1.課前作業(yè)第三周

1、以下所有內(nèi)容，請計時 3 小時完成。With roughly 80,500 nonfatal gunshot injuries annually, a vast numberof Americans every year experience a verof Goddards worst day,according to the U.S. Centers for Disease Control and Prevention (CDC).“Doctors think we solved the leroblem because we took lead out ofpaand we took l

2、ead out of gas,” Goddard says. “But we still havethese very acute, very severe problems within a big population of thecountrya populationway.”ts already been victimized in a significantIn 2017, the CDC released itsreport linking lead toxicity to bulletfragments, which saideast 457 adult shooting sur

3、vivors testeditiven 2003for elevated blood lead levels from retained bullet fragments betand 2012. Its main source of data was the Adult Blood Leaddemiologyand Surveillance (ABLES) program, which requires labs and health careproviders in 41 participating ses to report blood leadlevel test results to

4、their respective health departments. The program requires ses to specifyt made itthe sourof lead exure, but many did not comply.imsible to measure the magnitude of the ie, and the true tally waslikely far highern 457, says CDCdemiologist Debora Weiss, thereports lead author.“Theres clearly sufficien

5、t researcht substantiates cause forconcern. Theres no doubt aboutt,” says Donald Smith, a professorof toxicology at the University of California, Santa Cruz, whose researchteam helped the se ban the use of lead ammunition byters. Whilestudying the effects of lead toxicity in California condors（）one

6、ofthe worlds largest birds threatened with extinctionthe researchersfound the creatures were dying in droves or being severely sickened fromleoisoning, primarily by eating the carcasses of animalsd beenshot with lead ammunition, but also by being shot with lead bulletsthemselves. “Take it from the c

7、ondors,” Smith says. “Embedded leadfrom ammunitiones significant toxic concerns.” （322 words）我看見過波瀾壯闊的大海，觀賞過水平如鏡的西湖，卻從沒看見過漓江這樣的水。漓江的啊，靜得讓你感覺不到它在流動；漓江的啊，清得可以看見的沙石；漓江的啊，綠得仿佛那是一塊無瑕的翡翠。船槳激起微波，擴散出一道道水紋，才讓你感覺到，船進，岸在后移。我攀登過峰巒雄偉的泰山，游覽過紅葉似火的香山，卻從沒看見過桂林這一帶的山。桂林的奇啊，一座座拔地而起，各不相連，像老人，像巨象，像駱駝，奇峰羅列，形態(tài)萬千；桂林的志合者，不以山海為遠；天高任鳥飛，海闊憑魚躍；一花獨放不是春，百花齊放春滿園。秀啊，像翠綠的屏障，像新生的竹筍，色彩明麗，倒映水中；桂林的 險啊，危