题型:选词填空(语篇) 题类: 难易度:普通
广东省揭阳市揭东区2023-2024学年九年级上学期期中测试英语试题
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Do you feel down more often during the winter months? so, you might have winter depression. It's also known to doctors as seasonal affective disoder(SAD, 季节性情绪失调).
SAD usually starts in fall or winter and in spring or early summer. As the weather gets colder and the days get , you feel more tired, sleepy and even hopeless from time to time.
However, we still don't know the for SAD. Some scientists think that hormone(荷尔蒙) changes can cause this kind of problem. During winter, it dark outside for much of the day. This causes the brain to make more melatonin(褪黑素). This hormone makes you feel sleepy and less .
Getting more sunlight is the way to deal with SAD. Doctors say people should spend at least some time every day during the winter. "Light therapy(疗法)", or using lights at home to simulate(模仿) natural light, can also help. But if you still feel deeply depressed, you should go to a .
Dr. Jack Todd is very interested in clean water. {#blank#}1{#/blank#}, so it's natural that he is to develop a small and affordable system(系统) to clean wastewater. His" Living Machine" can clean wastewater in your home or in your business.
{#blank#}2{#/blank#} The wastewater goes into a big plastic tank where bacteria(细菌) start to break down the waste. {#blank#}3{#/blank#}, the water is brought into a greenhouse filled with plants and fish.
With the help of sunlight, the plants and animals remove more chemicals from the water, making it cleaner. Then the water can be reused for washing or bathing {#blank#}4{#/blank#} but the water is clean enough for watering the flowers, washing the dogs, or even for bathing or swimming.
The advantage of this technology is that it is affordable and good for the environment. {#blank#}5{#/blank#} It can help to use less fresh water, and it can help keep the water supply unpolluted.
A. If enough homes and businesses use" Living Machines" B. People like to plant trees around their houses C. He is also interested in saving money D. It cannot be used for drinking or cooking E. The" Living Machine" is a system for cleaning wastewater F. A few days later it is dealt with |
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