Three groups of professors are traveling on a bus to 3 different destinations.
三组教授乘一辆公共汽车前往三个不同的目的地。
The bus stops first at the airport, then at the hotel, and finally at the university.
这辆公交车首先在机场停靠，然后在酒店停靠，最后在大学停靠。
The luggage compartment in the bus has no partitions and only opens on one side.
这辆公交车的行李舱没有隔板，而且只在一侧开启。
At each stop, the bus driver likes to be able to take out the suitcases easily.
在每一站，公交车司机都喜欢能轻松地取出行李箱。
The bus driver needs to put professors' suitcases into the luggage compartment in a certain order to make this easier.
为了方便起见，公交车司机需要按照一定的顺序把教授们的行李箱放进行李舱。
请问：哪一组的行李箱应该最后放进公交车？
A. it does not matter.
B. the professors who will get off the bus at the airport.
C. the professors who will get off the bus at the university.
D. the professors who will get off the bus at the hotel.
Explanation 解释
The corrrect answer is: the professors who will get off the bus at the airport
正确答案是：将在机场下车的教授们
The last suitcases that are put into the bus will be at the outermost position. They will be the easiest ones to retrieve at the first stop.
最后装上车的行李箱会放在最外侧的位置。在第一站下车时，这些行李箱是最容易拿取的。
The first stop is the airport. Therefore, the group that should put their suitcases into the bus last are the professors who are going to the airport.
第一站是机场。所以，应该最后把行李放进大巴车的是要去机场的教授们。
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