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试卷预览

Thepassageismainlyabout_

A、theusesoflifepreservers
B、thedesignoflifepreservers
C、thematerialsforlifepreservers
D、thebuoyancyoflifepreservers

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Accordingtothepassage，alifebefirstofall

A、adjustable
B、comfortable
C、self-evident
D、selfrighting

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UnitedStatesCoastGuarddoesNOTrequirethelifepreservertobemade_

A、withasfewstringsaspossible
B、capableofbeingwornonbothsides
C、accordingtoeachwearerssize
D、confortableandlighttowear

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By“theuninitiatedindividual”(Para.1，Line.4)theauthorreferstotheperson

A、whohasnotbeeninstructedhowtousealifepreserver
B、whohasalittleexperienceinusingalifepreserver
C、whousesalifepreserverwithoutpermission
D、whobecomesnervousbeforeadisaster

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Whatwouldhappenifapersonweresupportedbythelifepreserverinawrongposition?

A、Thewaveswouldmovehimbackwards
B、Thewaterwouldchokehim
C、Hewouldimmediatelysinktothebottom
D、Hewouldbeexhaustedorunconscious

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