何建奎教授在校外完成的,从侧面是在表明学校对他在校外的研究工作并不知情,是在撇清和他的研究无关。故选C。第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Areyousometimesstressed?Singingisasimpleandeffectivewaytoreducestress.Itisbeneficialmainlyinthefollowingthreeaspects.mendedfortheeldersandthosewhohavesomeformofdisabilityintheirvoice.However,itisimportanttofindacapableinstructortoemploygoodsingingtechniquessoasnottofurtherdamagevocalcords(声带)orlungs.Singingalsohelpstoimproveyourposture(姿势).Mostpeoplethinkthatsingingbeginsandendswiththeirmouth.___17___Singingpracticewillgetyouusedtotheproperbodypositionofstandingandhelpyouformthegoodhabitofstandingstraight.EmotionalBenefitsSinginghelpsinreducingyourdepressionandloweringyourstresslevel.Whenyousing,yourbodyreleaseschemicalsthatmakeyoufeelhappy,easingthetensionandhelpingyoutorelax.
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