Directions:Revisethefollowingsentenceswherenecessary.Ourdatasuggestthathighserumlevelsofascorbicacidareindependentlyassociatedtoadecreasedprevalenceofelevatedbloodleadlevels.
举一反三
- with directions
- 【单选题】A sudden noise made all the birds in the tree fly ________. A. in all direction B. in the directions C. in all directions D. to all directions
- PartI.ListeningComprehension Directions:Thispartistotestyourlisteningability.Itconsistsof3sections. SectionA(8points) Directions:Thissectionistotestyourabilitytogiveproperresponses.Thereare4recordedquestionsinit.Aftereachquestion,thereisapause.Thequestionswillbespokentwotimes.Whenyouhearaquestion,youshoulddecideonthecorrectanswerfromthe4choicesmarkedA,B,CandD.
- Directions:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Youmaynotuseanyofthewordsinthebankmorethanonce.
- Directions:Revisethefollowingsentenceswherenecessary.Apreliminaryresearchoftherelationshipbetweenthecontentofpotassiumindietandbloodpressure(Title)