原材料引用（Materials）：
This is the VOA Special English Health Report.
Cardiopulmonary resuscitation, or CPR, can save the life of someone whose heart has
stopped. The condition is called cardiac arrest. The heart stops pumping blood. The
person stops breathing. Without lifesaving measures, the brain starts to die within four
to six minutes.
CPR combines breathing into the victim's mouth and repeated presses on the chest.
CPR keeps blood and oxygen flowing to the heart and brain.
However, a new Japanese study questions the usefulness of mouth-to-mouth
breathing.
The study was published in the British medical magazine, The Lancet. Doctors in Tokyo
led the research. It examined more than four thousand people who had suffered
cardiac arrest. In all the cases, witnesses saw the event happen.
More than one thousand of the victims received some kind of medical assistance from
witnesses. Seven hundred and twelve received CPR. Four hundred and thirty-nine
received chest presses only. No mouth-to-mouth rescue breaths were given to them.
The researchers say any kind of CPR improved chances of the patient's survival. But,
they said those people treated with only chest presses suffered less brain damage.
Twenty-two percent survived with good brain ability. Only ten percent of the victims
treated with traditional CPR survived with good brain ability.
The American Heart Association changed its guidelines for CPR chest presses in two
thousand five. It said people should increase the number of chest presses from fifteen
to thirty for every two breaths given.
Gordon Ewy is a heart doctor at the University of Arizona College of Medicine in Tucson.
He wrote a report that appeared with the study. Doctor Ewy thinks the CPR guidelines
should be changed again. He said the heart association should remove rescue breaths
from the guidelines.
He argues that more witnesses to cardiac arrests would provide treatment if rescue
breaths are not a part of CPR. He says this would save lives. Studies show that many
people do not want to perform mouth-to-mouth breathing on a stranger for fear of
getting a disease.
Cardiac arrest kills more than three hundred thousand people in the United States
every year. The American Heart Association says about ninety-five percent of victims
die before they get to a medical center.
And that's the VOA Special English Health Report, written by Caty Weaver. I’m Bob Doughty
音标：
ðɪs ɪz ðə vi-oʊ-eɪ ˈspɛʃəl ˈɪŋglɪʃ hɛlθ rɪˈpɔrt.
ˌkɑrdioʊˈpʊlməˌnɛri rɪˌsʌsɪˈteɪʃən, ɔr si-pi-ɑr, kæn seɪv ðə laɪf ʌv ˈsʌmˌwʌn huz hɑrt hæz
stɑpt. ðə kənˈdɪʃən ɪz kɔld ˈkɑrdiˌæk əˈrɛst. ðə hɑrt stɑps ˈpʌmpɪŋ blʌd. ði
ˈpɜrsən stɑps ˈbriðɪŋ. wɪˈθaʊt ˈlaɪfˌseɪvɪŋ ˈmɛʒərz, ðə breɪn stɑrts tu daɪ wɪˈðɪn fɔr
tu sɪks ˈmɪnəts.
si-pi-ɑr kəmˈbaɪnz ˈbriðɪŋ ˈɪntu ðə ˈvɪktəmz maʊθ ænd rɪˈpitɪd ˈprɛsəz ɑn ðə ʧɛst.
si-pi-ɑr kips blʌd ænd ˈɑksəʤən ˈfloʊɪŋ tu ðə hɑrt ænd breɪn.
ˌhaʊˈɛvər, ə nu ˌʤæpəˈniz ˈstʌdi ˈkwɛsʧənz ðə ˈjusfəlnəs ʌv maʊθ-tu-maʊθ
ˈbriðɪŋ.
ðə ˈstʌdi wʌz ˈpʌblɪʃt ɪn ðə ˈbrɪtɪʃ ˈmɛdəkəl ˈmægəˌzin, ðə ˈlænsət. ˈdɑktərz ɪn ˈtoʊkiˌoʊ
lɛd ðə riˈsɜrʧ. ɪt ɪgˈzæmənd mɔr ðæn fɔr ˈθaʊzənd ˈpipəl hu hæd ˈsʌfərd
ˈkɑrdiˌæk əˈrɛst. ɪn ɔl ðə ˈkeɪsəz, ˈwɪtnəsəz sɔ ði ɪˈvɛnt ˈhæpən.
mɔr ðæn wʌn ˈθaʊzənd ʌv ðə ˈvɪktəmz rəˈsivd sʌm kaɪnd ʌv ˈmɛdəkəl əˈsɪstəns frʌm
ˈwɪtnəsəz. ˈsɛvən ˈhʌndrəd ænd twɛlv rəˈsivd si-pi-ɑr. fɔr ˈhʌndrəd ænd ˈθɜrdi-naɪn
rəˈsivd ʧɛst ˈprɛsəz ˈoʊnli. noʊ maʊθ-tu-maʊθ ˈrɛskju brɛθs wɜr ˈgɪvən tu ðɛm.
ðə ˈrisərʧərz seɪ ˈɛni kaɪnd ʌv si-pi-ɑr ɪmˈpruvd ˈʧænsəz ʌv ðə ˈpeɪʃənts sərˈvaɪvəl. bʌt,
ðeɪ sɛd ðoʊz ˈpipəl ˈtritəd wɪð ˈoʊnli ʧɛst ˈprɛsəz ˈsʌfərd lɛs breɪn ˈdæməʤ.
ˈtwɛnti-tu pərˈsɛnt sərˈvaɪvd wɪð gʊd breɪn əˈbɪləti. ˈoʊnli tɛn pərˈsɛnt ʌv ðə ˈvɪktəmz
ˈtritəd wɪð trəˈdɪʃənəl si-pi-ɑr sərˈvaɪvd wɪð gʊd breɪn əˈbɪləti.
ði əˈmɛrəkən hɑrt əˌsoʊsiˈeɪʃən ʧeɪnʤd ɪts ˈgaɪˌdlaɪnz fɔr si-pi-ɑr ʧɛst ˈprɛsəz ɪn tu
ˈθaʊzənd faɪv. ɪt sɛd ˈpipəl ʃʊd ˈɪnˌkris ðə ˈnʌmbər ʌv ʧɛst ˈprɛsəz frʌm fɪfˈtin
tu ˈθɜrdi fɔr ˈɛvəri tu brɛθs ˈgɪvən.
ˈgɔrdən ˈjui ɪz ə hɑrt ˈdɑktər æt ðə ˌjunəˈvɜrsəti ʌv ˌɛrɪˈzoʊnə ˈkɑlɪʤ ʌv ˈmɛdəsən ɪn ˈtuˌsɑn.
hi roʊt ə rɪˈpɔrt ðæt əˈpɪrd wɪð ðə ˈstʌdi. ˈdɑktər ˈjui θɪŋks ðə si-pi-ɑr ˈgaɪˌdlaɪnz
ʃʊd bi ʧeɪnʤd əˈgɛn. hi sɛd ðə hɑrt əˌsoʊsiˈeɪʃən ʃʊd riˈmuv ˈrɛskju brɛθs
frʌm ðə ˈgaɪˌdlaɪnz.
hi ˈɑrgjuz ðæt mɔr ˈwɪtnəsəz tu ˈkɑrdiˌæk əˈrɛsts wʊd prəˈvaɪd ˈtritmənt ɪf ˈrɛskju
brɛθs ɑr nɑt ə pɑrt ʌv si-pi-ɑr. hi sɛz ðɪs wʊd seɪv lɪvz. ˈstʌdiz ʃoʊ ðæt ˈmɛni
ˈpipəl du nɑt wɑnt tu pərˈfɔrm maʊθ-tu-maʊθ ˈbriðɪŋ ɑn ə ˈstreɪnʤər fɔr fɪr ʌv
ˈgɛtɪŋ ə dɪˈziz.
ˈkɑrdiˌæk əˈrɛst kɪlz mɔr ðæn θri ˈhʌndrəd ˈθaʊzənd ˈpipəl ɪn ðə juˈnaɪtəd steɪts
ˈɛvəri jɪr. ði əˈmɛrəkən hɑrt əˌsoʊsiˈeɪʃən sɛz əˈbaʊt ˈnaɪnti-faɪv pərˈsɛnt ʌv ˈvɪktəmz
daɪ bɪˈfɔr ðeɪ gɛt tu ə ˈmɛdəkəl ˈsɛntər.
ænd ðæts ðə vi-oʊ-eɪ ˈspɛʃəl ˈɪŋglɪʃ hɛlθ rɪˈpɔrt, ˈrɪtən baɪ Caty ˈwivər. aɪm bɑb ˈdɔti
信息与事实（Facts）：
感受与评价（Comments）：
本来周五最迟周六就该完成预习的，但我周末没干正事，赶在deadline之前读顺上传了，但也还有错误。以我现在的颓废劲，我也不知道我能坚持多久。
累计练习数（Hours）:1.5小时