请教

caizhijun

It is widely assumed that a museum is helped financially when a generous patron donates a potential exhibit. In truth, however, donated objects require storage space, which is not free, and routine conservation, which is rather expensive. Therefore, such gifts exacerbate rather than lighten the demands made on a museum’s financial resources.
Which of the following, if true, most seriously weakens the argument above?
The answer is: objects donated by a patron to a museum are often of such importance that the museum would be obliged to add them to its collection through purchase if necessary.
There is another choice : the people who are most likely to donate valuable objects to a museum are also the people who are most likely to make cash gifts to it.
Why is this choice not correct?

再请问of上527页第113题题干中的论述是为什么，为什么to combat thie problem, more of the takeoff and landing slots at the busiest airport must be allocated to commercial airlines?

范进

1、不管你以前或将来给不给钱，反正你现在别给我增加负担。
2、517？不记得了。