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Consider this syntax： MERGE INTO t1 USING t2 ON （join predicate）….. What does the MERGE syntax do？（）
A . It performs a merge join of the row from T2 only if it doesn’t exist in the T1 table.
B . It creates a natural join of tables T1 and T2 for all columns that have the same name.
C . It creates a Cartesian product of table T1 and table T2 for all columns that have the same name.
D . For each row from T2, it updates the row if it exists within table T1, otherwise it inserts the row into T1.
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参考如下的 Web.config 文件，请问，myPredicate.Predicate 方法返回值是什么类型？（）https://assets.asklib.com/images/image2/201807271053231080.jpg
A . string
B . void
C . object
D . boolea
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The part of a sentence which compriese comprises an infinite verb or a verb phrase is grammatically called predicate.
A . 正确
B . 错误
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“It is raining hard” is a one-place predication sentence.
A . 正确
B . 错误
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Decide the following statement true or false and put the mark √ for true or × for false. 1.( ) Clauseis a group of phrases organized into a construction of “subject + predicate ”
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The predicate consists of a verb and its modifiers or complements. It tells what the subject is or does.
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“The one thing that reading a book or talking to someone cannot do is to provide you with the experience of wandering Paris by foot.” What is the predicate verb(谓语动词） of the sentence?
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Which of the following italicized phrases indicates a subject-predicate relation(主谓关系)？
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Have scientists found of water on Mars?
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Mny high school studentsre determined to become scientists.RightB．WrongCMny high school studentsre determined to become scientists.Right B．Wrong C．Not mentioned
A．Right
B．Wrong
C．Not mentioned
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Which of the following sentences is a two-place predicate？
A．It is snowing.
B．The baby is sleeping.
C．John gave Mary a book.
D．Jack loves Mary.
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Scientists Worry Machines May Outsmart Man
A robot that can open doors and find electrical outlets to recharge itself. Computer viruses that no one can stop. "Predator" fighters, which, though still controlled remotely by humans, come close to a machine that can kill autonomously.
Impressed and alarmed by advances in artificial intelligence, a group of computer scientists is debating whether there should be limits on research that might lead to loss of human control over computer-based systems that carry a growing share of society's workload, from waging war to chatting with customers on the phone.
Their concern is that further advances could create profound social disruptions and even have dangerous consequences.
As examples, the scientists pointed to a number of technologies as diverse as experimental medical systems that interact with patients to simulate sympathy, and computer worms and viruses that defy extermination (消灭) and could thus be said to have reached a "cockroach" stage of ma chine intelligence.
While the computer scientists agreed that we are a long way from Hal, the computer that took over the spaceship in "2001: A Space Odyssey," they said there was legitimate concern that technological progress would transform. the work force by destroying a widening range of jobs, as well as force humans to learn to live with machines that increasingly copy human behaviors.
The researchers—leading computer scientists, artificial intelligence researchers and roboticists who met at the Asilomar Conference Grounds on Monterey Bay in California—generally dismissed the possibility of highly centralized superintelligences and the idea that intelligence might spring spontaneously from the Internet. But they agreed that robots that can kill autonomously are either already here or will be soon.
They focused particular attention on the specter that criminals could exploit artificial intelligence systems as soon as they were developed. What could a criminal do with a speech synthesis system that could disguise as a human being？ What happens if artificial intelligence technology is used to mine personal information from smart phones？
The researchers also discussed possible threats to human jobs, like self-driving cars, software based personal assistants and service robots in the home. Just last month, a service robot developed by Willow Garage in Silicon Valley proved it could navigate the real world.
A report from the conference, which took place in private on Feb.25, is to be issued later this year. Some attendees discussed the meeting for the first time with other scientists this month and in interviews.
The conference was organized by the Association for the Advancement of Artificial Intelligence (A.A.A.I.), and in choosing Asilomar for the discussions, the group purposefully evoked a landmark event (里程碑式事件) in the history of science. In 1975, the world's leading biologists also met at Asilomar to discuss the new ability to reshape life by swapping genetic material among organisms. Concerned about possible biohazards and ethical questions, scientists had halted certain experiments. The conference led to guidelines for recombinant DNA research, enabling experimentation to continue.
The meeting on the future of artificial intelligence was organized by Eric Horvitz, a Microsoft researcher who is now president of the association.
Dr. Horvitz said he believed computer scientists must respond to the notions of superintelligent machines and artificial intelligence systems run amok (横行).
The idea of an "intelligence explosion" in which smart machines would design even more intelligent machines was proposed by the mathematician I.J.Good in 1965. Later, in lectures and science fiction novels, the computer scientist Vernor Vinge popularized the notion of
A．robots for civil use
B．military computers
C．artificial intelligence
D．biochemical weapons
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听力原文： Scientists say sharks have lived in the world's oceans for millions of years. Scientists say there are more than 350 different kinds of sharks.
Sharks do not have bones, and a shark has an extremely good sense of smell. It can find. small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. Sharks also sense electrical and magnetic power linked to nerves and muscles of living animals. These powerful senses help them find their fond. Some sharks will eat just about anything. Many unusual things have been found in the stomachs of some large sharks. They include shoes, dogs, a cow's foot and metal protective clothing.
About forty percent of the different kinds of sharks lay eggs. The others give birth to live young. Some sharks carry their young inside their bodies like humans do.
Scientists are beginning to understand the importance of sharks to humans. Medical researchers want to learn more about the shark's body defense system against disease. They know that sharks recover quickly from injuries. Sharks appear never to suffer infections, cancer or heart diseases.
What is this passage mainly about？
A．The necessity of protecting sharks.
B．The living environment of sharks.
C．The dangers of sharks to human beings.
D．An introduction to sharks.
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What do scientists think of dreams Many scientists believe that dreams are ______.What do scientists think of dreams Many scientists believe that dreams are ______.
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P（n) is the predicate ’if 4 divides n then 2 divides n’. What is the truth value of P？（）
A、10
B、F
C、T
D、None of the above
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Scientists have discovered a genetic defect that a...
Scientists have discovered a genetic defect that appears to cause deficit-hyperactivity disorder, more commonly known as hyperactivity. People afflicted with this disorder have trouble focusing their attention and controlling impulses, and tend to be rest-less and aggressive. The defect occurs in a gene that regulates the body's use of the thyroid hormone. This finding was made in continuing study organized by the National Institute of Diabetes and Digestive and Kidney Diseases in which 70 percent of children inheriting the gene were hyperactive while only 20 percent of the children not inheriting the gene were hyperactive. And although the researchers admit that this defective gene probably accounts for only a fraction of cases of hyperactivity, this discovery will allow doctors to spot newborn babies likely to have the disorder, and also to provide clues for its cause and treatment.
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One day when the famous American scientist Addison was on his way home, a young man stopped him and required to have a word with him. Addison accepted his request.
The young man asked, "How, Mr. Addison, can you invent so many things and achieve your fame？"
The scientist said, "It seems that you have been thinking of becoming famous every day."
The young man nodded, "Yes. I have been dreaming of being a person as notable as you. Every minute I am thinking of how to become reputable. I don' t know when I can achieve my fame."
Addison told him, "Don't worry, young man. If you want to be a famous man this way, you will have to wait until you die!"
"Why should I？" the young man was puzzled.
Addison said, "What you dream is actually a high building. You never think of how to build it with bricks. Thus the building will never come into reality. However, your story can serve as a mirror. People will remember you because of your illness and laziness. They will often speak of your name while they give warnings to their children. Aren't you a notorious person by then？"
What happened to Addison when he was on his way home？
A．A beggar stopped him
B．A robber stopped him
C．A man wanted to speak to him
D．A man wanted to have words with him
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In terms of solving their problems, social scientists encounter greater resistance than physical scientists.
A．在解决问题时，科学家比物理学家还要有更大的阻力。
B．为了解决问题，社会学家同物理学家一起遇到了相当大的阻力。
C．在探索如何解决他们的问题时，社会科学家比物理学家有了更伟大的发现。
D．说到解决问题，社会学家比物理学家遇到的阻力更大。
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What makes scientists more concerned about "energy blend"？
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Scientists discovered that atoms of some substances are radioactive. This means that they are unstable and can be split. The chain of splitting atoms releases great destructive energy and it was this discovery which led scientists to develop the idea of an atomic bomb. The American government secretly worked to produce such a bomb and the first version was much more powerful than anyone had thought.
By this time, the World War II had ended in Europe. But the Japanese refused to surrender, the Americans decided that by dropping an atomic bomb on Japan, they could end the war quickly and save more of their soldier’s lives.
Soon after midnight on 6 August 1945, a bomb was dropped on the city of Hiroshima, a civilian target. No warning was given and there was total devastation. Almost all the buildings were destroyed and more than 100000 people died or were horribly wounded.
The Japanese military still did not want to surrender so three days later, the Americans dropped a second atomic bomb on the city of Nagasaki, killing 45000 people. The Japanese government was discussing ending the war when they heard the news of Nagasaki. Finally, they surrendered and the World War II came to an end.
At first, the scientists who had built the bomb were pleased that it had helped to end the war. However, many would come to realize that they had helped to create the most terrible weapon known to man.
The first atomic bomb ______.
A．was less powerful
B．was dropped in Nagasaki
C．was a failure
D．was tested in desert
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Some scientists doubted 查看材料
A.if the Gardeners"argument was sound
B.because she was cleverer than other chimps
C.when she wanted to eat
D.while she was at a research center in Ellensburg
E.because she could use sign language to ask for fruits
F.while Washoe was learning sign language
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Too much metal in the soil is considered pollution. Yet too little metal in a person's diet can cause health problems. An American scientist says the answer to both problems may be plants that take up large amounts of metal in their tissues.
David Salt is an expert on plants at Purdue University in West Lafayette, Indiana. He is working with plants that store large amounts of metals.
In recent years, scientists have shown interest in using such plants to clean up harmful waste materials. Professor Salt says such plants also could be used to improve people's diets or even to create foods that fight cancer.
Humans need a number of metals in their diets, including iron and zinc. These metals are needed in very small amounts, however. That is why they are called micronutrients. The lack of micronutrients is blamed for health problems in many developing countries. Children and pregnant women are mostly affected.
Recently, Mr. Salt announced that he has identified and copied the genes from a kind of plant that stores metals in its tissues. He says his study suggests it may be possible to develop plants that contain minerals needed for good health.
For example, the metal selenium is a strong anti-cancer agent. Some wild plants store selenium naturally. Mr. Salt says foods to fight cancer might be created if genes from these plants could be moved into crop plants.
Locoweed, which is a common plant in the western U.S., stores selenium. Professor Salt says it may be possible to create cancer-fighting foods from it. He and scientists from a company called Unicycle Therapies have copied the gene that causes locoweed to take up selenium from the soil.
Many people take pills to add important minerals or vitamins to their diet. However, Mister Salt notes that most selenium products sold in health food stores are of little use. That is because the human body can only take in and use selenium if it is in the right chemical form.
The scientist says his team would like to develop a vegetable crop high in selenium. He wants to create an anti-cancer product in the foods we already eat.
According to Pro. Salt, plants that take up large amounts of metal in their tissues can be used to ______.
A．clean polluted soil and cure disease like cancer
B．clean up harmful waste materials in soil and improve people's diet
C．produce large number of micronutrients such as iron and zinc
D．create food with important minerals or vitamins
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The project was predicated on the ____ that the economy was expanding.
A produceB assumptionC fateD think
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Many scientists have been probingpsychological problems（）
A．solving
B．exploring
C．settling
D．handling
