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1、2022年考博英语-北京航空航天大学考试题库及全真模拟冲刺卷（含答案带详解）1. 单选题They tossed your thoughts back and forth for over an hour, but still could not make（ ）of them.问题1选项A.impressionB.comprehensionC.meaningD.sense【答案】D【解析】固定搭配。句意：他们反复考虑了你的观点长达一个多小时，但是仍然不能（ ）它们。impression印象；comprehension理解；meaning意思；sense感觉；观念；道理；理智。make sense
2、 of为固定搭配，意为 “理解”。2. 单选题Very few people understood his lecture, the subject of which was very（ ）.问题1选项A.intelligibleB.obscureC.dimD.conspicuous【答案】B【解析】形容词辨析。句意：很少有人能理解他的演说，内容太 。intelligible可理解的，明白易懂的；obscure晦涩的，昏暗的；dim暗淡的，模糊的；conspicuous显著的，出众的。句子前半句说“很少有人能理解他的演说”，由此推断，B项符合句意。3. 单选题A controversy eru
3、pted in the scientific community in early 1998 over the use of DNA ( deoxyribo-nucleic acid) fingerprinting in criminal investigations. DNA fingerprinting was introduced in 1987 as a method to identify individuals based on a pattern seen in their DNA, the molecule of which gene are made. DNA is pres
4、ent in every cell of the body except red blood cells. DNA fingerprinting has been used successfully in various ways, such as to determine paternity where it is not clear who the fa- ther of a particular child is. However, it is in the area of criminal investigations that DNA fingerprint- ing has pot
5、entially powerful and controversial uses.DNA fingerprinting and other DNA analysis techniques have revolutionized criminal investigations by giving investigators powerful new tools in the attempt to prove guilt, not just establish innocence. When used in criminal investigations, a DNA fingerprint pa
6、ttern from a suspect is compared with a DNA fingerprint pattern obtained from such material as hairs or blood found at the scene of a crime. A match between the two DNA samples can be used as evidence to convict a suspect.The controversy in 1998 stemmed from a report published in December 1991 by po
7、pulation genet- icists Richard C. Lewontin of Harvard University in Cambridge, Mass. , and Daniel L. Hartl called into question the methods to calculate how likely it is that a match between two DNA fingerprints might occur by chance alone. In particular, they argued that the current method cannot p
8、roperly de- termine the likelihood that two DNA samples will match because they came from the same individual rather than simply from two different individuals who are members of the same ethnic group. Lewontin and Hartl called for better surveys of DNA patterns methods are adequate.In response to t
9、heir criticisms, population geneticists Ranajit Chakraborty of the University of Texas in Dallas and Kenneth K. Kidd of Yale University in New Haven, Conn. , argued that enough data are already available to show that the methods currently being used are adequate. In January 1998, however, the Federa
10、l Bureau of Investigation and laboratories that conduct DNA tests an- nounced that they would collect additional DNA samples from various ethnic groups in an attempt to resolve some of these questions. And, in April, a National Academy of Sciences called for strict standards and system of accreditat
11、ion for DNA testing laboratories.1.Before DNA fingerprinting is used, suspects（ ）.2.DNA fingerprinting can be unreliable when（ ）.3.To geneticists like Lewontin and Hartl, the current method（ ） .4.The attitude of the Federal Bureau of Investigation shows that（） .5.National Academy of Sciences holds t
12、he stance that（ ） .问题1选项A.would have to leave their fingerprints for further investigationsB.would have to submit evidence for their innocenceC.could easily escape conviction of guiltD.could be convicted of guilt as well问题2选项A.the methods used for blood-cell calculation are not accurateB.two differe
13、nt individuals of the same ethnic group may have the same DNA fingerprinting pat-ternC.a match is by chance left with fingerprints that happen to belong to two different individualsD.two different individuals leave two DNA samples问题3选项A.is not so convincing as to exclude the likelihood that two DNA
14、samples can never come from two individualsB.is arguable because two individuals of the same ethnic group are likely to have the same DNA patternC.is not based on adequate scientific theory of geneticsD.is theoretically contradictory to what they have been studying问题4选项A.enough data are yet to be co
15、llected from various ethnic groups to confirm the unlikelihood of two DNA samples coming from two individual membersB.enough data of DNA samples should be collected to confirm that only DNA samples from the same person can matchC.enough data are yet to be collected from various ethnic groups to determine the likelihood of two different DNA samples coming from the same personD.additional samples from various ethnic groups should be collected to determine that two DNA samples are unlikely to come from the same person问题5选项A.DNA testing should be systemat
