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小学生英文科技论文写作

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小学生英文科技论文写作

小学生英文科技论文写作1

The Chinese nation is a nation with a fine tradition of diligence and frugality, and the Chinese people have maintained this fine style since ancient her in the production of labor or in daily life, but also embodies this characteristic, always trying to the most economical way, as much as possible to do is by this good idea that we understand how to save energy problem is of extraordinary significance to our country as a populous country, with the development of economy, the large-scale development of resources, energy shortages will become more prominent. The influence of the modernization of our country to a great country is still so far to promote thrift style of major construction at the Olympic venues, the state is from the actual need to consider, put forward the "thrifty Olympics" slogan; in this year's 55th anniversary National Day have put forward the "thrifty day" country is from the perspective of the whole community, to save energy to do thrifty style of gy savings can reduce spending, boost economic growth, protect our environment, and become a prerequisite for sustainable development, and for our children and grandchildren.

In the city the night, roads are lit on both sides of the street intensive but neat, looks like a dragon fly, although this is a beautiful landscape, but many times the light of these lamps are wasted, because a large part of the time, the road is empty, this situation is particularly common in the economic and the traffic is not very developed enormous waste of power resources has a negative impact on the economy of these , is there an automatic control device that is convenient for pedestrians and vehicles at night and saves energy?

Saving energy is actually reducing energy losses as much as the remote roads, traffic is very little, and long hours of street lights, no matter whether there are vehicles or vehicles, pedestrians or pedestrians, have caused great waste of if there is a vehicle passing, should not all line lights are on, should only in the vehicle within the effective range of the street light, otherwise it will cause great losses!Pedestrian walking on the road is the same, only in the pedestrian walk within the corresponding range to open the street lamp, to meet the needs of can I tell if someone is in the street?

We can use an instrument that lights the street automatically when someone or a car is in the the sensor does not produce air through sound vibration control, but through the vehicles and pedestrians on the road impact and pressure caused by pavement vibration control, the two kinds of vibration is different, otherwise it will be a strange combination of circumstances might be animal sounds, and the roar of the road outside lights, the same as not to the purpose of saving the noise made by the traffic or pedestrian is too small, the light won't turn onThen, in name only, it doesn't driving, pedestrian walking, will naturally impact on the ground and pressure, so that the road vibration, which can use the vibration of the road to control whether the street lights bright or device uses shock and pressure vibrations to control the street lights, which can be a good source of energy savings.

Power generation needs to consume a lot of resources, save electricity, save resources and protect the r saving should start from daily life. When using refrigerators at home, the practice of saving electricity is:

't put much food in the fridge

2. do not switch the refrigerator door again and again

3., in the refrigerator, in the sides and back space, to help the refrigerator cooling

4. do not put refrigerators and microwave ovens and other appliances together

China is a big producer of batteries and a big consumer of all kinds of electronic products: mobile phone, MP3, Kuaiyitong emerge in an endless stream, electronic calculators, electronic watches, cameras and so on, beyond count, these products require the use of if the battery after use, not centralized treatment, casually discarded, will cause serious pollution to the environment, for example, a scrap button battery can pollute 600 thousand liters of water, it can be seen how dangerous it r running out of batteries, we can transport waste batteries to specialized waste battery processing centers, so that they can help us can not only reduce the pollution of the battery, but also can be used second times, killing two birds with one stone.

小学生英文科技论文写作2

"Ah - ah!"......"I am yawning, squinting, I can not help but raise a question: why do people yawn?What's the secret of yawning?I asked my father and grandpa, and they only talked about it.I can barely understand it, but I still don't understand it.

In order to relieve my confusion, I searched the Internet for some turned out that a yawn is six this period, can let a person be out of touch with reality, body nerve, muscle ing, therefore, is a conditioned reflex of deep breathing activity, a physiological response of the brain to nerves when tired, expressing dull, sleepy, or soothing tension in everyday re, Grandpa said yawning was a sign of oxygen deficiency in the brain, which was not the the contrary, by yawning deep breathing, people increase oxygen in the blood and emit more carbon dioxide, which makes us more le tend to yawn when they are tired, which reminds the body that the brain is tired and needs sleep and rest, so yawning is also a hypnotic people are about to enter the busy work, often yawn, this may be the human body by deep inspiration, so that the blood more oxygen, improve brain a word, yawning is an instinctive reaction of the human body and has a good protective effect on the human 's more, dad said it was ing is a warning that the body needs a break, he ing at the data, I realize that yawning is actually refreshing the you will find that we often yawn a lot before something important or 's not that our minds aren't tight enough, but the brain is pumping us down" do we yawn?In a long time in the slow yawn or after shallow breathing, a common cause of excessive yawning fatigue, tension, sedentary, do homework or reading, the waistband too tight, overheating room and le often yawn when they leave the cinema and other places of amusement. This is not a sign of boredom, but the reason why they sit quietly for too long.

After checking the data, I finally understand why people I have another problem in my heart: hearing people say yawning is is it really the case?I don't quite believe this time, I don't go online to look up information. I'll do it day, I went out with a good friend. It was very late for me to come home.I was yawning and enly, I thought it was a good time to do the experiment. I hurried downstairs. Grandma had been losing sleep recently: she couldn't sleep well and sleep hard every always sleeps for a few minutes and wakes up r, she simply did not sleep all night, watching TV, the morning the people have no spirit, a sickly my family were worried about her, whether she would be ill or not.I thought while walking: "since yawning is contagious, then I yawn, and grandma must be yawning."Yawning makes it possible for grandma's nervous nerves to dma would fall asleep naturally, and I could finish my 's really the best way to have the best of both k of it, I've got dma was sitting in front of the television, staring at her bloodshot eyes.I stepped forward quickly, just to call a "grandma", but yawn, but the first step on the stage: "ah - ah!"......"Grandma looked at me, and she could not help yawning: "ah - ah!", I want to sleep, you can go to - oh......"As she spoke, she walked back to the room.I looked at Grandma's back, happy to jump three feet high - my experiment succeeded, and grandma's insomnia was cured by me!This yawn is really contagious!The second day, I looked at the book, but also understand why yawning is contagious: brain region when yawning and regional brain activity of sympathy is is to say, yawning's "contagion" phenomenon may represent an unconscious mental imitation.