单选题The workers marched in______ to the minister's office.

单选题从下面的答案中，选出应填入下面叙述中______内的最确切的解答。 Network managers have long (1) practical voice-over-IP (VOIP) solutions. VOIP (2) ease network management and decreases costs by converging a companys telephony and data infrastructures into one network. And a VOIP solution implemented at a companys head-quarters with far-reaching branch offices can (3) tremendous amounts of (4) in long distance phone bills, provided that solution delivers POTS-Iike voice (5) over the Internet.

单选题I know the difference between these two words. So ______ they. A. know B. will C. do D. does

单选题The teacher spoke highly of such ______ as loyalty, courage and truthfulness shown by his students. [A] virtues [B] features [C] properties [D] characteristics

单选题They started off at about 5 o'clock in the morning. They______there by now.

单选题He's ______ by the news that I didn't know what to say.

单选题The preparation of a Broadway show is mentioned in order to ______.

单选题China ______ greatly in terms of its cultural values over the past five years.

单选题Potentially offering a powerful new tool against terrorism, researchers have found a novel way to detect deception: in the liar's blushing face. The technique, described in the journal, Nature, uses a thermal camera to detect sudden, involuntary shifts of blood flow in the face. The system performed as accurately as a traditional polygraph, the scientists report. Yet the camera can provide answers instantly, and does not require a highly trained specialist to operate it or interpret its results. This makes it far better suited than the polygraph for a new, high-tech approach to security that is already raising the hackles of civil libertarians: the screening of large numbers of citizens, at airports and other sensitive areas, who have done nothing wrong. "The next decade is going to see the development of truly accurate lie detectors, "said Stephen M. Kosslyn, an expert on detecting lies and a professor of psychology at Harvard University. The prototype, built by researchers at the Mayo Clinic and Honeywell Laboratories in Minnesota, is at least 2 years from being ready for general use. But other scientists said the discovery of previously unknown physiological changes in the face was itself an important step forward. "This is potentially very important work, which may open a new window on the mind, "said Kosslyn. Pushed by technological advances, and with fresh interest since Sept. 11, the discovery is part of a boom in the scientific study of deceit and its detection. Although the lie remains a mysterious phenomenon, researchers in recent years have found a number of new approaches that might replace the polygraph, from brain scans, to subtle changes in eye movement, to sparks of electrical activity that signal a person has seen a victim or a crime scene before. The new finding, though, is remarkable for its simplicity. When a person tells a lie, the team found, there is a sudden rush of blood to the area around the eyes, according to the Mayo Clinic's Dr. James A. Levine. Although the change is not ordinarily visible the blood warms the skin, causing bands of color to appear through a camera sensitive to heat. The team devised a computer program that can identify the telltale changes based on the camera images. In testing at the US Departmeot of Defense Polygraph Institute, which trains federal polygraph examiners, the device performed better than polygraphs, with 85 percent accuracy compared with 70 percent for the polygraph.

单选题电视的声音主要包括( )、音响、音乐三大类别。

单选题All the rooms on the second floor have nicely ______ carpets, which are included in the price of the house.(2007年中南大学考博试题)

单选题Hardly______making the speech when the people stood up applauding.

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单选题The International Monetary Fund is irrelevant to this crisis the Group of Seven leading industrial countries lacks legitimacy in a world where China, Brazil and other are big players the Bank for international settlement has no operational role.