【C1】______

Big Ben is the great clock【C3】______up in a tower of the Parliament building. This is the building in London where laws are【C4】______. The people of London like to see Big Ben's four friendly faces. They like to hear the chimes【C5】______. 15 minutes. They like to hear the bell【C6】______on the hour. Bong! Bong! Bong! Big Ben's story started in 1834. In that year the old parliament building burned【C7】______. Its clock tower crashed to the ground. There【C8】______to be a new building—and a new clock. Plans were made. They called【C9】______a "King of Clocks, the biggest and best in the world". So the clock had to be big. And it had to【C10】______very good time. In two years the big clock was made. Five more years went by【C11】______the clock tower was finished. Then the four bells for the chimes were brought into the tower. And at last the giant hour bell was put in【C12】______. It rang our for the first time【C13】______July 11, 1859. This great bell had to【C14】______a name. A meeting of Parliament was called to pick【C15】______. "This clock is the King of Clocks," one man said. "Let's call the bell the Queen of Bells." "Then why not Victoria？" said【C16】______.(Victoria was the British queen at that time)The talk about names went【C17】______. Then Benjamin Hall got up to speak. He was a big man that others liked. By this time they were all【C18】______. Some one shouted, "Why not call it Big Ben and be done【C19】______it？" Everybody laughed, and the meeting broke up. But Big Ben it was from then on. Not just the bell【C20】______the whole clock. 【C1】 A．once B．usually C．ever D．even

The United States is well-known for its 【C1】______ of major higher highways designed to help a 【C2】______ get from one place to another in the shortest possible time. 【C3】______ these wide modern roads are generally 【C4】______ and well maintained, with much sharp curves and many straight 【C5】______ , a direct route is not always the most 【C6】______ one. Large 【C7】______ often pass by scenic areas and interesting small towns. Furthermore, these highways generally 【C8】______ large urban centers, which means that they become crowded with 【C9】______ traffic during rush hours, 【C10】______ the " fast, direct" route becomes a very slow route. However, there is still always another route to take 【C11】______ you are not in a hurry. Not far from the 【C12】______ new" superhighways", there are often older, 【C13】______ heavily traveled roads which go through the countryside. All of these are good two-lane roads; others are uneven roads 【C14】______ through the country. These secondary routes may 【C15】______ steep slopes, along high 【C16】______ , or down frightening hillsides to towns 【C17】______ in deep valleys. Through these less direct routes, longer and slower, they generally go to places 【C18】______ the air is clean and the scenery is beautiful, and the driver may have a 【C19】______ to get a fresh, clean 【C20】______ of the world. 【C1】 A．network B．equipment C．facilities D．way

Two of them are【C2】______while the other six【C3】______from the sun than the earth is. The farther they are, the longer【C4】______they【C5】______around the sun. People noticed long ago that these traveling bodies moved around in the sky【C6】______definite paths. It is a【C7】______called gravity that【C8】______them in their paths. We know that every little bit of matter in the【C9】______pulls upon every other bit of mater. The pull between two bodies is【C10】______to the product of their masses. Because the sun is so large that pulls【C11】______the sun and the planets are thus great. If it【C12】______not for these pulls, the planets【C13】______off into space. In the same way【C14】______exists a pull between the earth and the moon, which keeps the moon【C15】______in its orbit around our planet, the earth. The gravity holds you to its surface, and pulls back to it the ball which you【C16】______into the air. Of course the ball also pulls【C17】______the larger earth, but the earth is so much larger that the pull【C18】______. Now remember that large bodies exert a greater pull on any body than smaller ones which contain【C19】______material. But each object in the universe, no matter how small, pulls on all other objects【C20】______extent. 【C1】 A．thing B．body C．matter D．substance

To many web-building spiders, most of 【C1】______ are nearly blind, the web is their essential window 【C2】______ the world: their means of communicating, 【C3】______ prey, meeting mates and protecting themselves. A web-building spider 【C4】______ its web is like a man marooned on an island of solid rock, totally out of touch and destined to starve to death. So 【C5】______ is the web to an orb-web spider's survival that the animal will continue to construct new webs daily 【C6】______ it is being starved. For 16 days the 【C7】______ spider builds completely normal webs. Then, as the animal gets scrawnier, it constructs a wider-meshed web using 【C8】______ strands. Such webs would only trap larger prey, which is more 【C9】______ from the perspective of a starving spider. The spider 【C10】______ energy by recycling web protein. It simply eats its own web each evening and reuses it to manufacture 【C11】______ silk. In studies with radioactively labeled materials, it 【C12】______ that 95 percent of web protein reappeared in 【C13】______ web. Most of the energy needed for web-building is used in walking over the strands as they are laid down. Scientists are 【C14】______ by the adaptability of the spider's highly preprogrammed brain, which is larger 【C15】______ its size than the brain of any other invertebrate. If web-building is interrupted, or if some of the 【C16】______ strands are destroyed, the spider 【C17】______ retraces its steps to see where the web is 【C18】______ and then finishes building a 【C19】______ web. One spider will even finish building the incomplete web of 【C20】______ . 【C1】 A．them B．whom C．that D．which

电池Ag∣AgCl(s)∣C1-1∣∣A+∣Ag可选________________________________做盐桥。

A．＞1 B．=1 C．＜1 D．无法确定

A．该查询结果中的元组为 { S1, S5 } B．该查询结果中的元组为 { S1, S2, S3, S5 } C．该查询结果中的元组为 { S1 } D．以上说法都不正确

Researchers have learned that the slapping noise pigeons make when they suddenly take off is the sound of super charged lift. They call it the "clap fling" effect. Here at SRI International scientists try to duplicate the pigeons' thrust. A flashing strobe reveals the secret. Scott Stanford, a scientist at SRI, says, You re looking at the clap fling effect, where the two wings will come together and peel apart 【C2】______ each other, thus augmenting lift 【C3】______ drawing air from the top to the bottom. " This mechanical bug won't get off the ground. 【C4】______ its flapping wings demonstrate a potential propulsion system for robotic birds: man-made rubbery muscle. Roy Kornbluh works at SRI. "There, I'm turning the voltage on and off, and you can see when the voltage is on, the material is larger 【C5】______ when the voltage is off." Super computers show high-speed airflows over supersonic aircraft. But scientists have only begun to see how air flows 【C6】______ really low speeds. Professor Max Platzer of the Naval Postgraduate School, says, "The flapping wing is generating a thrust, this way, this is the basic physics of the phenomenon." It's pelicans--not pigeons--the Navy is looking at. The Navy is looking at the smooth easy flight of pelicans low over water--called "ground effect." Researchers at the Naval Postgraduate School are trying to imitate the pelican's efficiency. Assistant Professor Kevin Jones of the Naval Postgraduate School says, " 【C7】______ flapping the wings, symmetrically, we're 【C8】______ effect imitating ground effect. We now have the same feature a bird sees when it's flying, over a ground plane." An electric motor drives the flapping wings. Researchers here are working 【C9】______ ways to beam power to the tiny bird. David Jenn of the Naval Postgraduate School says, "There's no battery inside of here, so we're going to set this inside the radar beam, and the energy is extracted from the radar beam and will be used to propel the motor." Scientists are learning it's one thing to build an airplane, 【C10】______ quite another to build a bird. 【C1】______

<img src="https://img2.soutiyun.com/shangxueba/askkp/2022-06/30/88/20220630163542803.png" alt=""/> A．A.-a、0 B．B.-a、-D/h C．C.0、-D/h D．D.0、0

A wise male driver will always give them plenty of roads and still be on the lookout for the【C2】______ to happen. This【C3】______ has nothing to do with their lack of ability to cope with the【C4】______ complexities of the vehicles; it is due to an inherent【C5】______ which, in certain other circumstances, may be highly desirable,【C6】______ which, behind the wheel, is deadly. It is their【C7】 for talking. Women together in a car yield【C8】 ______ this need and when they talk they look into each other's faces. Simple words are【C9】______ It is necessary for them to see the expression which【C10】______ the words and so read the meaning the words left unsaid.【C11】______ two women in the front of a car repeatedly【C12】______ each other's attention from the road, and four represent an incredible danger【C13】______ the one nominally driving the car feels it necessary to see and hear not only what her companion is talking about but also, such is her【C14】______ , what those in the back are discussing in case it is anything【C15】______ which she can inject and add opinion, or in the hope of collecting fresh fuel to feed other fires on later【C16】______ . Another factor is that women seldom use the driving mirror except for【C17】______ purposes, after which its position gives the driver little【C18】______ of the state of the road behind. A final important factor that seems to lie at the back of feminine attitudes to driving is that 【C19】______ few women have the feel for a machine that so many men have; the satisfaction of a slick change down means nothing to them. The coordination between the various maneuvers (机动), an operation【C20】______ gives many men a boost of pride, is only a momentary lapse in their concentration on the topic in hand. 【C1】 A．least B．most C．last D．worst

【C2】______ in teachers' knowledge of their subject and weaknesses in their teaching methods are threatening to limit improvements in reading, writing and numeracy, the analysis for the Department for Education and Skills found. The report, 【C3】______ a team of academics from Toronto University, concluded that it was difficult to assess the effect of the 【C4】______ on pupils' learning. While literacy and numeracy scores had risen significantly between 1997 and 2002, much of the increases had 【C5】______ before the introduction of the two strategies: literacy in 1998 and numeracy in 1999. The team, led by Professor Michael Fullan, also warned ministers against 【C6】______ ever higher targets for schools, arguing that this would backfire when staff began to regard the goals as 【C7】______ . But this advice came too late for the Government, which has already set new and higher targets for primary schools, 【C8】______ failing to meet the previous goals in the summer. Soon after coming to power in 1997, the Labour government set challenging targets which required 80 percent of Il-year-olds to reach a required 【C9】______ in English, and 75 percent in maths, by 2002. But after a strong start, the improvements tailed off and both 【C10】______ were missed. Despite this failure, ministers have repeated their desire to push ahead with more demanding goals that require 85 percent of students to reach the standard in English and maths by 2004. The team of academics highlighted the 【C11】______ of some primary teachers' knowledge. "For the strategies to succeed in the ways that strategy leaders believe 【C12】______ possible, many teachers will need to be highly skilled and more knowledgeable about teaching literacy and mathematics than is currently the case," the report said. "The data indicate that for many teachers, gaps or weaknesses in subject knowledge limit the extent 【C13】______ they can make full use of the frameworks and resources of the strategies." The 【C14】______ also said that the high-profile nature of the targets had had "unintended negative consequences" for primary schools. The team cast 【C15】______ on ministers' ambition to improve standards further. The pressure on teachers to comply with directives from central government threatened to create a "culture of dependence" that would make it difficult for schools to raise standards once the ministers' focus had moved, the report concluded. 【C1】 A．grasp B．grip C．hold D．concern

A．=RANK(C1, A1:A20) B．=RANK($C$1, A1:A20) C．=RANK(A1, A$1:A$20) D．=RANK(A1:A20 , C1)

A、窗体的Click事件过程名是Myform_Click) B、命令按钮的Click事件过程名是C1_Click) C、命令按钮的Click事件过程名是Command1_Click) D、以上都是错误的