搜索结果不匹配？点我反馈
更多问题
根据以下材料，回答题。
Rising Tuition in the US
Every spring， US university administrators gather to discuss the next academic year"s budget.They consider faculty salaries， utility costs for dormitories， new building， needs and repairs to old ones. They run the numbers and conclude——it seems， inevitably——that， yet again， the cost of tuition must go up.
According to the US"s College Board， the price of attending a four-year private university in the US rose 81 percent between 1993 and 2004 （46） In 2005 and 2006 ，the numbers continued to rise.
According to university officials， college cost increases are simply the result of balancing university checkbooks. "Tuition increases at Cedarville University are determined by our revenue needs for each year."said the university"s president， Dr. Bill Brown. "Student tuition pays for 78 percent of the university"s operating costs. "Brown"s school is a private university that enrolls about 3，100 undergrads and is consistently recognized by annual college ranking guides like US News and World Report"s and The Princeton Review"s （47）
Tuition at private universities is set by administration officials and then sent for approval to the school"s board of trustees（懂事） （48） This board oversees （监管）all of a state"s public institutions.
John Durham，assistant secretary to the board of trustees at East Carolina University（ECU） ，explains that state law says that public institutions must make their services available whenever possible to the people of the state for free. Durham said that North Carolina residents only pay 22 percent of the cost of their education （49） State residents attending ECU pay about US $ 10，000 for tuition， room and board before financial aid.
Amid the news about continued increases in college costs， however， there is some good news.Tuition increases have been accompanied by roughly equal increases in financial aid at almost every university. To receive financial aid， US students complete a formal application with the federal government. The federal government then decides whether an applicant is eligible（有资格的）for grants or loans （50）
请在第__（46）__处填上正确答案。 查看材料
Whieh of the foilowing is NOT mentioned in the passage as an instance of attack by a hacker？ 查看材料
In Dr.Baum’s opinion，a true nature reserve . 查看材料
根据以下材料，回答题。
Hacking
People tend to think of computers as isolated machines，working away all by themselves.Some do——personal computer without an outside link，like someone’S hideaway（隐蔽的）cabin in the woods.But just as most of homes are tied to a community by streets，bus routes and electric lines，computers that exchange intelligence are part of a community——local，national and even global network joined by telephone connections.
The computer network is a creation of the electric age.but it is based on old—fashioned trust.It cannot work without trust.A rogue loose（为所欲为的无赖）in a computer system called hac-ker（黑客）is worse than a thief entering your house.He could go through anyone’s electronic mail or add to.change，distort or delete anything in the information stored in the computer’s menlory.He could even take control of the entire system by placing his own instructions in the software tl_lat runs it. He could shut the computer down whenever he wished，and no one could stop him.Then he could program the computer to erase any sign of his ever having been there·
Hacking.our electronic—age term for computer break—in，is more and more in the news-brainv kids vandalizing university records，even pranking（胡闹）about in supposedly safeguarded svstems.To those who understand how computer networks are increasingly regulating life in the late 20th century.these are not laughing matters.A potential for disaster is buildin9：A dissatisfied fonner insurance—company employee wipes out information from payroll（工资表）files.A student sends out a“virus"，a secret and destructive command，over a national network.The virus copies itself at lightning speed，jamming the entire network——thousands of academic，eommercial and government computer systems.Such disastrous cases have already occurred.Now exists tlle Dossibility of terrorism by computer. Spoiling a system responsible for air—traffic control at a busy airport.or knocking out the telephones of a major city，is a relatively easy way to spread Danic.Yet neitller business nor government has done enough to toughen its defenses against attack.For one thin9.such defenses are expensive;for another，they may interrupt communieation-tlle main reason for using computers in the first place.
The writer mentions“a thief”in the second paragraph . 查看材料
微信支付 
支付宝支付