单选题Lebanon is one of the few countries in the Middle East with a comparatively well- developed labour movement. Trade unions have secured some tangible gains, such as fringe benefits and better working conditions.

单选题The Pakistani president, Gen. Pervez Musharraf, announced here today that a delegation of Pakistani officials would fly to the Taliban's headquarters in the southern Afghan city of Kandahar Monday to renew demands that the militia surrender Saudi fugitive Osama bin Laden. U. S. officials have named bin Laden, who has been given shelter by the Taliban rulers in Afghanistan, as the prime suspect in Tuesday's terrorist attacks in Washington and New York. "We are aware of the gravity of the situation and know that in the lives of, nations, such situations do arise that require making important decisions," Musharraf said at a meeting with Pakistani newspaper editors. The Taliban's leader, Mohammad Omar, has refused to give up bin Laden, claiming he is not responsible for the U. S. attacks. "The Pakistan government is leaning on the Taliban government to hand over Osama to save this entire region from catastrophe," said Najam Sethi, editor of the weekly newspaper Friday Times, who participated in the meeting with Musharraf. "I am not sure whether there is much chance of that happening, but the pressure is on from the Pakistan government." Pakistan has been a key supporter of the Taliban, which controls more than 90 percent of Afghanistan and has enforced a strict interpretation of Islamic law in the country. Omar, the Taliban leader, today convened an emergency meeting of clerics (圣职人员) in the Afghan capital, Kabul. "As regards the possible attack by America on the sacred soil of Afghanistan, veteran honorable clerics should come to Kabul for a sharia decision," Omar said in a statement broadcast on the Taliban's Radio Shariat today. Sharia is Islamic law. Omar, who reportedly left Ms Kandahar headquarters several days ago in anticipation of a U. S. attack, asked Afghans to pray and read the Koran to meet what he called a "test", according to the statement. He indicated he would not attend the meeting of clerics, though he reportedly met with a small group of senior clerics today. The Pakistan-based Afghan Islamic Press reported today it had received a statement from Bin Laden, dispathed by an aide from an undisclosed location in Afghanistan, in which he denied involvement in last week's attacks on the World Trade Center and the Pentagon. "I am residing in Afghanistan," the statement said. "I have taken an oath of allegiance to Omar, which does not allow me to do such things from Afghanistan. We have been blamed in the past, but we were not involved./

单选题They are ______to industrialists, who need the valuable copper and nickel in them.(2003年南开大学考博试题)

单选题Your failure in the final examination is due to the fact that you didn't______ enough importance to your English.

单选题She sounded so_____that everyone present believed her story.

单选题The title that best expresses the main idea is ______.

单选题At home Theodore Roosevelt had affection, not compliments, whether these were unintentional and sincere or were thinly disguised flattery. And affection was what he most craved from his family and nearest friends, and what he gave to them without stint. As I have said, he allowed nothing to interrupt the hours set apart for his wife and children while he was at the White House; and at Oyster Bay there was always time for them. A typical story is told of the boys coming in upon him during a conference with some important visitor, and saying reproachfully, "It's long after four o'clock, and you promised to go with us at four. "" So I did," said Roosevelt. And he quickly finished his business with the visitor and went. When the children were young, he usually saw them at supper and into bed, and he talked of the famous pillow fights they had with him. House guests at the White House some times unexpectedly caught sight of him crawling in the entry near the children' s rooms, with two or three children riding on his back. Roosevelt's days were seldom less than fifteen hours long, and we can guess how he regarded the laboring men of today who clamor for eight and six, and even fewer hours, as the normal period for a day' s work. He got up at half-past seven and always finished breakfast by nine, when what many might call the real work of his day began. The unimaginative laborer probably supposes that most of the duties which fall to an industrious President are not strictly work at all; but if any one had to meet for an hour and a haft every forenoon such Congressmen and Senators as chose to call on him, he would understand that that was a job involving real work, hard work. They came every day with a grievance, or an appeal, or a suggestion, or a favor to ask, and he had to treat each one, not only politely, but more or less differently. Early in his Administration I heard it said that he offended some Congressmen by denying their requests in so loud a voice that others in the room could hear him, and this seemed to some a humiliation. President McKinley, on the other hand, they said, lowered his voice, and spoke so softly and sweetly that even his refusal did not jar on his visitor, and was not heard at all by the bystanders. If this happened, I suspect it was because Roosevelt spoke rather explosively and had a habit of emphasis, and not because he wished in any way to send his petitioner's rebuff through the room. Nor was the hour which followed this, when he received general callers, less wearing. As these persons came from all parts of the Union, so they were of all sorts and temperaments. Here was a worthy citizen from Colorado Who, on the strength of having once heard the President make a public speech in Denver, claimed immediate friendship with him. Then might come an old lady from Georgia, who remembered his mother' s people there, or the lady from Jacksonville, Florida, of whom I have already spoken. Once a little boy, who was almost lost in the crush of grown-up visitors, man- aged to reach the President. "What can I do for you?" the President asked; and the boy told how his father had died leaving his mother with a large family and no money, and how he was selling typewriters to help support her. His mother, he said, would be most grateful if the President would accept a typewriter from her as a gift. So the President told the little fellow to go and sit down until the other visitors had passed, and then he would attend to him. No doubt, the boy left the White House well contented--and richer.

单选题The attempt and offer to carry out cloning experiment on human being is blameworthy and can hardly find any ______ among the public not only in our country but also in most of the countries in the world.

单选题A rogue loose called a hacker could take control of the entire system by implanting his own instructions in the software and then he could program the computer to erase any sign______.

单选题In order to earn stronger support, the candidate claimed that the new law would al- low more women and disabled people to enter the ______ of American life.

单选题When the concentration of calcium in the blood is too low, the parathyroid glands began to secrete the hormone parathormone.

单选题Project Hond Start which was {{U}}inaugurated{{/U}} in the United States in 1965 is a federally funded preschool for economically and culturally disadvantaged children.

单选题A UN official said that aid programs would be ______ until there was adequate protection for relief convoy.(2005年电子科技大学考博试题)

单选题Using many symbols makes ______ to put a large amount of information on a single map.

单选题What if our society uses new-found technologies of "genetic engineering" to interfere with the biological nature of human beings? Might that not be disastrous? What about cloning, for instance? Cloning is a term originally used in connection with nonsexual reproduction of plants and very simple animals. Now it is coming into use in connection with higher animals, since biologists are finding ways of starting with an individual cell of a grown animal and inducing it to multiply in the same way in the future. But is cloning a safe thing to unleash on society? Might it not be used for destructive purposes? For instance, might not some ruling group decide to clone their submissive, downtrodden peasantry, and thus produce endless hordes of semi-robots who will slave to keep a few in luxury and who may even serve as endless ranks of soldiers designed to conquer the rest of the world? A dreadful thought, but an unnecessary fear. For one thing, there is no need to clone for the purpose. The ordinary method of reproduction produces all the human beings that are needed and as rapidly as is needed. Right now, the ordinary method is producing so many people as to put civilization in danger of imminent destruction. What more can cloning do? Secondly, unskilled semi-robots cannot be successfully pitted against the skilled users of machine, either on farms, in factories or in armies. Any nation depending on downtrodden masses will find itself an easy mark for exploitation by a less populous but more skilled and versatile society. This has happened in the past often enough. But even if we forget about self-hordes, what about the cloning of a relatively few individuals? There are rich people who could afford the expense, or politicians who could have the influence for it, or the gifted who could undergo it by popular demand. There can be two of a particular banker or governor or scientist—or three—or a thousand. Might this not create a kind of privileged caste, who would reproduce themselves in greater and greater numbers, and who would gradually take over the world? Before we grow concerned about this, we must ask whether there will really be any great demand for cloning. Would you want to be cloned? The new individual that is formed by your cell will have your genes and therefore your appearance and, possibly, talents, but he will not be you. The clone will be, at best, merely your identical twin. Identical twins share the same genetic pattern, but they each have their own individuality and are separate persons. Cloning is not a pathway to immortality, then, because your consciousness does not survive in your clone, any more than it would in your identical twin if you had one. In fact, your clone would be far less than your identical twin. What shapes and forms a personality is not genes alone, but all the environment to which it is exposed. Identical twins grow up in identical surroundings, in the same family, and under each other"s influence. A clone of yourself, perhaps thirty or forty years younger would grow up in a different world altogether and would be shaped by influences that would be sure to make him less and less like you as he grows older. He may even earn your jealousy. After all, you are old and he is young. You may once have been poor and struggled to become well-to-do, but he will be well-to-do from the start. The mere fact that you won"t be able to view him as a child, but as another competing and better-advantaged you, may accentuate the jealousy. No! Imagine that, after some initial experiments, the demand for cloning will be virtually nonexistent.

单选题Theinventionofthetelephonewasagreat____tocommunication.

单选题A(An) ______ is a person who knows a great deal about a particular subject and whose advice on it may be taken by others.

单选题You are exposed to obtrusive ads that ______ seemingly from nowhere even when you are disconnected from the Net, and your personal information gathered and sent off without you being aware of it.

单选题A fourth grader can work at a fifth-grade level in math and a third-grade level in English without the stigma associated with being left back or the pressures of being skipped ahead.