欢迎来到上海新航道官网!英语高能高分,就上新航道!

4008-125-888

首页>sat>阅读>正文

2017.9.14最新SAT阅读真题+答案+解析

2017年09月15日 11:25来源:互联网作者:上海管理员

摘要:SAT阅读想要拿高分除了多阅读,还要多练习,多做题,今天上海SAT培训班小编要分享的是最新出来的SAT阅读真题,快来检测一下你最近的备考结果吧!

  SAT阅读想要拿高分除了多阅读,还要多练习,多做题,今天上海SAT培训班小编要分享的是最新出来的SAT阅读真题,快来检测一下你最近的备考结果吧!

  The recovery of southern sea otters appears tohave taken an upturn, according to results from theannual California sea otter survey released by theU.S. Geological Survey. Yet despite an overallincrease in sea otter abundance, sharks have been"taking a bite" out of the portion of the population that could fuel expansion into new areas.

  "There's much more to the story here than the main finding would suggest," said Dr. TimTinker, a research ecologist who leads the USGS sea otter research program. "We are lookinginto various factors that may be affecting the survey results, including a boom in urchinabundance from Big Sur to Monterey that may explain the uptick in numbers in the rangecenter, and high levels of shark bite mortality that are likely responsible for continued declinesat the north and south ends of the range."

  This year's survey results suggest an increasing trend over the last five years of almost 2percent per year and the population index, a statistical representation of the entirepopulation calculated as the three-year running average of census counts, has climbed to3,054 from 2,711 in 2010. The growth is accounted for by an unexpected jump in numbers inthe center of the sea otter's range, an area that spans from Monterey south to Cambria.

  While the population index continues to trend upward, the northern and southern subsets ofthe population continue a five-year decline, dropping 2 percent and 3.4 percent per year,respectively, numbers consistent with increased shark bite induced mortality in these sameareas.

  Since the 1980s, USGS scientists have computed the annual population index and evaluatedtrends in the southern sea otter, "Enhydra lutris nereis," a federally listed threatened speciesfound in California. For southern sea otters to be considered for removal from threatenedspecies listing under the Endangered Species Act, the population index would have to exceed3,090 for three consecutive years.

  Based on the passage and the graph, what can reasonably be inferred about predatoryshark activity in the south region?

  A.It steadily decreased between 2000 and 2003.

  B.It affected otters at a consistent rate between 2003 and 2006.

  C.It was more of a threat to sea otters in 2003 than in 2009.

  D.It was at its highest level in 2009.

上海新航道SAT培训班

  答案:C

  解析:

  Choice C is the best answer. The passage states thatpredatory shark activity has been affecting thesouthern sea otter population in the south subsetsof the coastal range. The graph shows that in thesouth region, there were approximately 400 southern sea otters in 2003 and roughly 700southern sea otters in 2009. Taken together, this information suggests that predatory sharkactivity was more of a threat to sea otters—and decreased their population more—in 2003than in 2009.

请加sunny老师(微信号:shnc2014

百人留学备考群,名师答疑,助教监督,分享最新资讯,领取独家资料。扫码免费加入

免费资料领取

热报课程

  • SAT系列课程
课程名称 班级人数 课时 学费 报名
SAT基础精讲班(争1200+分) 10-15人 72课时 ¥14800元 在线咨询
SAT精品强化班(争1300+分) 10-15人 72课时 ¥14800元 在线咨询
SAT精英冲刺班(争1400+,VIP铂金班) 3-6人 36课时 ¥16800元 在线咨询
SAT圣诞归国精英班 8-10人 76课时 ¥12800元 在线咨询
SAT香港考试团 3-4天 ¥5500元-6000元 在线咨询

免责声明
1、如转载本网原创文章,请表明出处;
2、本网转载媒体稿件旨在传播更多有益信息,并不代表同意该观点,本网不承担稿件侵权行为的连带责任;
3、在本网博客/论坛发表言论者,文责自负。

免费在线模考测试

姓名:

电话:

立即测试

制作:每每

旗舰校区:上海市徐汇区裕德路126号
电话:4008-125-888 传真:+021-61208858
版权所有:新航道(北京)管理咨询有限公司 京IPC备05069206