[外语类试卷]专业英语八级模拟试卷660及答案与解析.doc
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1、专业英语八级模拟试卷 660及答案与解析 SECTION A MINI-LECTURE Directions: In this section you sill hear a mini-lecture. You will hear the lecture ONCE ONLY. While listening, take notes on the important points. Your notes will not be marked, but you will need them to complete a gap-filling task after the mini-lecture.
2、 When the lecture is over, you will be given two minutes to check your notes, and another ten minutes to complete the gap-filling task on ANSWER SHEET ONE. Use the blank sheet for note-taking. 0 An Approach to Factual Writing I. The demands of differing nonfiction text Much of the research into the
3、development of childrens writing has tended to concentrate on personal and (1)_texts. Nonfiction writing often has been (2)_. II. Language of (3)_ A. Powerful forms of language -(4)_ Explanation Report Discussion B. (5)_ the childrens range of nonfictional writing. C. Spanning the joint-activity and
4、 independent activity phase. III. Writing frames A. The (6)_phase;where we offer our students strategies to aid writing but they can use without an adult being alongside them. B. Writing frames: A (n) (7)_outline: keywords or phrases Effects: a) Students become increasingly (8) _with unfamiliar genr
5、es. b) Students overcome many problems often associated with nonfictional writing. IV. The genres of writing frames in practical use A. The (9)_genre;encouraging the use of previous knowledge. B. The discussion genre;using a discussion frame. V. Significance (10)_learning suggests that learning is a
6、lways context dependent. The frame itself is not a purpose for writing. Writing frames are helpful to students of all ages and all abilities. SECTION B INTERVIEW Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Questions 1 to
7、 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions. Now listen to the interview. 11 Considering that the robbers _,this is quite a daring bank robbery. ( A) stole a Ford just outside the bank ( B) didnt cover the regi
8、stration plate of the car ( C) parked the car just outside the bank and robbed the bank in broad daylight ( D) abandoned the car after the robbery 12 The registration number of the car the robbers drove is _. ( A) BWA59CA or BWH59CH ( B) BWV593A or BWV593H ( C) BWA593 or BWH593 ( D) BWA59C or BWH59C
9、 13 Which of the following is TRUE? ( A) The robber fired a shot to make the customers lie on the floor. ( B) The robber fired the gun after he loaded it. ( C) The robber didnt fire the gun because it wasnt loaded. ( D) The robber didnt fire the gun although it may be loaded. 14 Which of the followi
10、ng is NOT TRUE? ( A) The police came after the manager pressed the alarm bell. ( B) The police came after one customer called for help. ( C) The police came and grabbed the scarf of the robber before he made his escape. ( D) The police came after the robbers made their escape. 15 Which of the follow
11、ing details does not match the description of the robber? ( A) Long hair. ( B) Tattered jeans. ( C) Broad shoulder. ( D) A sticking plaster on the face. SECTION C NEWS BROADCAST Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow
12、. At the end of each news item, you will be given 10 seconds to answer the questions. 16 U. S. officials have shut down websites that ( A) provide illegal film-viewing services. ( B) crack websites of banks and movie producers. ( C) cheat visitors of access fees to movies. ( D) offer free advertisin
13、g services to filmmakers. 16 In the 1960s scientists begin to recognize that environmental contaminants could not only affect the health and survival of individual animals but also alter the prospects for their off-spring and thereby potentially change the genetic makeup of entire populations. Resea
14、rchers were first altered to problems in wildlife in the 40s after the populations of eagles, falcons, and the other fish-eating birds in Britain plummeted. In nest after nest the birds eggshells were so thin that they cracked under the weight of the adults during incubation. In the 1960s David Peak
15、all and other wildlife toxicologists demonstrated that the accumulation of very high levels of such pesticides as DDT in the birds tissues had seriously impaired their productive capabilities. Some of these declines resulted in the complete disappearance of populations from large portions of their f
16、ormer range. In North America, for example, the eastern population of the peregrine falcon was virtually wiped out. More recently, the Golf Coast population of the brown pelican disappeared as a result of eggshell thinning thought to be caused by the organochlorine pesticides dieldrin and endrin. Si
17、nce then, researchers have provided additional evidence that environmental pollution can affect future generations. For example, exposure to high levels of PCBs has been shown to affect the learning and behavior of children. In the 1980s Snadra W. Jacobson and Joseph L. Jacobson of Wayne State Unive
18、rsity, Detroit, Michigan, studied a group of children whose mothers had eaten PCBcontained fish from Lake Michigan. The researchers found that the childrens prenatal exposure to these compounds resulted in neurological anomalies at birth and developmental delays in motor function during infancy. The
19、 Jacobson retested the children at age 11. In a 1996 report they noted that the children exhibited significantly poorer intellectual function, amounting to a 6.2 point deficit in the IQs of the most highly exposed subjects. Contaminants also have been linked to a critical loss of genetic variability
20、 in populations of living organisms. One of the best studies of this phenomenon was published in 1994 by M. H Murdoch and P.D.N. Hebert of the University of Guelph, Ontario. The study measured the variations in the mitochondrial DNA (mtDNA) of populations of brown bullhead catfish in the Great Lakes
21、, comparing bullheads from pristine reference areas with bullheads living in heavily contaminated with such pollutants as organochlorines and petrochemicals. The two researchers used one of the most powerful tools of modern molecular population genetics-molecular analysis of DNA. By revealing differ
22、ences in the specific code, i.e., in the sequence of nucleotides, contained in the DNA of a particular gene, the technique can help identify and quantify genetic variety within and among populations. For their study, Murdoch and Hebert examinated variations in genes of the cellular mitochondria, whi
23、ch possess their own DNA (mtDNA) that is distinct from the DNA found in the cell nucleus. Because mitochondrial genes are not “shuffled“ in the production of sperm and egg cells, as are nuclear genes, and because they are transmitted to offspring only by the mother, they are ideal for charting the r
24、elatedness and evolutionary history of spaces. The researchers found that although the numbers of fish were abundant in both types of sites, the levels of genetic variability were always significantly higher in the pristine areas. The most likely explanation is that bullheads populations in polluted
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- 外语类 试卷 专业 英语 模拟 660 答案 解析 DOC
