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海关实行高度集中统一的管理体制和垂直领导方式，海关机构的设置为海关总署、直属海关、隶属海关和海关办事处四级。 ( )
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当一个Web站点利用lis建立在NTFS分区时，限制用户访问站点资源的4种方法是：IP地址限制、______验证、Web权限和NTFS权限。
The 1990s have been designated the Decade Against Drug Abuse by the United Nations. But, (1) less than three years to go before the end of the decade, governments and health organizations (2) that they have made (3) progress in reducing drug, alcohol and tobacco abuse. Today, consumption of all these substances is increasingly steadily worldwide. (4) every country now has problems with (5) drugs. And the world is producing and consuming more alcohol and tobacco than ever. Between 1970 and 1990 beer production (6) rose by over 80 per cent. And, (7) the number of smokers keeps on (8) ,by the second or third (9) of the next century there could be 10 million deaths each year (10) smoking related illnesses.Drugs are also a huge burden (11) the world economy. In the United States, for example, it’s estimated that alcohol and illegal drug use costs the country tens of billions of dollars each year, mainly (12) health care. When the cost of tobacco related illnesses is added, (13) total more than doubles.Drugs are also closely (14) crime. Many police forces no longer (15) between illegal and legal drugs when fighting crime. In Australia, for example, experts (16) that police in some parts of the country spend between 70 and 80 per cent of their time dealing with alcohol-related incidents.One explanation for the increase in drug (17) is simply that people have more money to spend. Tobacco and alcohol companies are now (18) much more on developing countries to take (19) of greater wealth there. And criminals involved in the illegal drug trade are following (20) ,introducing drugs into countries where they were previously hardly use. （5）（）
Jack S. Kilby, an electrical engineer whose invention of the integrated circuit gave rise to the information age and heralded an explosion of consumer electronics products in the last 50 years, from personal computers to cellphones, died Monday in Dallas. He was 81. His death, after a brief battle with cancer, was announced yesterday by Texas Instruments, the Dallas-based electronics company where he worked for a quarter centurya (46) The integrated circuit that Mr. Kilby designed shortly after arriving at Texas Instruments in 1958 served as the basis for modern microelectronics, transforming a technology that permitted the simultaneous manufacturing of a mere handful of transistors(晶体管) into a chip industry that routinely places billions of Lilliputian(微小的) switches in the area of a fingernail. His achievement—the integration—yielded a thin chip of crystal connecting previously separate components like transistors, resistors and capacitors within a single device. For that creation, commonly called the microchip, he was awarded the Nobel Prize in Physics in 2000. (47) During his career at Texas Instruments he claimed more than 60 patents and was also one of the inventors of the hand-held calculator and the thermal printer. But it was Mr. Kilby’s invention of the integrated circuit that most broadly shaped the electronic era. "It’s hard to find a place where the integrated circuit doesn’t affect your life today," Richard K. Templeton, Texas Instruments’ president and chief executive officer, said in an interview yesterday. "That’s how broad its impact is." It is an impact, Mr. Kilby said, that was largely unexpected. (48) "We expected to reduce the cost of electronics, but I don’t think anybody was thinking in terms of factors of a million," he said in an undated interview cited by Texas Instruments. (49) The remarkable acceleration of the manufacturing process based on the integrated circuit was later described by Gordon E. Moore, co-founder of the Intel Corporation, whose partner, Robert N. Noyee, invented another version of the integrated circuit just months after Mr. Kilby. In 1965, three years after the first commercial integrated circuits came to market, Dr. Moore observed that the number of transistors on a circuit was doubling at regular intervals and would do so far into the future. (50) The observation, which came to be known as Moore’s law, became the defining attribute of the chip-making industry, centered in what is now known as Silicon Valley, where Intel was based, rather than in Dallas.
A study of the physical and chemical (1) of life must begin, not on the Earth, (2) in the Sun: in fact, at the Sun’s (3) center. It is here that is to be found the (4) of the energy that the Sun constantly pours out into space (5) light and heat. This energy is (6) at the center of the Sun as billions upon billions of nuclei of hydrogen atoms (7) with each other and fuse together to form nuclei of helium, and, in doing so, release some of the (8) that is stored in the nuclei of the atoms. The output of light and heat of the Sun (9) some 600 million tons of hydrogen to be (10) into helium in the Sun every second. The Sun has been doing (11) for several thousands of millions of years. The nuclear energy is released at the Sun’s center as high-energy gamma radiation, a form of electromagnetic (12) like light and radio waves, only (13) a much shorter wave length. This gamma radiation is absorbed by atoms inside the Sun, to be remitted (14) slightly longer wave lengths. This radiation, in its (15) , is absorbed and remitted. As the energy filters through the layers of the solar interior, it passes through the X-ray part of the spectrum, (16) becoming light. At this (17) , it has reached what we call the solar surface, and can escape into space without being absorbed (18) by the solar atoms. A very small (19) of the Sun’s light and heat is emitted in such directions that, after passing a long distance through interplanetary space, it (20) the Earth.
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