单选题It is now believed that the {{U}}dramatic{{/U}} changes in family structure, though regrettable, are im possible to reverse.

单选题I was disappointed with the film. I had expected ______ to be much better． A．that B．this C．one D．it

单选题He A sat in front of the young people, his dusty face B masking his age , C dressed in a plain brown suit that did not D fit for him .

单选题The idea ______ you can get a degree without hard work is quite wrong.

单选题In the dark they could not see anything clear, but could______.

单选题The local residents were unhappy about the curfew in this region and decided to______it.(清华大学2007年试题)

单选题______ is well known ______ Hong Kong returned to China on July 1st, 1997. A) It, that B) As, /C) As, as D) It, which

单选题In______, the whole tangled saga is a classic case of serious allegations falling through the cracks between federal, state and local jurisdictions and between slate lines.(2003年西南财经大学考博试题)

单选题{{B}}Passage Two{{/B}} Why is Valentine's Day, a holiday dedicated to the sweet bloom of love, celebrated in a cold month more suited to hats and gloves than to thoughts of love? "It's very mysterious," says Henry Kelly, director of the Center for Medieval and Renaissance Studies at the University of California. Kelly theorizes lovers everywhere can thank two guys from the 14th century: renowned poet Geoffrey Chaucer—famous for penning "The Canterbury Tales"—and a not-so-famous saint who went by the name of Valentine. In 1381, Chaucer was busy composing a poem in honor of the arranged marriage between England's Richard II and Anne of Bohemia. Chaucer was looking for just the right saint to honor on May 3, the day Richard II signed the papers of engagement to his Bohemia beauty. His search ended, Kelly guesses, when Chaucer learned that a Saint Valentine of Genoa had an honorary feast day on May 3. So he wrote the poem "The Parliament of Fowls" in the couple's honor. "The Parliament of Fowls" literally means "the meeting of birds" , says Kelly. "Chaucer dreamed up the idea that all birds chose their mates on May 3rd. When the spring brought its sunny smile back to the earth, it was easy to imagine the winged animals fluttering about and flirting with their lovers. " After Chaucer's death in ld00, Valentine's Day celebrations got pushed back to February. The date may have changed because the first song birds that traditionally warble(鸟鸣) after a winter tend to debut in mid-February. But the holiday that honors lovebirds everywhere with rhymed verse and colored candy hearts has not always been so popular. The very celebration of Valentine's Day has gone in and out of vogue. In the 16th century in Genoa you have it, but there is not much notice of it in other countries. The sweet-toothed holiday experienced renewed vigor in England just prior to 1800, and publishing companies came to the aid of tongue-tied lovers by distributing booklets of passages lovers could use to stir hearts. If they couldn't find the words in their hearts, companies figured, at least these Romeos could find some coins in their pocket to make their sweethearts happy. The celebration suffered a popularity plunge in the 19th century, but by the next century, Americans had rescued Valentine's Day from the trash heap, turning it into a commercial {{U}}bonanza{{/U}}.

单选题Shelly prepared carefully for her English examination so that she could be sure of passing it at her first______. A．term B．purpose C．attempt D．time

单选题So the most ______ scientist alive at that time who symbolized the height of human intellect adopted what became his last message-this manifesto, which implored govemments and the public not to allow our civilization to be destroyed by human folly.

单选题As seen from the Earth at night, ______planet Jupiter ranks third among the planets and stars in maximum brightness, after Venus and Mars.

单选题 In computing, passwords are commonly used to limit access to official users. Yet the widespread use of passwords has serious drawbacks. Office workers now have to remember an average of twelve system passwords. In theory they should use different passwords for each site, but in reality these would be impossible to remember, so many people use the same password for all. An additional problem is that the majority use simple words such as "hello", or names of family members, instead of more secure combinations of numbers and letters, such as 6ANV76Y. This permits computer hackers to download dictionaries and quickly find the word that allows them access. When system users forget their passwords there is extra expense in supplying new ones, while if people are forced to change passwords frequently they often write them down, making systems even less secure. Therefore, it is clear that the idea of passwords which have been used as security devices for thousands of years, may need rethinking. One possible alternative has been developed by the American firm Real User, and is called "Passfaces". In order to access the system a worker has to select a series of photographs of faces from a randomly(随机的) generated sequence. If the pictures are selected in the correct order, access is granted. This concept depends on the human ability to recognize and remember a huge number of different faces, and the advantage is that such a sequence cannot be told to anyone or written down, so is more secure. It is claimed that the picture sequence, which used photographs of university students, is easier to remember than passwords, and it has now been adopted for the United States Senate.

单选题"Europe needs to import to export. " That is the slogan of the European Commission's new strategy for securing its economic place in the world, unveiled this week by Peter Mandelson, the European Union's commissioner for trade. The soundbite, of course, gets the economics precisely backwards: exports are the price a country must pay for its imports; Europeans toil away making stuff for others to consume only so they can in turn get their hands on the fruits of foreign labours. But the slogan does capture two awkward truths European exporters must now confront. First, only by offering to open its own markets can the EU hope to persuade foreign countries to open theirs. But with the collapse of the Doha round of trade talks, it is not obvious to whom the Europeans should make their offers. Second, European companies are now part of elaborate global supply chains. Clumsy efforts to protect some of them from foreign competition deprive others of the cheap inputs they need to thrive in world markets. The new trade strategy looks at both of these dilemmas, among others. Though Mr Mandelson insists that he remains wedded to multilateral negotiations at'the World Trade Organisation, he also fancies pursuing a bit on the side with other willing trade partners. The EU will pick its partners according to three criteria: do they offer a big, growing market? Are they cutting deals with America or Japan? And are they guilty of deterring European companies, either repelling them at the border with high tariffs, or bogging them down in cumbersome rules and regulations? The strategy names ASEAN, South Korea, India and Russia as priorities, as well as two regional blocks, Mercosur and the Gulf Co-operation Council, that it is already courting. The EU will reveal its plans for China at the end of the month. The strategy also proposes to look again at how the EU protects its own borders, because its favored weapons are prone to backfire. For example, EU ministers decided this week to slap antidumping duties on leather shoes from Vietnam and China, which threaten shoemakers in Italy, Portugal and Spain. But the duties are opposed by Europe's own retailers and some of its sportswear makers. Letting Asian workers stitch and glue sports shoes makes it possible for such firms to employ Europeans to design and market them. Mr Mandelson presented his strategy as a way to help the EU become more competitive. Opening up to foreign rivals is, of course, an excellent way to foster competition in cloistered domestic industries. A pity then that most of his concrete proposals were about conquering markets abroad, and that the EU is still so ready to raise its defences at home.

单选题Where might this passage come from ?

单选题Consumers had hoped the higher prices would mean more goods in stores. But that was not