首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
UFOs There are many explanations for why UFOs visit the earth. The most popular one is that they may be visitors from other
UFOs There are many explanations for why UFOs visit the earth. The most popular one is that they may be visitors from other
admin
2013-02-05
33
问题
选项
答案
UFOs There are many explanations for why UFOs visit the earth. The most popular one is that they may be visitors from other planets. To fly such aircraft, their builders must develop different forms of viation, because they seem to fly much faster than normal aircraft. The UFOs, it is believed, must contain scientists from other planets who are studying life on earth. It is even believed that several such aircrafts may have landed on earth and the space visitors may be living among us. But there are also less fantastic explanations available. Although some sightings of UFOs are difficult to explain, most can be explained quite easily. In many cases the observers might have made a mistake. They might have seen a weather balloon or an aircraft. Or the light they saw in the sky might have been light from the ground, reflected on the clouds. However, the exact cause of many sightings still remains a mystery.
解析
转载请注明原文地址:https://kaotiyun.com/show/cghK777K
0
专业英语四级
相关试题推荐
About84%ofpeoplehavementalhealthproblemsandathirdoftheUKgeneralpublicfeelsisolated,accordingtoanewreport.
Peoplesometimeswonderabouthowtoensurefamily’sfinancialwell-being.Fora【C1】______varietyofpurposes,familyfinancial
Inasurprisinginteractionatsea,hugewhalesharksfollowfishingnetsneartheislandofNewGuinea—andfishermendistribute
Oneofthebiggestchallengesfacingemployersandeducatorstoday【C1】______therapid【C2】______ofglobalization.Themarketplac
Oneofthebiggestchallengesfacingemployersandeducatorstoday【C1】______therapid【C2】______ofglobalization.Themarketplac
Thecityhasmuchmorebridgesthan______inthecountry.
Pleaseputyouremptycigarettepacketandpaperbagsinthe______binsprovided.
Thepresident’sresidenceisreportedinthenationalnewspaper______lastnight.
Themillionsofcalculationsinvolved,hadtheybeendonebyhand,______allpracticalvaluebythetimetheywerefinished.
AccordingtoAmericanfederalgovernment,residentsofHawaiihavethelongestlife______:77.2years.
随机试题
真核生物成熟的mRNA5ˊ-端具有
人类建过程是从
廷行事
人文社会经济资料的搜集主要包括()。
常温时,等体积等物质的量浓度的下列物质的溶液中,水的电离度由大到小顺序排列的是()。①Na2CO3②NaHSO4③CH3COOH④NaHCO3
构建学习型组织的内容包括()。
针对精神疾病和心理异常的早期发现和早期治疗,防止病情的发展和恶化,这是心理卫生工作()水平的任务。
“三个代表”重要思想这一科学理论在建设中国特色社会主义的思想路线、发展道路、发展阶段和发展战略、根本任务、发展动力、依靠力量、国际战略、领导力量和根本目的等重大问题上取得了丰硕成果,用一系列紧密联系、相互贯通的新思想、新观点、新论断,创造性地回答了(
【2015年第44题】研究人员将角膜感觉神经断裂的兔子分为两组:实验组和对照组。他们给实验组兔子注射一种从土壤霉菌中提取的化合物。3周后检查发现,实验组兔子的角膜感觉神经已经复合;而对照组兔子未注射这种化合物,其角膜感觉神经都没有复合。研究人员由此得出结论
已知两个线性方程组同解,求m,n,t.
最新回复
(
0
)