2019年12月英语四级阅读真题及答案 第3套 选词填空

可可听力网 2020年09月25日 16:58:51

      Millionsofpeopletravelbyplaneeverysingleday. Ifyou'replanningonbeingoneofthemsoon, youmightnotbelookingforwardtothe __26__ feelingairtraveloftenleavesyouwith. Besidestheairportcrowdsandstress, travellingatahighaltitudehasrealefectsonthebody. Althoughthepressureofthecabinis __27__ topreventaltitudesickness, youcouldstill __28__ sleepinessoraheadache. Theloweroxygenpressurefoundinanaircraftcabinis __29__ tothatat 6,000-8,000 feetofaltitude. Adropinoxygenpressurecancauseheadachesincertain __30__ Tohelppreventheadaches, drinkplentyofwater, andavoidalcoholandcoffee.

      Aiplanefoodmightnotreallybeastatelessasyou __31__ thought. Theairyoubreatheinaplanedriesoutyourmouthandnose, whichcanaffectyoursenseoftaste. Perceptionofsweetandsaltyfoodsdroppedbyalmost 30 percentinasimulationofairtravel. However, youcanmakeyourtastebudsactiveagainbydrinkingwater. Adrymouthmay __32__ tastesensitivity, buttasteisrestoredbydrinkingfluids.

      Althoughin-flightinfections __33__ indryenvironmentslikeairplanes, yourriskofgettingsickfromanairplaneisactuallylowbecauseoftheair __34__ used. Unlessyou'resttingnexttosomeonewhoiscoughingorsneezing, youshouldn'tworrytoomuchaboutgettingsick. However, bacteriahavebeenshowntoliveoncabinsurfaces, sowashyourhands __35__.

      A) adjusted
      B) channels
      C) equivalent
      D) experience
      E) filters
      F) frequently
      G) individuals
      H) originally
      I) particular
      J) primarily
      K) reduce
      L) renovated
      M) smooth
      N) thrive
      O) unpleasant

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