1. (2023九下·广州开学考) 阅读理解

Many people travel to different places in the world by air. Usually it takes a long time, perhaps half a day, for passengers to stay in the plane. So airlines offer passengers food. But it is common that they feel bad about food taste.

To solve this problem, airlines try hard to improve their food. They would like to do so because they don't want to lose customers.

However, according to scientific research, part of the reason why plane food tastes bad is that at high altitude we can not taste things as well as we do on the ground. Also scientists have found that our noses become very dry even before a plane takes off. As the plane moves up, the change in air pressure reduces one third of the sensibility of our taste buds (味蕾). So our taste buds become senseless. The sad fact, however, is that our noses don't know it.

All of these help explain why food on the plane tastes so bad. They also help explain why airlines choose to offer passengers salty and spicy food. Without doing so, the food would be tasteless.

Now there are many researches on this. According to one of them, some volunteers are asked to lie with their feet higher than their heads for weeks. And scientists write down their feelings about food taste.

Though scientists try their best, it is not as easy as they thought. Because they can't deal with the special environment successfully, such as the change in air pressure, making food taste good is still hard for them.

1. （1） Which is the reason why plane food tastes bad?

   A . Food will easily go bad at high altitude. B . People's noses become too dry to smell anything. C . The change in air pressure reduces part of the sensibility to taste. D . Plane food is not salty and spicy enough.
3. （2） Why do scientists feel it hard to make food on the plane taste good?

   A . Because there are not enough researchers on this. B . Because different people have different tastes for food. C . Because volunteers can't lie with their feet higher for long. D . Because the environment on the plane is too special to deal with.
5. （3） What is the best title of the passage?

   A . Taste of Airplane Food B . Airplane Travel C . Scientific Research on Taste Buds D . The Change in Air Pressure