单选题One of the important properties of a scientific theory is its ability to ______ further research and further thinking about a particular topic. A. invent B. stimulate C. renovate D. advocate

单选题{{B}}Text 1{{/B}} Six years later, in an about-face, the FBI admits that federal agents fired tear gas canisters capable of causing a fire at the Branch Davidian compound near Waco, Texas in 1993. But the law enforcement official said the firing came several hours before the structure burst into flames, killing 80 people including the Davidians' leader, David Koresh. "In looking into this, we've come across information that shows some canisters that can be deemed pyrotechnic in nature were fired—hours before the fire started," the official said. "Devices were fired at the bunker, not at the main structure where the Davidians were camped out." The Federal Bureau of Investigation maintains it did not start what turned to be a series of fiery bursts of flames that ended a 51-day standoff between branch members and the federal government. "This doesn't change the bottom line that David Koresh started the fire and the government did not," the official said. "It simply shows that devices that could probably be flammable were used in the early morning hours." The law enforcement official said the canisters were fired not at the main structure where the Davidian members were camped out but at the nearby underground bunker. They bounced off the bunkers concrete roof mad landed in an open field well, the official said. The canisters were fired at around 6 a.m., and the fire that destroyed the wooden compound started around noon, the official said. The official also added that other tear gas canisters used by agent that day were not flammable or potentially explosive. While Coulson denied the grenades played a role in starting the fire, his statement marked the first time that any U. S. government official has publicly contradicted the govemment's position that federal agents used nothing on the final day of the siege at Waco that could have sparked the fire that engulfed the compound. The cause of the fiery end is a major focus of an ongoing inquiry by the Texas Rangers into the Waco siege.

单选题Though this book was written more than 50 years ago, it has a relatively contemporary appeal, and its ______ plotting will amuse mystery lovers. A. intricate B. disparate C. compassionate D. passionate

单选题Dominic, the most ______ pupil in class, will go to Harvard to study this September.

单选题In her description of the brain as an interpreter of message from the nervous system, Henderson cautioned that interpreters, however proficient, are fallible and can______ communications.

单选题Television—that most pervasive (遍布的) and persuasive of modern technologies, marked by rapid change and growth—is moving into a new era, an era of extraordinary sophistication and versatility, which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possible by the marriage of television and computer technologies. The word "television", derived from its Greek (tele: distant) and Latin (vision: sight) roots, can literally be interpreted as sight from a distance. Very simply put, it works in this way: through a sophisticated system of electronics, television provides the capability of converting an image (focused on a special photoconductive plate within a camera) into electronics impulses, which can be sent through a wire or a cable. These impulses, when fed into a receiver (television set), can then be electronically reconstituted into that same image. Television is more than just an electronics system, however. It is a means of expression, as well as a vehicle for communication, and as such becomes a powerful tool for reaching other human beings. The field of television can be divided into two categories determined by its means of transmission. First, there is broadcast television, which reached the masses through broad-based airwave transmission of television signals. Second, there is non-broadcast television, which provided for the needs of individuals or specific interest groups through controlled transmission techniques. Traditionally, television has been a medium of the masses. We are most familiar with broadcast television because it has been with us for thirty-seven years in a form similar to what exists today. During those years, it has been controlled, for the most part, by the broadcast networks, ABC, NBC, and CBS, who have been the major purveyors (传播者) of the news, information and entertainment. These giants of broadcasting have not only shaped television but our perception (感觉) as well. We have come to look upon the picture tube as a source of entertainment, placing our role in this dynamic medium as the passive viewer.

单选题He gave me a lot of help in my work. so I have to ______ my success to him.

单选题By advocating that parents act rudely, the author means that parents______.

单选题They have always regarded a man of ______ and fairness as a reliable friend. [A] robustness [B] temperament [C] integrity [D] compactness

单选题In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it " protecting civilization from the faces of terror". The company's share price skyrocketed, as did the stocks of other face-recognition companies, and airports across the globe began installing the software and running trials. As the results start to come in, however, the gloss(光滑表面)is wearing off. No matter what you might have heard about face-recognition software, Big Brother it ain't. The concern was based largely on an independent assessment of face-recognition systems carried out in 2000 in the U. S. by the Department of Defense. These tests found that to catch 90 percent of suspects at an airport, face-recognition software would have to raise a huge number of false alarms. One in three people would end up being dragged out of the line and that's assuming everyone looks straight at the camera and makes no effort to disguise himself. Results from the recent airport trials would seem to justify that concern. Most face-recognition systems use some kind of geometric technique to translate a picture of a face into a set of numbers that capture its characteristics. Once it has identified these boundaries, the software calculates their relative sizes and positions and converts this geometry into what Visionics calls a "faceprint". Feed the software a series of mug-shots(通缉犯), and it'll calculate their faceprints. Then it can monitor live CCTV images for the faces of known suspects. When it finds a match, it raises an alarm. Even if the system does manage to capture a face, the problems aren't over. The trouble is that a suspect's faceprint taken from live CCTV is unlikely to match the one in the database in every detail. To give themselves the best chance of picking up suspects, operators can set the software so that it doesn't have to make an exact match before it raises the alarm. But there's a price to pay: the more potential suspects you pick up, the more false alarms you get. You have to get the balance just right. Despite the disappointing tests, some people insist that face-recognition technology is good enough to put terrorists off. After all the claims and counter-claims, with no one able to discern(洞察)the truth, the industry may soon have to face up to reality.

单选题Which of the following was the cause of cold weather in England from 1815 to 1818?

单选题We can conclude from this passage that ______.

单选题The Prime Minister refused to ______ on the rumour that he had planned to resign.

单选题Now, as our urban areas (sink ever deeper) into drug-produced crime, death (from) the illicit use of unregulated and dangerous drugs (following) death, (that) becomes vital for the parents, teachers, and advisors of our youth to have as wide an understanding of these problems as possible.

单选题In the______of the project not being a success, the investors stand to lose up to ﹩30 million.

单选题The discrepancy in the company accounts is ______ so that no auditor could have failed to notice it. [A] spontaneous [B] conspicuous [C] notorious [D] superfluous

单选题What things in life aye you most desirous ______ attaining?