填空题A great deal of attention is being paid to digital divide—the division of the world into the info rich and the info poor. That divide does exist today. I lectured about this looming danger 20 years ago. What was less{{U}} (36) {{/U}}then are now the new,{{U}} (37) {{/U}}forces that work against the digital divide. There are reasons to be optimistic. There are technological reasons to hope the digital divide will narrow. As the Internet becomes more{{U}} (38) {{/U}}, it is in the interest of business to universalize access—after all, the more people on line, the more potential customers there are. More and more governments, afraid of falling behind ,want to spread Internet access. Within the next decade or two, one to two billion people on the planet will be{{U}} (39) {{/U}}together. So the digital divide will narrow rather than widen in the years ahead. And that is very good news because Internet may well be the 'most powerful tool for{{U}} (40) {{/U}}world poverty. Of course, the use of the Internet isn't the only way to defeat{{U}} (41) {{/U}}nor the only tool we have. But it has enormous{{U}} (42) {{/U}}. To take advantage of this tool, some poor countries should get over their{{U}} (43) {{/U}}against foreign investment. Take American history for example. When the United States first built its basic structures, it didn't have the capital to do so.{{U}} (44) {{/U}}were built with foreign investment. The English, the Germans, the Dutch and the French all invested and financed them. Now Americans own them all.{{U}} (45) {{/U}}. The more foreign capital you have to build your basic facilities,{{U}} (46) {{/U}}. So it's wise to build the energy and telecom facilities thus to take full advantages of the Internet.

填空题To many web-building spiders, most of whom are nearly blind, the web is their S36 ______ window on the world, their means of communicating, S37 ______ prey, meeting mates and protecting themselves. A web-building spider without its web is like a man on an island of solid rock, totally nut of touch and S38 ______ to starve to death. So vital is the web to a spider' s S39 ______ that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely S40 ______ webs. Then, as the animal gets thinner, it constructs a wider-meshed (风眼较大的) web using fewer strands. Such webs would only trap larger prey, which is more S41 ______ from the S42 ______ of a starving spider. The spider conserves energy by recycling web protein. S43 ______ .In studies with radioactively labeled materials, it was found that 95 percent of web protein reappears in the next day's web. S44 ______. Scientists are impressed by the adaptability of the spider's brain. If some of the existing strands are destroyed, or S45 ______. One spider will even finish building the incomplete web of another.

填空题S2. Unlike Picasso, most artists S2 .

填空题The presence of a small amount of HIV in a body fluid does not necessarily result in ______.

填空题One big question for the entertainment industry is the viewers' ______ in the future.

填空题Not only must we be confident of our own future, we must also ______. (而且还要随时准备应付任何挫折)

填空题Better think twice before choosing a password for emails, online bank accounts and airline tickets. Passwords that show no imagination or (1) are easy prey (捕获物) for information pirates (劫掠者), a new US study says. A(n) (2) analysis of 28,000 passwords recently stolen from a popular US website and posted on the Internet (3) that people often do the easy thing. It found that 16 percent took a first name as a password, (4) their own or one of their children's, according to the study published by Information Week. Another 14 percent relied on the easiest keyboard (5) to remember such as "1234" or "12345678." For those using English keyboards, "QWERTY", was popular. Likewise, "AZERTY" (6) with people with European keyboards. Five percent of the stolen passwords were names of television shows or stars popular with young people like "hannah," (7) by singer Hannah Montana. "Pokemon," "Matrix," and "Ironman" were others. The word "password," or easy to guess variations like "password1," accounted for four percent. Three percent of the passwords expressed (8) like "I don't care," "Whatever," "Yes" or "No." There were (9) choices—"Iloveyou"—and their opposite—"Ihateyou." Robert Graham, of the company Errata Security, which did the analysis and published the conclusions, advises that to better protect against cyber (10) : "choose a password that is longer than eight characters with one capital letter and one symbol." A. invasion B. critical C. combinations D. attitudes E. furnished F. uniqueness G. reveals H. scored I. generally J. liberates K. emotional L. statistical M. conversely N. principle O. inspired

填空题In the same way that a child must be able to move his arms and legs before he can learn to walk, the child must physiologically (在生理学方面) be (47) of producing and experiencing particular emotions before these emotions can be (48) through learning. Psychologists have found that there are two basic (49) by which learning takes place. One kind of learning is called "classical conditioning. " This occurs when one event or stimulus is (50) paired with, or followed by, a reward or (51) . It is through classical conditioning that a child learns to (52) his mother's face and voice with happiness and love, for he learns that this person provides food and comfort. Negative emotions are learned in a similar (53) . The second kind of learning is called "operant conditioning." This occurs when an individual learns to do things that produce rewards in his (54) and learns not to do things that produce punishments. For example, if a mother always (55) to her baby when he cries and cuddles (搂抱) him until he is quiet, she may teach him that if he cries he will get attention from mother. Thus, the baby will learn to increase his crying in order to have his mother more. Every day, we grow and have new experiences. We constantly learn by reading, watching television, (56) with other people, and so forth. This learning affects our emotions and leads us to like some people and dislike others. A. personage I) improved B. interacting J) processes C. fashion K) consistently D. associate L) appreciation E. occasionally M) attends F. adheres N) punishment G. modified O) environment H) capable

填空题A college education is an investment in the future. But it can be a (36) investment. The College Board (37) that the costs at a four-year public college in the United States increased 10 percent this past school year. That was less than the (38) percent increase the year before, but still much higher than the (39) rate. Public colleges and universities still cost a lot less than private ones. Financial aid often helps. But financial (40) tell parents to start college (41) plans when their child is still very young. All 50 states and the District of Columbia (42) what are called 5-20-9 plans. These plans are named after the part of the federal tax law that created them in 1996. States use private investment companies to (43) most programs. Every state has its own rules governing 5-20-9 plans. Some of the plans are free of state taxes. And all are free of federal taxes. (44) . (45) . Families must decide how aggressively they want to put money into stocks, bonds or other investments. (46) . This kind of savings program is called a prepaid tuition plan.

填空题During 1957 a crossover was began to prepare conversion to______.

填空题In families with two working parents, fathers may have more impact on a child"s language development than mothers, a new study suggests. Researchers 21 92 families form 11 child care centers before their children were a year old, interviewing each to establish income, level of education and child care arrangements. Overall, it was a group of well-educated middle-class families, with married parents both living in the home. When the children were 2, researchers videotaped them at home in free-play sessions with both parents, 22 all of their speech. The study will appear in the November issue of The Journal of Applied Developmental Psychology . The scientists measured the 23 number of utterance (话语) of the parents, the number of different words they used, the complexity of their sentences and other 24 of their speech. On average, fathers spoke less than mothers did, but they did not differ in the length of utterances or proportion of questions asked. Finally, the researchers 25 the children"s speech at age 3, using a standardized language test. The only predictors of high scores on the test were the mother"s level of education, the 26 of child care and the number of different words the father used. The researchers are 27 why the father"s speech, and not the mother"s, had an effect. "It"s well 28 that the mother"s language does have an impact," said Nadya Pancsofar, the lead author of the study. It could be that the high-functioning mothers in the study had 29 had a strong influence on their children"s speech development, Ms. Pancsofar said, "or it may be that mothers are 30 in a way we didn"t measure in the study." A. already B. analyzed C. aspects D. characters E. contributing F. describing G. established H. quality I. quoted J. recording K. recruited L. total M. unconscious N. unsure O. yet

填空题Farmers can improve agricultural production by using more and more expensive fertilizers to make the degraded land get enough nutrients.