Imagine you’re standing in line to buy an aft...

Imagine you’re standing in line to buy an after-school snack at a store. You step up to the counter and the cashier scans your food. Next, you have to pay. But instead of scanning a QR code (二维码) with your smartphone, you just hold out your hand so the cashier can scan your fingerprint. Or, a camera scans your face, your eyes or even your ear.

Now, this type of technology might not be far away. As technology companies move away from the traditional password, biometric(生物识别的) security, which includes fingerprint, face and voice ID, is becoming increasingly popular.

In 2013, Apple introduced the iPhone 5s, one of the first smartphones with a fingerprint scanner. Since then, using one’s fingerprint to unlock a phone and make mobile payments has become commonplace, bringing convenience to our lives. And since last year, Samsung has featured eye-scanning technology in its top smartphones, while Apple’s new iPhone X can even scan a user’s face. But despite its popularity, experts warn that biometrics might not be as secure as we’d imagined. “Biometrics are ideally good, but in practice, not so much” said John Michener, a biometrics expert.

When introducing the new iPhone’s Face ID feature, Phil Schiller, Apple’s senior vice president, said, “The chance that a random person in the population could look at your iPhone X and unlock it with their face is about one in a million.” But it’s already been done. In a video posted on community website Reddi, two brothers showed how they were each able to unlock the same iPhone X using their own face. And they aren’t even twins.

“We may expect too much from biometrics,” Anil Jain, a computer science professor at Michigan State University, told CBS News. “No security systems are perfect.”

Earlier this year, Jain found a way to trick biometric security. Using a printed copy of a thumbprint, she was able to unlock a dead person’s smartphone for police, according to tech website Splinter. “It’s good to see biometrics being used more,” Jain told CBS News, “because it adds another factors for security. But using multiple security measures is the best defense.”

1.What is the latest technology to unlock a smartphone according to the article?

A. QR code scanning.　　 B. Face scanning.　　 C. Fingerprint scanning.　　 D. Eye scanning.

2.What’s a major problem of the iPhone X’s Face ID system?

A. It takes too long to unlock the phone.

B. It often fails to recognize its owner’s face.

C. Face data could be used for other purposes.

D. Different faces could be used to unlock the same phone.

3.What does Anil Jain think of biometric security?

A. It’s as secure as traditional measures.

B. It has caused much trouble for police.

C. It should be used with other security measures.

D. It is perfect without any room for improvement.

4.The author wrote this article mainly to ______.

A. describe the popularity of biometrics

B. show how biometrics has changed our lives

C. point out various problems with biometrics

D. discuss the security problems of biometrics

高三英语阅读理解困难题查看答案及解析

Imagine you’re standing in line to buy a snack at a store. You step up to the counter and the cashier scans your food. Next, you have to pay. But instead of scanning a QR Code(二维码) with your smart phone, you just hold out your hand so the cashier can scan your fingerprint. Or, a camera scans your face, your eyes or even your ear.

Now, this type of technology might not be far away. As technology companies move away from the traditional password, biometric (生物特征识别的) security, which includes fingerprint, face and voice ID, is becoming increasingly popular.

In 2013, Apple introduced the iPhone 5s, one of the first smart phones with a fingerprint scanner. Since then, using one's fingerprint to unlock a phone and make mobile payments has become a commonplace, bringing convenience to our lives. And since 2016, Samsung has featured eye-scanning technology in its top smart phones, while Apple's new iphone X can even scan a user's face. But despite its popularity, experts warn that biometrics might not be as secure as we imagine. " Biometrics is ideally good in practice, not so much," said John Michener, a biometrics expert.

When introducing the new iPhone's face ID feature, Phil Schiller, Apple's senior vice-president, said. "The chance that a random person in the population could look at your iPhones X and unlock it with their face is about one in a million." But it's already been done. In a video posted on a community website Reddit, two brothers showed how they were each able to unlock the same iPhone X using their own face. And they aren't even twins.

"We may expect too much from biometrics," Anil Jain, a computer science professor at Michigan State University, told CBS News. "No security systems are perfect."

Earlier last year, Jain found a way to trick biometric security. Using a printed copy of a thumbprint, she was able to unlock a dead person's smart phone for the police, according to a tech website Splinter. "It's good to see biometrics being used more," Jain told CBS News, "because it adds another factor for security. But using multiple security measures is the best defense."

1.Which is the latest identification technology in a smart phone according to the passage?

A. Face scanning.　　 B. Eye scanning.

C. QR Code scanning.　　 D. Fingerprint scanning.

2.What is a major problem of the iPhone X's face ID system?

A. It takes too long to unlock the phone.

B. It often fails to recognize its owner's face.

C. Face data can be used for other purposes.

D. Different faces can be used to unlock the same phone.

3.What is Anil Jain's opinion about biometric security?

A. It is as secure as traditional measures.

B. It is perfect without much improvement.

C. It has caused much trouble for the police.

D. It should be used with other security measures.

4.What does the author intend to tell us in this passage?

A. The popularity of biometrics.

B. Security problems of biometrics.

C. Various problems with biometrics.

D. Great changes caused by biometrics.

高三英语阅读理解中等难度题查看答案及解析

Once, when I was a teenager, my father and I were standing in line to buy tickets for the circus. Finally, there was only one family between us and the ticket counter.

This family made a big impression on me. There were eight children, all probably under the age of twelve. You could tell they didn’t have a lot of money.

Their clothes were not expensive, but they were clean. The children were well-behaved, all of them standing in line, two-by-two behind their parents, holding hands. They were excitedly talking about the clowns, elephants, and other acts they would see that night with their brothers or sisters in a low voice.

One could sense they had never been to the circus before. It promised to be highlight of their young lives. The father and mother were at the head of the pack, standing proud as could be. The mother was holding her husband’s hand, looking up at him as if to say, “You are my knight in shining armor.”

He was smiling and responding in pride, looking back at her as if to say, “You got that right.” The ticket lady asked the father how many tickets he wanted. He proudly responded, “Please let me buy eight children’s tickets and two adult tickets so I can take my family to the circus.”

The ticket lady gave the price. The man’s wife let go of his hand, her head dropped, and his lips began to shake. The father leaned a little closer and asked, “How much did you say?”

The ticket lady again quoted the price. The man didn’t have enough money.

How was he supposed to turn and tell his eight children that he didn’t have enough money to take them to the circus?

Actually we were not wealthy in any sense. So I understand how the kids would feel. I felt sorry for them.

注意：

所需写的短文词数应为150左右；

应使用5个以上短文标有下划线的关键词语；

续写部分分为两段，每段的开头语已经为你写好；

续写完成后，请用下划线标出你所使用的关键词。

Paragraph 1

Seeing what was going on, my dad put his hand in his pocket, pulled out a $20 bill and dropped it on the ground. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Paragraph 2

That day my father and I went back to our car and drove home without any tickets. ___________

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

高三英语书面表达困难题查看答案及解析

The main street is lined with small stands and shops _____ sell almost anything you can imagine.

A. what　　　 B. where　　 C. who　　 D. which

高三英语单项填空中等难度题查看答案及解析

The main street is lined with small stands and shops _____ sell almost anything you　 can imagine.

A. what　　 B. where　　 C. who　　 D. which

高三英语单项填空中等难度题查看答案及解析

While standing in an airport security line recently, I got to witness first-hand what being the parent of a young adult really means.

A young woman of college age was in the line before me with her____loaded heavily. She was talking to her father who was standing a few feet away. “Dad, I____I'll call as soon as I get to Rome,” she said. He nodded nervously, and like any dad about to send their little girl across the ocean, ____wanted reassurance. “OK,” he said. And rocking backwards and forwards anxiously he continued, “But don't____! And your phone should work as soon as you____,but if it doesn't...”

Before he could finish, she____, “Dad, it will work! And if it doesn't, I'll call you with Laura's phone. I'll be____!”

He____agreeably, and I knew that when he looked at her, he didn't see a____woman about to start a great adventure. He saw a little girl taking her first nervous____on the school bus. It was time to be just as brave with this____as it was when she started school.

“Well, Dad. I'm off!” she____proudly as she loaded her belongings onto the X-ray belt. Then she walked to____them from the other side. And she____looked back at her dad again. However, I did. There he stood with____eyes. “Be brave," he must have been telling himself, as his____bank replaced his grown daughter with his little girl for a few more seconds. Then he____and walked away.

I____that young lady to her gate, and then watched her____a seat and wait for her plane to Rome. What a lucky young woman to have such a____father!

1.A.backpack B.phone C.father D.friend

2.A.predict B.admit C.expect D.promise

3.A.calmly B.randomly C.aimlessly D.desperately

4.A.forget B.hesitate C.panic D.worry

5.A.fly B.land C.return D.board

6.A.continued B.thought C.interrupted D.refused

7.A.urgent B.reliable C.fine D.careful

8.A.pushed B.nodded C.bowed D.left

9.A.confident B.nervous C.considerate D.generous

10.A.breaks B.measures C.chances D.steps

11.A.greeting B.goodbye C.meeting D.chance

12.A.objected B.whispered C.reminded D.announced

13.A.fetch B.load C.catch D.locate

14.A.occasionally B.still C.never D.always

15.A.innocent B.misty C.sharp D.cheerful

16.A.data B.story C.memory D.picture

17.A.froze B.disappeared C.turned D.failed

18.A.followed B.led C.took D.showed

19.A.send for B.fold up C.put away D.settle into

20.A.experienced B.brave C.respectable D.anxious

高三英语完形填空困难题查看答案及解析

Tired of standing in line? Wait a bit longer, and you may never have to again. Everyone from Amazon to Silicon Valley startups is trying to lines in retail stores.

Amazon has opened 24 of its Amazon Go stores, which use cameras and artificial intelligence to see what you've taken off shelves and charge you as you walk out. Some startups are closely copying Amazon's approach to using AI-powered cameras fixed in ceilings. But others are trying an entirely different way to skip the checkout: smart shopping carts. These companies have added cameras and sensors to the carts, and are using AI to tell what you’ve placed in them. A built-in scale weighs items, in case you have to pay by the pound for an item. Customers pay by entering a credit card, or through an online payment system. When a customer exits the store, a green light on the shopping cart indicates that their order is complete, and they’re charged.

The startups behind the smart carts, including Caper and Veeve, say it’s much easier to add technology to the shopping cart than to an entire store. Amazom's Go stores rely on hundreds of cameras in the ceiling. The shelves also include sensors to tell when an item is removed. Ahmed Beshry, co-founder of Caper, believes the technology to run Go is too expensive to use in a large­ format grocery store. Neither Caper nor Veeve have said how much their smart shopping carts will cost, making it difficult to compare the different formats. Shariq Siddiqui, CEO of Veeve, said he’s finding increased interest from retailers given Amazon’s steady expansion of Go since opening the first store in Seattle in 2018. “We’re always happy when Amazon is doing something,” Siddiqui said. “They force retailers to get out of their old school thinking.”

Each time a business uses artificial intelligence and cameras, it raises questions about customer privacy and the impact on jobs. Beshry notes that the cameras in his shopping cart point down into the cart, so only a customer’s hand and part of their arm will be captured on camera.

1.What do we know about the smart shopping carts?

A.They are linked to the cameras fixed in the ceilings.

B.They can tell customers where to find what they want.

C.They flash the green light when the order is cancelled.

D.They are able to recognize purchases placed in them.

2.What does Beshry think of the technology applied in Amazon’s Go stores?

A.It is far more expensive than their shopping carts.

B.It may increase the cost of running a store greatly.

C.It has attracted many more retailers than before.

D.It is likely to help retailers to think differently.

3.What is the best title for the text?

A.The New Technology Promotes Retail Sales

B.AI-powered Cameras Are Used in Retail Stores

C.Smart Shopping Carts Will Let You Skip the Line

D.Artificial Intelligence Affects the Future Job Market

高三英语阅读理解中等难度题查看答案及解析

How do you usually buy what you need,shopping on line or going out to shop in person?With the help of the Internet,shopping is1.(easy) than before.We can just click out mouse to choose the items we like,pay for them online,and the shopping2.(finish).It Is easy and quick.It helps save money,too.We can save thousands a year if we compare the prices of similar items before3.(decide) to buy.

However,there are always traps in shopping online.If we are4.(care),we may get into trouble.For example,we may find the color of the item different5.that in the picture online.Sometimes,the size of the item we receive can be too big6.too small.7.(avoid) such troubles,we should compare similar items on different online stores and pay more attention to what other customers say.From their comments,we can know8.(well) about an item's color, size as well as9.shortcomings.In this way we increase our chance of buying10.more satisfactory item.

高三英语完形填空困难题查看答案及解析

Imagine one day, the water taps in your house stop running. You have to buy water from shops. And still there isn’t enough for everyone. Your mother has to save the family’s shower water to do other things. Would you be able to stand that kind of life?

Probably not. But that’s what kids in Yemen are experiencing. Experts said Yemen is going to be the first country in the world to run out of water. According to a report, the capital, Sanaa, will run out of drinking water as early as 2025.

Because of the shortage, the government often cuts the water supply. Hannan, an 18-year-old from Lahej, told the Times: “In a good week we’ll have a water supply all week. But then the following week there will be water only for a day or two.”

Hannan said only rich people have enough water to use. They can buy water from the shops or from the water truck. Private companies own the trucks. They travel around the city every day to sell water – at very high prices.

“A lot of people can’t afford it,” she said.

The average person in Yemen uses 100 to 200 cubic meters of water per year. That is far below the international water poverty line of 1,000 cubic meters.

The government is thinking of making use of seawater. But it will cost a lot and it may not happen soon enough to help the people of Yemen.

1.The purpose of the text is to _______.

2.The underlined word “that” in Paragraph 2 refers to _____.

3.Hannan described _____.

4.The Yemen Government _____.

5.We can infer from the text that _____.

高三英语阅读理解中等难度题查看答案及解析

Imagine that you are sitting in a park and suddenly remember that you need to send an urgent email. You have your laptop computer with you and you connect it to a wireless access point and access the Internet. Then you send your email. This wouldn’t have been possible if there were no wireless Internet for laptops. Wireless Internet has come into our life in so many ways that we don’t even realize what a necessary part it has become of our day-to-day lives.

How do we connect to a wireless Internet service for laptop computers? There are two ways to do this. They are Wi-Fi connection and Bluetooth connection. Wireless networking is very easy. You just switch on the Wi-Fi button that has been provided in the laptop for Wi-Fi scanning. Once that is done, the computer will connect to the Internet.

An interesting fact about Wi-Fi networking is that you can create a network between similar wireless equipment. Consider a situation where you and your friend both have Wi-Fi laptops, and there is some data you want to exchange. Traditional networking architecture demands that you have a wireless router (路由器). But the beauty of Wi-Fi networking technology is that you can set up a network between you and your friend’s laptop, and share all the data you want.

Broadband (宽带) Internet connection is typically preferred by any user as it provides better speed for Internet surfing. Up until the invention of 3G mobile phones, Internet speed on mobile phones was very slow. 3G has the promise of changing the entire face of broadband technology. Just imagine browsing at speeds of more that 2MB per second. To give you a measure of the speed, 3G enables you to watch high quality live videos on the Internet.

It is amazing to see how technology changes and the rate at which it changes. There may come a time when you may be able to browse using mobile wireless Internet for laptops anywhere in the world.

1.What can we learn from Paragraph 1?

A．Wireless Internet will become a reality soon.

B．We can send emails outdoors through wireless Internet.

C．Laptops enable us to do business everywhere.

D．People can easily find a laptop to surf the Internet.

2.People can enjoy a wireless Internet service for laptop computers by .

A．connecting to another computer           B．switching off the Wi-Fi button

C．using bluetooth connection                D．connecting bluetooth to Wi-Fi

3.What should we do to share some data with a friend through Wi-Fi networking?

A．Use the same computer.                  B．Surf online.

C．Have a wireless router.                   D．Set up a network.

4.One main advantage of 3G mobile phones mentioned in the passage is ________.

A．their low price                         B．their different functions

C．their high Internet speed                 D．their bright future

高三英语阅读理解中等难度题查看答案及解析