
1 21grams 2016-06-08 18:31:33 +08:00 不知道在说啥 |
3 edwardaa 2016-06-08 19:33:20 +08:00 全国卷英语在全国什么水平, 6 级难度有吗? |
4 SuT2i 2016-06-08 20:12:06 +08:00 via Android 你……头像……有毒……啊… |
5 dphdjy OP |
7 ivmm 2016-06-08 21:28:53 +08:00 看得懂你的问题的人需要具备以下条件 1 , 看过侦探小说 2. 考过全国卷 3. 码农 |
8 dphdjy OP 哦,题目出来了,看看就明白了 (材料) Secretcodes(密码)keepmessagesprivate.Banks,companies,andgovernmentagenciesusesecretcodesindoingbusiness,especiallywheninformationissentbycomputer. Peoplehaveusedsecretcodesforthousandsofyears,36Codebreakingneverlags(落后)farbehindcodemaking.Thescienceofcreatingandreadingcodedmessagesiscalledcryptography. Therearethreemaintypesofcryptography.37Forexample,thefirstlettersof"Myelephanteatstoomanyeels"spelloutthehiddenmessage"Meetme." 38Youmightrepresenteachletterwithanumber,forexample.Let'snumberthelettersofthealphabet,inorder,from1to26.Ifwesubstituteanumberforeachletter,themessage"Meetme"wouldread"135520135." Acodeusessymbolstoreplacewords,phrases,orsentences.Toreadthemessageofarealcode,youmusthaveacodebook,39Forexample,"bridge"mightstandfor"me."Themessage"bridgeout"wouldactuallymean"Meetme."40However,itisalsohardtokeepacodebooksecretforlong.Socodesmustbechangedfrequently. @ivmm @SuT2i @edwardaa @21grams |
10 kimchong 2016-06-08 21:49:10 +08:00 via Android 楼主全对了吧 XD |
11 edwardaa 2016-06-08 21:57:04 +08:00 楼主既然能上这论坛,我估摸着你英语再怎么落后也不会不行的。。。 |
12 21grams 2016-06-08 22:49:23 +08:00 via Android 原来高考英语这么简单 |
13 dphdjy OP |