高一期末必考英语作文 高一期末必考英语作文1Nowadays cyber criminals seem to be everywhere, with a few clicks, committing all kinds of cyber crimes. To illustrate, some commit fraud or lift intellectual property. Others subvert deals, snatch passwords or disrupt e-commerce. Still others unleash viruses to crash computers. As a result, these hackers do a great damage to companies and computer users, causing computer losses up to 10 billion dollars per year.Naturally,there are many causes for the cyber crimes. In addition to the wicked nature of the hackers, the fraihies of Internet partially nourish the crimes. Just because there are holes in Internet, the complex software is buggy and often infested, the cyber vandals can find out the weakness in the Website software programs and IV manipulating software glitches, gain access to Website, committing all kinds of crimes.However, we shouldnt tolerate these cyber criminals any more. And its high time for us to take all the effective steps to battle the cyber crooks. First we should reinforce the cyber laws to protect the Web, the powerful engine of economy. Besides,we should use high techniques to improve intrusion detection, encrypfion and computer security. Finally, we should train more talented people to build up more firewalls so as to make the net immune to all kinds of viruses and unalienable to all kinds of cyber criminals.高一期末必考英语作文2Haze is air pollution in which is mixed up with dust, smoke and other dry particles ,and it obscure the clarity of the sky and interacts with the natural environment.This kind of air pollutant come from a variety of natural and manmade sources. Natural sources can include windblown dust, and soot from wildfires. Manmade sources can include motor vehicles, and industrial fuel burning, and manufacturing operations. The one of the main cause that touches off haze is manufacturing operations. Many factories were over measure produced the smog that had over the standard and the smog seriously influence the air become air pollution.The components that make up haze may have negative effect on peoples health especially that of the children and the elderly. Also not excluded are those who have certain diseases such as asthma, allergy, and pneumonia and lung disease. Workers working in the open air have a high risk in their health.One of effective solutions to help eliminate haze is to make some chemistry changes during the manufacturing process,so it could reduce harmful emissions which are produced by manufacturing operations高一期末必考英语作文3Environmental problems are becoming more and more serious all over the world. With the development of industry and agriculture, cars make great noises and give off poisonous gas. Trees on the hills have been cut down,and waste water is being poured continuously into rivers. Furthermore,wherever we go today, we can find rubbish carelessly disposed. The whole ecological balance of the earth is changing. Massive destruction of environment has brought about negative effects and even poses a great threat to mans existence.We must face the situation that exists and take actions to solve our environmental problems. For instance, new laws must be passedto place strict control over industrial pollution, the pub!ic must receive the education about the hazard of pollution and so on. We hope that all these measures will be effective and bring back a healthful environment.高一期末必考英语作文4When I was in middle school, I moved to the city to live with my parents, I miss my hometown all the time, I cant forget about the beautiful mountain and the clear water. So in this summer vacation, I went back to my hometown, when I saw the familiar country road, I was so happy, I knew I was close to the nature.I took in the fresh air, I smelt the straws flavor, I took a look at the mountains and the clear water again. All of these made me relaxed, the nature was right in front of me. I hope the scenery wont change all the time, once I have time, I will come back to enjoy it.高一期末必考英语作文5When a guest comes to my home from afar on a cold night, I light bamboo to boil tea to offer him.” Ancient Chinese poem.China is the home country of tea. Before the Tang Dynasty, Chinese tea was exported by land and sea, first to Japan and Korea, then to India and Central Asia and, in the Ming and Qing dynasties, to the Arabian Peninsula. In the early period of the 17th century, Chinese tea was exported to Europe, where the upper class adopted the fashion of drinking tea. Chinese tealike Chinese silk and chinahas become synonymous worldwide with refined culture. At the heart of the culture of teathe study and practice of tea in all its aspectsis the simple gesture of offering a cup of tea to a guest that for Chinese people today is a fundamental social custom, as it has been for centuries.China traces the development of tea as an art form to Lu Yu, known as the Saint