職稱英語等級考試?yán)砉B模擬試題(5)

1、職稱英語等級考試?yán)砉B模擬試題(5)難度B/A級Air Pollution Cloud Measured on Both Sides of PacificScientists watched closely last spring as a haze of pollution, which had been tracked by satellite as it crossed the Pacific Ocean , settled over a large swath of North America from Calgary, Canada Jnto Arizona .Now it app

2、ears that #for the first time, researchers on both sides of the Pacific took detailed measurements of the same plume ,a cloud that contained Gobi desert dust as well as hydrocarbons from industrial pollution Heather Price #a University of Washington doctoral student in chemistry, found that the amou

3、nt of light reflected by the particles in the air was more than 550 percent greater than normal for that time of year . The mass of Asian air contained elevated levels of all pollutants measured .Price said z but the only thing that came close to being alarming was the level of particulate Matter/Th

4、e haze that settled across the western part of the country was widely reported by the news media , and it was measured as far inland as the ski slopes of Aspen, Colo.Readings on the western side of the Pacific came from the Aerosol Characterization Experiments, a project aimed at understanding how p

5、articles in the atmosphere affect Earths climate. Additional measurements were taken in the same region at the same time under a project sponsored by the National Aeronautics and Space Administration Knowing the pollution was approach!ng Washington state , Price loaded sensing equipment aboard a ren

6、ted Beechcraft on April 1 4 and flew to Neah Bay on the states Northwest coast .Taking samples at various levels from 15 ,000 feet to 20 z 000 feet in altitude , she monitored quantities of dust z ozone , carbon monoxide and hydrocarbons . From my copilots seat the dust was thick eno ugh to see with

7、 the n aked eye Price said Now shes trying to correlate her findings with those of the two research teams operating on the other side of the Pacific z where at one point the pollution plume was larger than Japan The huge size of the cloud showed up clearly in satellite images that gave Price plenty

8、of warning the haze was on its way r,You can see these two blobs coming out of the deserts of Mongolia and growing over Asia , then getting swept out over the ocean and finally setting over North America/1she said. She intends to continue measuring air samples off the Washington coast and will be lo

9、oking for air masses with evidence of pollution originating somewhere other than Asia. nWed like to see if we can get a signature of pollution coming from Europe because computer models suggest that European sources also can be transported across the Pacific z n she said . However; we expect that so

10、urces in Europe will contribute less than Asian sources 練習(xí)：l.The haze of pollution mentioned in the first paragraph is a cloudA) of moisture over Calgary, Canada B) developing over Pacific Ocean C) of industrial pollutants .D) of desert dust and hydrocarbons 2.0ne of the Prices findings (Paragraph 2

11、)about the particles of the air is thatA) they contain more pollutants than normal particles B) they move much faster in high altitudes than in low altitudes C) they are finer and lighter than normal particles D) their ability to reflect light is much than stronger .3. What did Price not do during h

12、er research?A) She rented a Beechcraft .B) She used her sen sing equipment aboard the Beechcrah .C) She collected samples of pollutants on the Northwest coast for further tests D) She tested quantities of chemicals in the air 4. According to the last paragraph , which of the following statements abo

13、ut the two research teams is true?A) The two research teams whose findings Price correlates hers with are based in Asia .B) Price corrects some inaccurate data provided by the two teams operating in Asia C) Price is working with the two research teams in Japan D) The two teams in Asia volunteer to c

14、orrelate their findings with Prices .5. Which of the statements is closest in meaning to the sen tence. z we expect that sources in Europe will con tribute less than Asian sources ?A) Pollution is expected to be less serious in Europe than in Asia B) Pollution is studied in more depth in Europe than

15、 inAsia C) Pollutants coming from Europe are not the main source of pollution in North America E) Pollutants coming from Europe are the main source of pollution in North America .備注說明,非正文，實際使用可刪除如下部分。本內(nèi)容僅給予閱讀編輯指點：1、本文件由微軟OFFICE辦公軟件編輯而成，同時支持WPS。2、文件可重新編輯整理。3、建議結(jié)合本公司和個人的實際情況進(jìn)行修正編輯。4、因編輯原因，部分文件文字有些微錯誤的，請自行修正，并不影響本文閱讀。Note: it is not the text. The following parts can be deleted for actual use. This content only gives reading and editing instructions:1. This document is edited by Microsoft office office software and supports WPS2. The files can be edited and reorganized3. It i