软产道不包括

估计失血量中称重法：失血量=【胎儿娩出后接血敷料湿重g-接血前敷料干重g】/()。

Passage2

Questions6to10arebasedonthefollowingpassage:

Therearetwokindsofmemory:shot-termandlong-term.Informationinlong-termmemorycanberememberedatalatertimewhenitisneeded.Theinformationmaybekeptfordaysorweeks.However,informationoverandover.Thefollowingexperimentshowshowshort-termmemoryhasbeenstudied.

HenningstudiedhowstudentswhoarelearningEnglishasasecondlanguageremembervocabulary.Thesubjectsinhisexperimentwere75collegestudents.TheyrepresentedalllevelsofabilityinEnglish:beginning,intermediate,andnative-speakingstudents.

Tobegin,thesubjectslistenedtoarecordingofanativespeakerreadingaparagraphinEnglish.Followingtherecording,thesubjectstooka15-questiontesttoseewhichwordstheyremembered,eachquestionhadfourchoices.Thesubjectshadtocirclethewordtheyhadheardintherecording.Someofthequestionshadfourchoicesthatsoundalike.Forexample,weather,whether,wither,andwetterarefourwordsthatsoundalike.Someofthequestionshadfourchoicesthathavethesamemeaning.Method,way,manner,andsystemwouldbefourwordswiththesamemeaning.Finallythesubjectstookalanguageproficiencytest.

HenningfoundthatstudentswithalowerproficiencyinEnglishmademoreoftheirmistakesonwordsthatsoundalike;studentswithahigherproficiencymademoreoftheirmistakesonwordsthathavethesamemeaning.Henning’sresultssuggestthatbeginningstudentsholdthesoundofwordsintheirshort-termmemory,andadvancedstudentsholdthemeaningofwordsintheirshort-termmemory.

6.Henningmadetheexperimentinordertostudy.

A.howstudentsrememberEnglishvocabularybyshort-termmemory

B.howstudentslearnEnglishvocabulary

C.howtodevelopstudents’abilityinEnglish

D.howlonginformationinshort-termmemoryiskept

7.WhichofthefollowingstatementsisTRUEaccordingtothepassage?

A.Informationinshort-termmemoryisdifferentfromthatinlong-termmemory.

B.Long-termmemorycanbeachievedonlybytraining.

C.Itiseasiertotestshort-termmemorythanlong-termmemory.

D.Henninggaveaseparatetestonvocabularytohisstudents.

8.FromHenning’sresultwecanseethat.

A.beginnershavedifficultydistinguishingthepronunciationofwords

B.advancedstudentsrememberwordsbytheirmeaning

C.itisdifficulttorememberwordsthatsoundalike

D.itisdifficulttorememberwordsthathavethesamemeaning

9.Theword“subjects”inthepassagemeans.

A.memoryB.thethemeoflisteningmaterial

C.abranchofknowledgestudiedD.thestudentsexperimentedon

以下哪一项是原发性呼吸暂停而不是继发性呼吸暂停的特征?

Thismountainrangehasmanyhigh_____andfertilevalleys.