题目

Where you choose to stay can make or break your vacation experience.But even the most experienced travelers may not know the difference between the two main types of homes-away-from-home—hotels and motels. 【1】 The answer isn’t as simple as you’d think.These two types of lodging(住宿)have the same basic purpose—a place for travelers to sleep.【2】 For instance，they came to be for different reasons，and at very different times.The word“hotel”dates back to the 1600s and comes from a French word，hôtel.That word，just like the English one.referred to a place that provides函数f（x）=xa-ax（0＜a＜1）在区间[0，+∞）内的最大值点x0的值为（　　）A．1B．12C．0D．a