首页
登录
职称英语
In an uncritical August 11, 1997, World News Tonight report on "diamagnetic
In an uncritical August 11, 1997, World News Tonight report on "diamagnetic
游客
2025-01-28
7
管理
问题
In an uncritical August 11, 1997, World News Tonight report on "diamagnetic therapy", a physical therapist explained that "magnets are another form of electric energy that we now think has a powerful effect on bodies". A fellow selling $89 magnets proclaimed: "All humans are magnetic. Every cell has a positive and negative side of it."
On the positive side, these magnets are so weak that they cause no harm. On the negative side, these magnets do have the remarkable power of attracting the pocketbooks of gullible Americans to the tune of about $300 million a year. They range in scale from coincided patches to mattresses, and their curative powers are said to be nearly limitless, based on the premise that magnetic fields increase blood circulation and enrich oxygen supplies because of the iron pressure in the blood.
This is fantastic flapdoodle and financial flimflam. Iron atoms in a magnet are crammed together in a solid state. In your blood only four iron atoms are allocated to each hemoglobin molecule, and they are separated by distances too great to form a magnet. This is easily tested by picking your finger and placing a drop of your blood next to a magnet.
What about claims that magnets attenuate pain? In a 1997 Baylor College of Medicine double-blind study of 50 patients (in which 29 got real magnets and 21 got sham ones),76 percent in the experimental group but just 19 percent in the control group reported a reduction in pain. Unfortunately, this study included only one 45-minute treatment, did not try other pain-reduction
modalities
, did not record the length of the pain reduction and has never been replicated.
Scientists studying magnetic therapy would do well to read the 1784 "Report of the Commissioners Charged by the King to Examine Animal Magnetism" (reprinted in an English translation in Skeptic, Vol.4, No.3 ). The report was instituted by French King Louis XVI and conducted by Benjamin Franklin and Antoine Lavoisier to experimentally test the claims of German physician Franz Anton Mesmer, discoverer of "animal magnetism". Mesmer reasoned that just as an invisible force of magnetism draws iron shavings to a lodestone, so does an invisible force of animal magnetism flow through living beings. [br] There is no magnet in blood because________.
选项
A、there is only one hemoglobin molecule in blood
B、there are only four iron atoms in blood
C、the iron atoms in blood are allocated to each hemoglobin molecule only
D、the iron atoms in blood are far away from each other to form a magnet
答案
D
解析
根据第三段第三句“In your blood only four iron atoms are allocated to each hemoglobin molecule,and they are separated by distances too great to form a magnet.”可知,答案为D。
转载请注明原文地址:https://tihaiku.com/zcyy/3932905.html
相关试题推荐
Peoplewhosepropertyisstolenshouldreporttothepolice.A、hadstolenB、isbe
Peoplewhosepropertyisstolenshouldreporttothepolice.A、hadstolenB、isbe
Allinformationreportedtoorlikewiseobtainedbythecommissionisconsidered
ThenewsitemaboutthefireisfollowedbyadetailedreportmadeontheA、spot
Accordingtosomerecentreports,theurbanmasses,particularlymiddle-classwo
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetic
随机试题
南京长江大桥是长江上首座由中国设计、采用国产材料建造的铁路、公路两用桥,上层的4车道公路桥长4589米,下层的双轨道铁路桥长6772米。铁路桥连接原来的
Norms:TypesandAcceptanceSociologists
根据国家有关标准,安全标志是用以表达特定安全信息的标志,由图形符号、安全色、几何
颅内高压症所致呕吐的特点是A.喷射性,无恶心,呕吐后不轻松 B.喷射性,无恶心
对气单胞菌属生物特点叙述正确的是A.氧化酶(-),触酶(+)B.氧化酶(+),触
原卫生部《医药卫生中长期人才发展规划(2011-2020年)》提出有重点地分步培
结肠损伤后多行肠外置或造口术的原因是A.肠内容物细菌多,术后感染发生率高 B.
2009年5月2日,甲公司与乙公司签订了货物买卖合同。合同签订后,甲公司于6月
A.抑制氨基酰-tRNA与原核细胞核蛋白体A位结合 B.抑制真核生物核蛋白体转
下列不属于环境影响预测方法的是( )。A.数学模式法 B.类比调查法 C.
最新回复
(
0
)