根据以下材料，回答题 TheChinesehaveusedamethodcalledacupuncture(针灸)toperformoperationsforabout4,000yearswithoutputtingthepatienttosleep.Thisinvolvesplacingflexibleneedles(针)intocertainpartsofthebody.TheneedlesusedareavailableinanumberofstoresinChinaandeveryonemaybuythem. Tolearnhowtouseneedletakesaboutonemonthoftraining.Buttobeskillfulrequiresgreatertime.Thepersonwhoperformstheacupunctureknowshowtoputintheneedlessotheneedlesthemselvesarenotpainful.Thispersonalsoknowswheretoplacetheneedlessothepatientfeelsnopainintheareawheretheoperationistobeperformed.Theneedlesarenotnecessarilyinsertedneartheplacewherethepainistobeprevented.Inthepast,aparticularoperationmightrequire25ormoreneedlesplacedinvariouspartsofthebody.Butnowthisoperationrequiresonly3or4needles. TodaytheChinesedoctorsaretryingtolearnmoreaboutacupuncture.Theyaretryingtodevelopaconvincingtheorytoexplainhowtheneedlesworkinpreventingpain,orwhyaneedleinthewrist,forexample,wouldpreventthepainintheareaofthemouth. Apatientwhoneedsanoperationisgivenachoicebetweenhavingacupunctureorhavingoneofthechemicalsusedforputtinghimtosleep.Ithasbeenestimatedthatoverhalfofthepatientschooseacupuncturebecausethereisnosicknessaftertheoperationwhereas(然而，反之)thechemicalmaymakethepatientsickforafewhoursoraday. Whichstatementisnottrueoftheperformerofacupuncture查看材料
A.He knows where to place the needleswithout pain. B.He knows where the operation is to beperformed. C.He knows how to perform the operation tocure the patient. D.He knows how to use the needles in anoperation.正确答案C
