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Each passage is followed by some question or unfinished statements. For each of them there are four choices marked A, B, C, D. You should decide on the best choice and mark your answer on the ANSWER SHEET by blackening the corresponding letter in the brackets. Before high school teacher Kimberly Rugh got down to business at the start of a recent school week, she joked with her students about how she’d had to clean cake out of the comers of her house after her 2-year-old son’s birthday party. This friendly combination of chitchat took place not in front of a blackboard but in an Email message that Rugh sent to the 135 students she’s teaching at the Florida Virtual School, one of the nation’s leading online high schools. The school’s motto is "any time, any place, any path, any pace". Florida’s E-school attracts many students who need flexible scheduling, from young tennis stars and young musicians to brothers Tobias and Tyler Heeb, who take turns working on the computer while helping out with their family’s clam-farming business on Pine Island, off Florida’s southwest coast. Home-schoolers also are well represented. Most students live in Florida, but 55 hail from West Virginia, where a severe teacher shortage makes it hard for many students to take advanced classes. Seven kids from Texas and four from Shanghai round out the student body. The great majority of Florida Virtual Schoolers--80 percent are enrolled in regular Florida public or private high schools. Some are busy overachievers. Others are retaking classes they barely passed the first time. The school’s biggest challenge is making sure that students aren’t left to sink or swim on their own. After the school experienced a disappointing course completion rate of just 40 percent in its early years, Executive Director Julie Young made a priority out of what she calls "relationship-building", asking teachers to stay in frequent E-mail and phone contact with their students. That personal touch has helped: The completion rate is now 80 percent. Critics of online classes say that while they may have a limited place, they are a poor substitute for the face-to-face contact and socialization that take place in brick-and-mortar classrooms. Despite opportunities for online chats, some virtual students say they’d prefer to have more interaction with their peers. Students and parents are quick to acknowledge that virtual schooling isn’t for everyone. "If your child’s not focused and motivated, I can only imagine it would be a nightmare," says Patricia Haygood of Orlando, whose two daughters are thriving at the Florida school. For those who have what it takes, however, virtual learning fills an important niche. "I can work at my own pace, on my own time," says Hackney. "It’s the ultimate in student responsibility." Kimberly Rugh Talked about her son’s birthday party ______ .
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与心理和社会因素密切相关，以躯体损害为主的疾病是
In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it "protecting civilization from the faces of terror". The company’s share price skyrocketed, as did the stocks of other face-recognition companies, and airports across the globe began installing the software and running trials. As the results start to come in, however, the gloss (光滑表面) is wearing off. No matter what you might have heard about face-recognition software, Big Brother is not so good as expected. The concern was based largely on an independent assessment of face-recognition systems carried out in 2000 in the U. S. by the Department of Defense. These tests found that to catch 90 percent of suspects at an airport, face-recognition software would have to raise a huge number of false alarms. one in three people would end up being dragged out of the line and that’s assuming everyone looks straight at the camera and makes no effort to disguise himself. Results from the recent airport trials would seem to justify that concern. Most face-recognition systems use some kind of geometric technique to translate a picture of a face into a set of numbers that capture its characteristics. once it has identified these boundaries, the software calculates their relative sizes and positions and converts this geometry into what Visionics calls a "faceprint". Feed the software a series of mugshots, and it’ll calculate their faceprints. Then it can monitor live CCTV images for the faces of known suspects. When it finds a match, it raises an alarm. Even if the system does manage to capture a face, the problems aren’t over. The trouble is that a suspect’s faceprint taken from live CCTV is unlikely to match the one in the database in every detail. To give themselves the best chance of picking up suspects, operators can set the software so that it doesn’t have to make an exact match before it raises the alarm. But there’s a price to pay: the more potential suspects you pick up, the more false alarms you get. You have to get the balance just right. Despite the disappointing tests, some people insist that face-recognition technology is good enough to put terrorists off. After all the claims and counter-claims, with no one able to discern(洞察) the truth, the industry may soon have to face up to reality. What is the fatal defect of the system according to the U. S. Department of Defense
The White HouseWe get up early this morning and (51) a long walk after breakfast. We walked through the business section of the city. I told you yesterday that the city was larger (52) I thought it would be. (53) the business section is smaller than I thought it would be. I suppose that’s (54) Washington is a special kind of city. (55) the people in Washington work for the government. About 9:30 we went to the White House. It’s (56) to the public from 10 till 12, and there was a long line of people waiting to get in. We didn’t have to wait very long, because the line moved (57) quickly.The White House is really white. It is painted every year. And it seems very white, because it’s got beautiful lawns all around it, (58) many trees and shrubs. The grounds (59) about four square blocks. I mean, they’re about two blocks long (60) each side. The part (61) the President lives and works is not open to the public. But the part we saw was beautiful. We went through five of the main rooms. One of them was the library, on the ground floor. On the next floor, there are three rooms named (62) the colors that are. used in them: the Red Room, the Blue Room and the Green Room.The walls are covered with silk (63) . There are (64) old furniture, from the time (65) the White House was first built. And everywhere there are paintings and statues of former presidents and other famous people from history. 61().
为了某种需要，现要绘制一幅代表某个国家7个省——G、I、J、L、P、S、V的地图。 G与除J之外的所有其他5个省相邻。 I恰好与4个省——G、J、P、V相邻。 J恰好与2个省——I和P相邻。 L恰好与2个省——G和V相邻。 P恰好与3个省——G、I、J相邻。 S仅与G相邻。 V恰好与三个省——G、I、L相邻。 恰好要用6种颜色——金色、翡翠色、橄榄色、红色、银色、白色来表示这7个省，每种颜色至少使用一次，每个省在地图上仅用一种颜色，地图颜色的运用遵从以下条件： (1)相邻的省不能使用相同的颜色。 (2)翡翠色和橄榄色不能相邻。 (3)银色和白色不能相邻。 (4)G的颜色是红色。 (5)I用翡翠色。 若V和J在地图上是白色，则S一定是______。
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