题目

阅读理解Dream Big with CaledoniaCaledonian Sleeper is a gateway to aworld of possibilities with our overnight rail service bringing a touch of theextraordinary to travel between London and Edinburgh.Taste the local food, have the ultimatesleep on our comfortable bed and enjoy a private room with toilet and shower.And above all, wake up refreshed, ready to start an adventure at yourdestination. Caledonian Double Club Room Classic Room Comfort Seats double bed 2 single beds twin bunk beds breakfast included breakfast included brea下列情况中做功一定为1焦的是A.将重为1牛的物体移动1米B.将重为1牛的物体竖直向上移动1米C.用1牛的力使物体移动1米D.用竖直向上的1牛的力使受力物体竖直向上移动1米