高中英语 Unit 2 Sailing the oceans Grammar练习 新人教版选修9

Unit2Sailingtheocean 一词汇 1. However,itwasa_______touseasoneofthepointsofreferencewasthemoving shipitself. 2. Thiswasamorepreciseands_______versionoftheastrolabe. 3. Itprovedtobethemostaccurateandr_______oftheseearlynavigational instruments. 4. Thisseemstohavebeenthefirstandmostusefulformofexplorationwhichcarried them___________amountofrisk. 5.Oncewewereatsea,ourr_______everydaywasthesame. 6. Thereisaspecialcloudformationwhichi_________thereislandcloseby. 7. Seamencouldfollowthebirdstolandeveniftheywereo__________andintheopen sea. 8. Wiseseamencoulda____________thespeed,buttheycouldalsobedangerous. th 9. Thereisnos_______methodofmeasuringlongitudeuntilthe17centurywhenthe Britishsolvedthistheoreticalproblem. 10. Anearlymethodofmeasuringspeedinvolvedthrowingak_________ropetiedtoa logoverthesideoftheship. 11. Thecompasshasaspecialm_________pointerwhichalwaysindicatestheNorthPole. 12. Thesextantwastheu_________versionoftheastrolabeandquadrantwhichreduced thetendencytomakemistakes. 13. Itwass_______quantitiesbuttheextremelackofwaterwasthehardesttocope withpsychologically. 14. Thed_____________ofstayingontheshipseemedtogrowasIthoughtabouthow wrongitwastotreatCaptainBlighinthisway. 15. Thet__________intheboatgotworseasthesupplyoffoodandwatergradually disappeared. 二语法填空 IamproudtohavesailedwithCaptainBligh____1___hisjourneyofover40days 1