2018-12-31 18:05:33 | 来源:网络及考生回忆
50、Great Wall, first built 2000 years ago, is a____ miracle.
A、cautious
B、marvelous
C、numerous
D、serious
材料
Directions : There is 1 passage in this part. The passage is followed by some questions or unfinished statements. For each of them there are four choices , You should decide on the best choice.
Your face is the future of smartphone security. Apple made that clear last week when it unveiled the pricey iPhone X. Apple claims to have conquered many of the challenges that have prevented the widespread use offacial biometrics. But a number of computer-vision researchers say they are skeptical that a smartphone-based system like FaceID can account for things like variable lighting conditions or subtle changes in a person's appearance to create a secure-yet-practical way to unlock a phone a dozen or more times a day.
Apple’s new technology does sound promising. The company says FaceID creates a “precise depth map” of one’s visage by projecting more than 30,000 infrared dots against a person’s face, then using the phone’s infrared TrueDepth camera and high-power microchip to collect and analyze the results. Users are also asked to turn their head as they scan so the phone's machine-learning algorithm can measure the face from several angles and create a more detailed 3-D map of their features. Once the map is created and stored, the iPhone X uses infrared light to help FaceID scan a person’s face even in the dark. Meanwhile, machine-learning algorithms running on the phonekeep track of changes in a person's appearance—including glasses, facial hair and hats—so the smartphone’s accuracy improves over time.
Despite advances in facial recognition in recent years, it remains unclear whether FaceID will work in a variety of conditions while also keeping the iPhone X secure. Hackers, for example, quickly found a way to bypass the Samsung Galaxy S8's facial-recognition scanner when it was introduced in March: They tricked the device by simply showing it a photo of the user. FaceID’s use of 3-D facial maps could address that problem. But historically it has been a big challenge for such a system to recognize faces under different lighting conditions and from a variety of angles.
Apple showed off FaceID last week under relatively controlled conditions, says Arun Ross, a professor of computer science and engineering at Michigan State University. "Clearly the demo was very interesting," he says. "But at the same time some extraordinary claims were made." Apple' s Schiller said, for example, that the chance a random person' s face could unlock someone else' s iPhone X was one in a million——much more secure than TouchID. Ross says, however, that it is not clear how often FaceID fails to recognize its owner. When contacted, Apple declined to elaborate on Schiller' s comments.
“Like all biometrics, FaceID will have a problem with revocation,” says Vitaly Shmatikov, a computer science professor at Cornell Tech. “If a password is compromised, it can be changed—but a face cannot be changed.” Apple touts its ability to secure data on its iPhones, which do not share biometric information with the company’s servers. Still, Ross says, hackers always seem to find a way around even the tightest security.
51、What is the computer-vision researchers’ main concern of iPhone X’ s FaceID?
A、They have concerns of the security and convenience of FaceID.
B、They don’ t believe iPhone X’ s FaceID can successfully unlock a phone every time.
C、They have doubts of its technique to overcome variable lighting and subtle change of the user’s face.
D、They are mainly worried about the smartphone’ s accuracy.
52、What does Arun Ross mean by “relatively controlled condition”?
A、To start an explanation of FaceID' s using condition.
B、To mention that Apple Inc. shows their new product under a well designed environment.
C、To imply that FaceID has its limits.
D、To add a context explanation of the interesting demo.
53、Why does the author mention Vitaly Shmatikov saying "a face cannot be changed" ?
A、To infer that a person' s face is highly unlikely to change to another shape.
B、To illustrate that the image stored in the phone cannot be changed if FaceID is compromised.
C、To explain the revocation difficulty of FaceID.
D、To enhance the data security on iPhone since it do not share biometric information with servers.
54、What is the author' s attitude toward Apple' s Face ID technology on iPhone X?
A、Promising
B、Skeptical
C、Supportive
D、Neutral
55、Which one of the following statements about iPhoneX's FaceID is false according to this article?
A、It is a whole new technique Apple Inc. applied on iPhone X.
B、It has started a revolution in computer-vision industry.
C、It has a problem of revocation.
D、It has embedded security mechanisms to secure the data on the phone.
56、随着信息技术的发展,公司、金融机构等部门的活动越来越多地由计算机存储的信息控制着,这给了一些人通过对信息进行不良操作来获取财富的可乘之机。这种情况一般不易被人发现。可奇怪的是,即使被发现,也可以一走了之,非但不受惩罚,还有可能得到原主管人员提供的高评价推荐信。原因其实很简单,公司主管与计算机犯法者齿竭唇亡,因为一旦公众发现他们公司的计算机被滥用,公司的声誉就会受到严重损害,所以只能任由他们逍遥法外。材料的中心思想是:( )。
A、为何计算机犯罪分子可以逃脱惩罚
B、为何计算机犯罪不易被人发觉
C、计算机犯罪分子怎样从前主管那里得到推荐信
D、为何计算机犯罪一直得不到整治
57、下列句子意义表达明确的一项是:( )。
A、里面放着各式各样她童年时期的玩偶
B、部长把我们几个部的干部都叫在一起开会
C、如果我把这份工作不认真做好,就很可能被老板解雇
D、在这条艰难的道路上,他们思考着,判断着,探索着
58、一个人做的梦,就只能是个梦;一群人怀着同一个梦想,便是真实。这段话意在说明:( )。
A、一个人不管怎么努力都不会成功
B、如果有人和你有着同样的梦想,说明这个梦想是普遍的,是经过努力就可能实现的
C、一个人和一群人成功与否的区别在于有没有将梦想付诸实践
D、一群人总是会取得成功的
59、置身于大自然中,拥抱自然,沉心思索,常常可以感受到诸多寻常道理中新鲜的( )。
A、意味
B、意义
C、含义
D、涵义
60、《礼记典礼》:“大夫七十而致事。”致事就是致仕,言致其所掌管之事于君而告老。文中致事的意思是( )。
A、退休
B、出仕
C、汇报
D、思维极致
61、以下句子有语病的是:( )。
A、我们要尽一切力量使我们走上现代化的道路
B、小明做任何工作都是非常认真得很
C、虽然这次会议时间不长,但大家收获很大
D、校长采纳了您的意见,从而激发了广大同学提意见的积极性
62、我国土地资源总量虽居世界前列,但由于人口众多和地形多样化的原因,土地人均占有量和已利用土地资源中耕地的人均占有量远低于世界平均数。这段话主要支持了这样一种论点,即我国:( )。
A、土地资源丰富
B、土地资源总量居世界前列
C、土地资源相对贫乏
D、土地资源贫乏
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