题型：阅读选择 题类：模拟题 难易度：普通
山东省济南市济阳区2020年九年级英语学业水平模拟（一模）试卷
Everybody's house smells in some way.
You almost never even notice the way your own place smells. You notice the way everyone else's place smells as soon as you walk in. There are their cats, and the soap, and the new furniture they just got. And those all add up to the way their house smells.
But you can only smell your own house after you've been away for a while—like, a long while. Not just a workday, but like a week.
It has to do with sensory adaptation (感觉适应). That's the scientific way to say that you just get used to it. And it's more pronounced for our sense of smell than for any other sense, like our hearing, for example.
Researcher Pamela Dalton at the Monell Chemical Senses Center has done a lot of work on sensory adaptation. She and her team say that adaptation means you respond (做出反应) less when a stimulus (刺激物) is repeated. So when you're at home, the smell of your house is all around you. It never goes away. It's not just repeated—you're swimming in it. So you become adapted to the way it smells.
The thing with smell, though, is that you adapt to smells really quickly. After "even a few breaths" of a smell, Dalton says, you begin to acclimate to it.
You start to experience that smell as being less strong and finally take no note of it at all. That's why you can smell your friend's house when you walk in, but you don't really notice it all the time you're there.
Being able to detect (探测) smells is important. It might warn you of danger, like an approaching (接近的) tiger or something gone bad in your drinks. Or it might mean something pleasant, like that fresh bread or the blooming flowers.
Your nose can stay on the lookout for new smells that are dangerous or delicious.
It might be a simple housekeeping thing, like a dishwasher in the kitchen or towels in the bathroom that needs to be cleaned.
Then, if you still want to change the way your house smells, many things might do the trick, like a million candles, fresh fruits, or a bottle of perfume.
Our life will be different from nowadays with robots appearing in our homes. So what will the future be like? Here are some students' ideas.
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I expect to live in a more beautiful and cleaner city. The street will be cleaned by the robots once a day. —Ben |
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There will be more kinds of food to choose from and the food will be more delicious. The robots can make food for us。 —Karen |
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We do not have to spend much time on heavy work because robots will take up most of our work, such as washing the clothes. So we will have more vacations. We can take a vacation on the moon. We will not live on the earth but on the moon or other planets. —Mark |
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I expect that most families will have their own planes made by their robots, and travel will become more convenient. The plane is faster than any other transportation(交通工具). —Sue |
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I hope robots can make clothes for us. The clothes could change their sizes and colors by themselves. —Sam |
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