题型:阅读选择 题类: 难易度:困难
山东省济宁市2024年中考英语试题
Sometimes when the rain falls hard and fast on you, it might hurt a little. But what happens when it hits a mosquito(蚊子)?
In 2012, David Hu, a scientist at Georgia Tech, became interested in this problem and decided to do a research. He used a high- speed camera so that he could watch the mosquitoes in very slow motion and find out what they' re doing when they' re out in the rain.
What he found is that when a raindrop falls on a mosquito, it's like when a bus hits a person. Besides, the little insect(昆虫) is hit by a raindrop about once every 20 seconds. So why don't we see many dead mosquitoes after it rains?
A mosquito is as big as a raindrop, but it is much lighter—0.002g only. This saves its life in raindrop hits. Because the mosquito is so light, when it is hit by a raindrop, it won't experience a force that is strong enough to kill it.
The study also found that when a mosquito is hit by a raindrop, the insect is pushed by the raindrop and falls together with it. But the mosquito doesn't get wet easily because it is covered with hairs which keep off water. After dropping about 6 cm, it will roll off the raindrop and fly away.
However, this trick isn't always successful. If the mosquito flies too low when it is hit by the raindrop, it won't have time to fly off. Then it will hit the ground and meet its death.
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Taking exams will be one of the most stressful times of your life, especially when you have your parents and your teachers telling you all the time {#blank#}1{#/blank#} important exams are. You will probably be under even more {#blank#}2{#/blank#} if you have an older brother or sister who has already done well in {#blank#}3{#/blank#} exams and your parents expect you to do so too. But don't worry, because it's{#blank#}4{#/blank#} to feel stressed before taking an exam. In fact, research has {#blank#}5{#/blank#} that a little stress in your life can motivate (激励) you and help you get better results.
Falling leaves and cold wind show the arrival of another season. December 13th is Lidong. It is a Chinese word for one of the 24 solar terms (二十四节气). {#blank#}1{#/blank#}
To welcome Lidong, people have many colorful customs (风俗) that light up the cold days. {#blank#}2{#/blank#} Eating well helps people store energy (存储能量) to beat the cold in winter, and prepare for the growth in the coming spring. {#blank#}3{#/blank#} The Chinese word for dumpling—jiaozi (饺子) has a similar pronunciation (发音) to the word "change"—jiao. Eating dumplings means celebrating (庆祝) the change of autumn to winter. While in the south, eating chicken, duck and fish is common.
{#blank#}4{#/blank#} In the past, there were not many fresh vegetables to eat in winter. Therefore, around Lidong some people who lived in the north began to store vegetables like cabbages and green onions. However, some of the customs have disappeared (消失) now. {#blank#}5{#/blank#} Instead, new winter customs come out in certain places.
A. In the north, people like eating dumplings. B. According to history, Lidong was also a time for people to store vegetables. C. Most people buy fresh vegetables in the supermarket. D. It is the start of the winter. E. One of the most popular customs is to have a big meal. |
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