江西省萍鄉(xiāng)市20xx屆高三二模考試英語試題(原卷版)(編輯修改稿)
2025-04-05 06:20 本頁面
【文章內(nèi)容簡介】 mic success or protecting your longterm eyesight. It39。s always going to be a challenge to drag children away from their screens and it39。s likely that more and more studying will be done online. But despite that, Professor Hammond says. “In countries like urban China, where 10% of children in each class per year are being shortsighted from about the age of six. there39。s an argument for saying we should be trying to prevent it.” It39。s evidence we can39。t turn a blind eye to. So, maybe it39。s time to hit the “off” button and get our children outside?8. What can we infer from the first two paragraphs?A. Recent findings have opened our eyes to the issue of eyesight.B. Looking at a screen for too long will get you square eyes.C. It has been confirmed that children39。s eyesight is failing.D. Using electronic gadgets affects children39。s education.9. According to Annegret, which is mainly to blame for shortsightedness?A. Wearing glasses. B. Heavy school work.C. Lack of natural light. D. Booming technology.10. According to the text, what trouble has raised concerns?A. Learning online or offline.B. Reading for pleasure or exams.C. Focusing on study or protecting eyesight.D. Protecting eyesight or promoting technology.11. What does the author call on children to do?A. Study hard. B. Head outdoors. C. Quit puter. D. Challenge more.DBioluminescence, unlike other sources of light（the sun, fire, light bulbs）, which produce energy from heat, is defined as “the emission of light from living organisms（such as fireflies and bacteria）as the result of internal chemical reactions”. It is one of the wonders of nature that just about any of us can witness.While a few organisms can produce bioluminescent light outside of the oceans（think fireflies）, most of the bioluminescence going on is in salt water. In fact, the vast majority of bioluminescent organisms evolved in order to provide light in deep sea marine ecosystems—either to light up prey or as a warning against predators（捕食者）—far below sunlight39。s reach into the water column.Humans have been putting natural bioluminescence to work for a while—19th century coal miners would trap fireflies（instead of openflame candles or lanterns that could cause explosion）in jars to light their way. But nowadays researchers are hard at work synthesizing（合成）the chemical reactions behind bioluminescence for a range of modemday applications.Using bioluminescence to help cure disease is a big focus of some biomedical research panies, given the promise of using heatfree organic light to detect metastasizing（轉(zhuǎn)移的） cancer cells, stem cells, viruses or bacteria within living tissue. The military also has big hopes for applying the chemical reactions of bioluminescence to create light that won39。t cause the heatseeking sensory equipment of the enemy whether on land，at sea or in the sky. Some other practical applications of bioluminescence include an effort to connect genes from bioluminescent organisms into trees that would light up when the sun sets.While none of these “technologies” is yet ready to bee mainstream, it39。s good to know that the future looks bright.12. What exactly causes biolunninescence?A. Heat energy. B. Chemical reaction. C. Salt water. D. Living organism.13. Why did miners use fireflies instead of lanterns in the 19th century to light up?A. To ensure safety. B. To seek fort.C. To provide convenience D. To save money14. What may bioluminescence help to be used as?A. The heatseeking sensory equipment B. A simple cure for all kinds of diseases.C. An allnatural alternative to street lights. D. An effective viruskiller within living tissue
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