2023年7月29日雅思￡纸笔考试￡机考
考试概述：
本场考试三篇，一旧两新，难度中等。第一篇新题，教育类考察频率不算很高，难度适中；第二篇陨石，宇宙是最近比较喜欢考的话题，考生平时可以多积累相关素材；第三篇航海表的发明，跨学科结合了探险和物品发展史，难度比较高。
二、具体题目分析：
PassageOne：
文章题材：说明文（教育）
文章题目：儿童行为发展对犯罪的影响
文章难度：★★★
题型及数量：待补充
题目及答案：待补充
可参考真题：剑桥18—TEST3Passage3Thecaseformixed-abilityclasses
PassageTwo：
文章题材：说明文（科学）
文章题目：陨石
文章难度：★★★★
题型及数量：待补充
题目及答案：待补充
可参考真题：剑桥18—TEST1Passage3ConqueringEarth’sspacejunkproblem
PassageThree：
文章题材：议论文（跨学科）
文章题目：计时器：航海表的发明
文章难度：★★★★
题型及数量：段落信息配对+判断+填空
题目及答案：
Timekeeper:InventionofMarineChronometer
A
Uptothemiddleofthe18thcentury,thenavigatorswerestillunabletoexactlyidentifythepositionatsea,sotheymightfaceagreatnumberofriskssuchastheshipwreckorrunningoutofsuppliesbeforearrivingatthedestination.Knowingone’spositionontheearthrequirestwosimplebutessentialcoordinates,oneofwhichisthelongitude.
B
Thelongitudeisatermthatcanbeusedtomeasurethedistancethatonehascoveredfromone’shometoanotherplacearoundtheworldwithoutthelimitationsofnaturallyoccurringbaselineliketheequator.Todeterminelongitude,navigatorshadnochoicebuttomeasuretheanglewiththenavalsextantbetweenMooncentreandaspecificstar—lunardistance—alongwiththeheightofbothheavenlybodies.Togetherwiththenauticalalmanac,GreenwichMeanTime(GMT)wasdetermined,whichcouldbeadoptedtocalculatelongitudebecauseonehourinGMTmeans15-degreelongitude.Unfortunately,thisapproachlaidgreatrelianceontheweatherconditions,whichbroughtgreatinconveniencetothecrewmembers.Therefore,anothermethodwasproposed,thatis,thetimedifferencebetweenthehometimeandthelocaltimeservedforthemeasurement.Theoretically,knowingthelongitudepositionwasquitesimple,evenforthepeopleinthemiddleoftheseawithnolandinsight.Thekeyelementforcalculatingthedistancetravelledwastoknow,attheverymoment,theaccuratehometime.Butthegrea