People can climb ______ several such kind of mountains in one da

People can climb ______ several such kind of mountains in one day.
A、at ease
B、easy up
C、ease up
D、with ease
【正确答案】：D
【题目解析】：本题考查有关ease的词组辨析。A.at ease：舒适，自由自在；B.easy up：无此表达，可排除；C.ease up：无此表达，可排除。D.with ease：熟练地,不费力地。根据题意，“人们可以很轻松地在一天内爬完好几座这样的山。"D最符合题意。答案为D。