return trip included__________the mental hurdle（障碍）of having already accomplished our goal, the experience is the one I would do__________. It is the difficulty that makes the journey a more__________one. Earned views are always better.

1.A.long B.easy C.frequent D.endless

2.A.impressive B.dangerous C.worthwhile D.accessible

3.A.resist B.obtain C.promote D.grasp

4.A.harmony B.combination C.company D.communication

5.A.buried B.spread C.spun D.wound

6.A.disappointing B.embarrassing C.challenging D.amazing

7.A.character B.fitness C.independence D.confidence

8.A.equipment B.furniture C.possessions D.necessities

9.A.natives B.visitors C.guides D.drivers

10.A.difference B.distance C.bond D.belief

11.A.reduce B.avoid C.refuse D.abandon

12.A.watched out B.cut off C.set in D.gave in

13.A.cover B.catch C.construct D.explore

14.A.energetic B.painful C.unhealthy D.damaged

15.A.convinced B.predicted C.motivated D.surprised

16.A.aimed B.pointed C.viewed D.wondered

17.A.something B.nothing C.anything D.everything

18.A.overcoming B.memorizing C.observing D.fixing

19.A.otherwise B.instead C.though D.again

20.A.rewarding B.sensitive C.popular D.flexible