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14.Two Newcastle scientists are setting themselves to open our eyes to the medical truth by claiming that natural sunlight may help prevent skin cancer.
Dr.Ron Laura,professor of health education at Newcastle University,and senior chemist Mr.John Ashton said their research points to a complete (51)B of the accepted scientific theory.They said that sunscreen creams may help cause skin cancer,the artificial indoor light could be (52)C and that a range of drugs in common use could also (53)A melanoma--a type of cancer that appears as a dark spot on the skin.
The research is likely to be unwelcome in some traditional medical research circles.It is based on a new (54)D that our bodies are protected from skin cancer by the regulation of a group of complex vitamins (Vitamin D) and immune process.
The sunscreens,artificial light and drugs could all unfavorably affect the production of these vitamins and increase the skin's (55)A to the sun.But Dr.Laura said natural sunlight passing through the eyes helped(56)D the production of cancer protection Vitamin D.
He said recent statistics from the United States indicated that people who worked indoors all day in artificial light were more(57)A melanomas than those who worked outdoors.Indoor workers should try to have at least one hour of (58)C to direct sunlight every day,(59)B in the early morning and late afternoon when ultraviolet intensively was lower,Dr.Laura said.
Sunscreens,long (60)C as essential for beach lovers,could also (61)C the production of Vitamin D.Laura and Ashton said sunscreens give people a (62)A sense of security in thinking they are (63)B from the sun's rays.
Dr.Laura said more statistics(64)C their claim had come to light since the first article was published.He believes his research findings are too important to be (65)A to the scientific world.

51.A.contributionB.reversalC.combinationD.recognition
52.A.beneficialB.comfortableC.harmfulD.favorable
53.A.promoteB.reduceC.removeD.eliminate
54.A.assumptionB.lawC.conceptD.theory
55.A.sensitivityB.resistanceC.adaptationD.response
56.A.monitorB.measureC.slowD.stimulate
57.A.subject toB.unrelated toC.free ofD.dependent on
58.A.exerciseB.revealC.exposureD.experience
59.A.occasionallyB.preferablyC.enjoyablyD.extremely
60.A.receivedB.popularC.acceptedD.identified
61.A.balanceB.adjustC.preventD.enhance
62.A.falseB.strongC.trueD.sharp
63.A.separatedB.protectedC.guardedD.prohibited
64.A.presentingB.doubtingC.backingD.providing
65.A.limitedB.emphasizedC.acknowledgedD.explained

分析 两位科学家研究发现自然的阳光有助于预防皮肤癌,促进维他命D的合成,而涂防晒霜来预防紫外线也是错误的做法.这一医学发现正在引起人们关注.

解答 51.B.考查名词辨析.结合后句,说涂防晒霜会导致皮肤癌.而之前我们涂霜是为了防止被晒伤,但现在证明阳光会防止皮肤癌,因此这项研究结果是颠覆我们以往的理论知识.A.contribution贡献 B.reversal逆转 C.combination联合 D.recognition识别.故选B.
52.C.本题不难,这几句都是再说使用一些东西会带来不好影响. 故选C.
53.A.本题和上题一样,都是在讲容易致癌的东西.melanoma虽然不认识,但是根据后句的解释看得出选A,是促进这种恶性循环.故选A.
54.D.名词辨析.句意,两位科学家的说法一般都是基于一种新的理论研究,并配有实验观察结果.A.assumption 假定 B.law 法律  C.concept 概念 D.theory理论.故选D.
55.A.名词辨析.本题是说前面三个主语会大大影响维他命D的产生,使得皮肤难以抵御风吹日晒,就变得对阳光非常敏感.A.sensitivity 敏感 B.resistance 坚持 C.adaptation 改造 D.response 回复.故选A.
56.D.动词辨析.句意说的是自然光线能有效促进维他命D的生成.A.monitor 监视 B.measure 措施 C.slow 减缓 D.stimulate 促进.故选D.
57.A.词组辨析.句意,在室内工作受人工光线照射的人更容易得黑素瘤.A.subject to 使遭受 B.unrelated to 与…无关 C.free of 无…的 D.dependent on 依赖依靠.故选A.
58.C.动词辨析.句意,室内工作者要花点时间暴露在阳光下比较好.A.exercise 锻炼 B.reveal 显示 C.exposure 暴露 D.experience 经验.故选C.
59.B.副词辨析.本题的preferably指的是"更好的"意思.说最好是在清晨和傍晚与外界接触,因为这时紫外线强度低.故选B.
60.C.动词辨析.本题结合后句,说沙滩爱好者认为抹防晒霜很重要,看得出他们是主动接纳防晒霜.A.received 接受 B.popular 流行 C.accepted 接受 D.identified 识别.故选C.
61.C.动词辨析.本题不难.呼应前文便可知道是prevent.故选C.
62.A.句意,防晒霜带给人们的安全感自然是错误的.A.false 错误的 B.strong 强壮的C.true 正确的 D.sharp 锋利的.故选A.
63.B.动词辨析.人们一直都误以为涂防晒霜可以保护皮肤不受太阳光侵害.A.separated 分离 B.protected 保护C.guarded 守卫 D.prohibited 禁止.故选B.
64.C.本题看到Laura对自己的研究成果很自信,对他而言,许多数据自然是支持他的观点.back 有支持的意思,故选C.
65.A.本题可用排除法来做.A.limited 限制 B.emphasized 强调 C.acknowledged 公认 D.explained 解释.只有A选项"他的成果太重要了,不会被局限在科学界"较符合文意.故选A.

点评 本篇完型填空略有难度.主要体现在选项中的单词以及短语上,考生有可能遇到不熟悉的单词而选不出答案.这就要求考生平时多进行知识储备来应对英语阅读.

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