Centenarian Study, the largest comprehensive study of centenarians in the world, they can fend off or even escape age-associated diseases like heart attack, stroke, cancer, diabetes and Alzheimer?s. Ninety percent of those studied were functionally independent for the vast majority of their lives up until the age of 92 , and 75% were just as autonomous at an average age of 95. “Centenarians disprove the perception that ?the older you get, the sicker you get.? Centenarians teach us that the older you get, the healthier you?ve been.” 69. This passage mainly discusses ________
A why women lead a healthier life than men. B how women can live longer and stay healthy.
C what keeps men from enjoying a longer life span. D whether men?s life style leads to their early death.
70. According to Thomas Perls, which of the following is a major factor contributing to the relative longevity of women over men?
A Their natural urge to remain healthy. B Their greater natural drive to pass on genes. C Their need to bear healthy offspring. D Their desire to have more children. 71. The author mentions “the legacy of our cave-dweller past” to __________ A support the argument about women?s role in rearing children. B summarize a possible cause of different life expectancies. C challenge the theory about our ancestor?s behaviour patterns. D illustrate the history of human evolution process.
72. According to the passage, testosterone is a hormone that _______
A increases as men grow older. B reduces risk factors in male behaviour.
C leads to aggressive behaviour and heart disease. D accounts for women?s dislike for violent films. 73. Compared with women, men as a whole ____.
A suffer from depression more often. B suffer from diseases later than women. C are reluctant to have physical checkups. D are not affected by violent movies. 74. Centenarians refer to people who ____
A live longer than females. B live at the turn of the century. C are extremely independent. D are a hundred years or older. Passage Five
Last year, Curt Dunnam bought a Chevrolet Blazer with one of the most popular new features in high-end cars: the Onstar personal security system.
The heavily advertised communications and tracking feature is used nationwide by more than two million drivers, who simply push a button to connect, via a built-in cell-phone, to a member of the Onstar staff. A Global Positioning System, or G.P.S., helps the employee give verbal directions to the driver or locate the car after an accident. The company can even send a signal to unlock car doors for locked-out owners, or honk the horn to help people find their cars in an endless plain of parking spaces. The biggest selling point for the system is its use in frustrating car thieves. Once an owner reports to the police that a car has been stolen, the company can track it to help arrest the thieves, a service it performs about 400 times each month.
But for Mr. Dunnam, the more he learned about his car?s security features, the less secure he felt. He has enough technical knowledge to worry that someone else---- law enforcement officers, or hackers----could listen in one his phone calls, or gain control over his automotive systems without his knowledge or consent. “While I don?t believe G.M. intentionally designed this system to facilitate such activities, they sure have made it easy,” he said. Mr. Dunnam said he had become even more concerned because of a federal appeals court case involving a criminal investigation, in which federal authorities had demanded that a company attach a wiretap to tracking services like those installed in his car. The suit did not reveal which company was involved. A three-judge panel in San Francisco rejected the request, but not on privacy grounds; the panel said the wiretap would interfere with the operation of the safety services. Onstar has said that its equipment was not involved in that case. An Onstar spokeswoman, Geri Lama, suggested that Mr. Dunnam?s worries were overblown. The signals that the company
