2017届高考英语二轮阅读理解训练：（1）
<p> 2017届高考英语二轮专题训练：阅读理解（1）</p><p> <span word="A">A</span></p><p> <span word="A">A</span> new study has found no evidence that sunscreen, commonly used to reduce the risk of skin caner, actually increases the risk.</p><p> <span word="Researchers">Researchers</span> <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="lows">lows</span> <span word="based">based</span> <span word="their">their</span> <span word="firdings">firdings</span> <span word="on">on</span> <span word="a">a</span> <span word="review">review</span> <span word="of">of</span> 18 <span word="earlier">earlier</span> <span word="studies">studies</span> <span word="that">that</span> <span word="looked">looked</span> <span word="at">at</span> <span word="the">the</span> <span word="associstion">associstion</span> <span word="between">between</span> <span word="sunscreen">sunscreen</span> <span word="use">use</span> <span word="and">and</span> <span word="melanoms">melanoms</span>(黑素瘤). <span word="They">They</span> <span word="said">said</span> <span word="that">that</span> <span word="they">they</span> <span word="found">found</span> <span word="flaws">flaws</span> <span word="in">in</span> <span word="studies">studies</span> <span word="that">that</span> <span word="had">had</span> <span word="reported">reported</span> <span word="associations">associations</span> <span word="between">between</span> <span word="sunscreen">sunscreen</span> <span word="use">use</span> <span word="and">and</span> <span word="higher">higher</span> <span word="risk">risk</span> <span word="of">of</span> <span word="melanoma">melanoma</span>.</p><p> <span word="Most">Most</span> <span word="health">health</span> <span word="experts">experts</span> <span word="believe">believe</span> <span word="that">that</span> <span word="by">by</span> <span word="protecting">protecting</span> <span word="the">the</span> <span word="skin">skin</span> <span word="from">from</span> <span word="the">the</span> <span word="harmful">harmful</span> <span word="effects">effects</span> <span word="of">of</span> <span word="the">the</span> <span word="sun">sun</span>, <span word="sunscreen">sunscreen</span> <span word="helpsprevent">helpsprevent</span> <span word="skin">skin</span> <span word="cancer">cancer</span>, <span word="which">which</span> <span word="is">is</span> <span word="increasing">increasing</span> <span word="in">in</span> <span word="incidence">incidence</span> (发生率) <span word="faster">faster</span> <span word="than">than</span> <span word="any">any</span> <span word="other">other</span> <span word="cancer">cancer</span> <span word="in">in</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span>.</p><p> <span word="But">But</span> <span word="questions">questions</span> <span word="have">have</span> <span word="been">been</span> <span word="raised">raised</span> <span word="about">about</span> <span word="sunscreen">sunscreen</span> <span word="and">and</span> <span word="whether">whether</span> <span word="it">it</span> <span word="may">may</span> <span word="have">have</span> <span word="the">the</span> <span word="opposite">opposite</span> <span word="effect">effect</span>, <span word="perhaps">perhaps</span> <span word="by">by</span> <span word="allowing">allowing</span> <span word="people">people</span> <span word="to">to</span> <span word="remain">remain</span> <span word="exposed">exposed</span> <span word="to">to</span> <span word="the">the</span> <span word="sun">sun</span> <span word="longer">longer</span> <span word="without">without</span> <span word="burning">burning</span>.</p><p> <span word="The">The</span> <span word="researchers">researchers</span> <span word="said">said</span> <span word="that">that</span> <span word="among">among</span> <span word="the">the</span> <span word="problems">problems</span> <span word="with">with</span> <span word="some">some</span> <span word="earlier">earlier</span> <span word="studies">studies</span> <span word="is">is</span> <span word="that">that</span> <span word="they">they</span> <span word="often">often</span> <span word="failed">failed</span> <span word="to">to</span> <span word="take">take</span> <span word="into">into</span> <span word="account">account</span> <span word="that">that</span> <span word="those">those</span> <span word="people">people</span> <span word="most">most</span> <span word="at">at</span> <span word="risk">risk</span> <span word="for">for</span> <span word="skin">skin</span> <span word="concer">concer</span>—<span word="people">people</span> <span word="with">with</span> <span word="fair">fair</span> <span word="skin">skin</span> <span word="and">and</span> <span word="freckles">freckles</span> （雀斑）,<span word="for">for</span> <span word="example">example</span>—<span word="are">are</span> <span word="more">more</span> <span word="likely">likely</span> <span word="to">to</span> <span word="use">use</span> <span word="sunscreen">sunscreen</span>. <span word="As">As</span> <span word="a">a</span> <span word="result">result</span>, <span word="it">it</span> <span word="may">may</span> <span word="appear">appear</span> <span word="that">that</span> <span word="sunscreen">sunscreen</span> <span word="users">users</span> <span word="get">get</span> <span word="cancer">cancer</span> <span word="more">more</span> <span word="often">often</span>.</p><p> <span word="The">The</span> <span word="studies">studies</span>, <span word="which">which</span> <span word="generally">generally</span> <span word="relied">relied</span> <span word="on">on</span> <span word="volunteers">volunteers</span> <span word="to">to</span> <span word="recall">recall</span> <span word="their">their</span> <span word="sunscreen">sunscreen</span> <span word="use">use</span>, <span word="were">were</span> <span word="also">also</span> <span word="unable">unable</span> <span word="to">to</span> <span word="prove">prove</span> <span word="how">how</span> <span word="well">well</span> <span word="the">the</span> <span word="products">products</span> <span word="had">had</span> <span word="been">been</span> <span word="applied">applied</span>, <span word="said">said</span> <span word="the">the</span> <span word="new">new</span> <span word="study">study</span>.</p>
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