PUBLIC ENGLISH TEST SYSTEM (PETS) LEVEL 3
2017年3月全国英语等级考试第三级笔试真题试卷
声迹
SECTION ⅠListening（25 minutes）
欧洲杯英文
答案：BACDA BCDDB CDBBA CDCCD ABAAD
SECTION II Reading （50 minutes）
Part A
Directions: Read the following two texts. Answer the questions on each text by choosing A, B, C or D. Mark your answers on your ANSWER SHEET.
Text 1
Passwords are everywhere in computer curity. All too often, they are also ineffective. A good password has to be both easy to remember and hard to guess，but in practice people em to pay attention to the former. Names of wives, husbands and children are popular. “123456” or “12345” are also common choices.
That predictability lets curity rearchers (and hackers) create dictionaries which list common passwords, uful to tho eking to break in. But although rearchers know t
hat passwords are incure，working out just how incure has been difficult. Many studies have only small samples to work on.
However, with the co-operation of Yahoo!，Joph Bonneau of Cambridge University obtained the biggest sample to date— 70 million passwords that came with uful data about their owners.
Mr Bonneau found some interesting variations. Older urs had better passwords than young ones. People who preferred language was Korean or German cho the most cure passwords；tho who spoke Indonesian the least. Passwords designed to hide nsitive information such as credit-card numbers were only slightly more cure than tho protecting less important things, like access to games. “Nag screens” that told urs they had chon a weak password made virtually no difference. And urs who accounts had been hacked in the past did not make more cure choices than tho who had never been hacked.
But it is the broader analysis of the sample that is of most interest to curity rearchers.
For, despite their differences，the 70 million urs were still predictable enough that a generic password dictionary was effective against both the entire sample and any slice of it. Mr Bonneau is blunt：“An attacker who can manage ten guess per account will compromi around 1% of accounts. ” And that is a worthwhile outcome for a hacker.
One obvious solution would be for sites to limit the number of guess that can be made before access is blocked. Yet whereas the biggest sites, such as Google and Microsoft, do take such measures, many do not. The reasons of their not doing so are various. So it’s time for urs to consider the alternatives to traditional passwords.
26. People tend to u passwords that are _____.
[A] easy to remember [B] hard to figure out
[C] random numbers [D ] popular names
【答案】A
27. Rearchers find it difficult to know how unsafe passwords are due to _____.
[A ] lack of rearch tools [C] limited time of studies
瑜伽功法[B ] lack of rearch funds [D] limited size of samples
【答案】D 我心依旧英文
偶数是什么意思28. It is indicated in the text that _____. consist
[A] Indonesians are nsitive to password curity
[B] young people tend to have cure passwords
chan[C] nag screens help little in password curity
[D] passwords for credit cards are usually safe
【答案】C
29. The underlined word “compromi” in Para. 5 most probably means _____.
[A ] compri [ B ] compensate
[C] endanger [D] encounter
戴西
【答案】C
30. The last paragraph of the text suggests that _____.
[A] net urs regulate their online behaviors
[B] net urs rely on themlves for curity
文本翻译[C ] big websites limit the number of guess
[D ] big websites offer urs convenient access
【答案】B
Text 2
John Lubbock, a British member of the Parliament, led to the first law to safeguard Britain' s heritage—the Ancient Monuments Bill. How did it happen?
By the late 1800s more and more people were visiting Stonehenge for a day out. Now a World Heritage Site owned by the Crown, it was, at the time, privately owned and neglected.
But the visitors left behind rubbish and leftover food. It encouraged rats that made holes at the stones’ foundations, weakening them. One of the upright stones had already fallen over and one had broken in two. They also chipped pieces off the stones for souvenirs and carved pictures into them, says architectural critic Jonathan Glancey.
It was the same for other pre-historic remains, which were disappearing fast. Threats also included farmers and landowners as the ancient stones got in the way of working on the fields and were a free source of building materials.
Shocked and angry, Lubbock took up the fight. When he heard Britain’ s largest ancient stone circle at Avebury in Wiltshire was up for sale in 1871 he persuaded its owners to ll it to him and the stone circle was saved.
“Lubbock aroud national attention for ancient monuments,’’ says Glancey. “At the time places like Stonehenge were just en as a collection of stones, ancient sites to get building materials.”
