3 . A teenager needs to have a sense of independence in their life to feel secure (安全的). To some teenagers independence means a lot to them, and I think that some parents don’t allow their teenagers enough independence.

Independence has something to do with freedom. Some kids are not allowed to go anywhere alone, and the only thing their schedule includes is going to school, coming home, going to sleep, and repeating the process the next day. Parents tend to be afraid that their kids can get hurt if they go outside into the world. But if parents control their kids too much, they may never learn to live on their own. The best way for a teenager to learn lesson is through experience. I think it is beneficial for teenagers to have freedom.

Teenagers’ lack of freedom can also stop them from having good friendship at school. Some might say this is a good thing, because it helps them focus more on their school work. I argue that this can only discourage them not to do their school work. Some parents do not allow their children to be around their friends outside the school, thinking that this will get them into trouble. But I don’t think so. Instead, isn’t this a good reason for parents to get their children a cellphone? Cellphones allow teenagers to stay in touch with their parents, and communicate with friends.

Privacy is another issue between parents and their teenagers. Teenagers tend to enjoy relaxation by themselves in their own room. This also gives them a sense of independence. It often annoys teenagers when their parents enter their room when they are not home. I know that my mom always goes in my room when I’m not home, and this has brought me to the point where I have asked many times to get a lock on my door.

1. What is the main idea of the second paragraph?

A．It benefits teenagers to have freedom.	B．Some parents allow their kids no freedom.
C．Kids know how to live independently.	D．Kids have a dull routine every day

2. In the opinion of the author, ________ .

A．it is unnecessary for a kid to have a cellphone

B．kids should focus on the school work

C．parents should make it easy for kids to communicate with their friends

D．good friendships between kids harm their school work

3. How do teenagers usually feel when their parents enter their rooms in their absence?

A．Angry

B．Lucky

C．Disappointed

D．Calm

4. The author hopes to have her door locked in order to________.

A．keep her father from reading her dairy	B．stop thieves from going in
C．protect herself from any harm	D．prevent her mother entering her room

5 . Face shape lets AI spot rare disorders

People with genetic syndromes sometimes have revealing facial features but using them to make a quick and cheap diagnosis can be _______ given there are hundreds of possible conditions they may have. A new neural network that analyses photographs of faces can help doctors _______ the possibilities.

Yaron Gurovich at biotechnology firm FDNA in Boston and his team built neural network to look at the overall impression of faces and _______ a list of the 10 genetic syndromes a person is most likely to have.

They _______ the neural network, called DeepGestalt,on17,000 images correctly labelled to match more than 200 genetic syndromes. The team then asked the Al to _______ potential genetic disorders from a further 502 photos of people with such conditions. It included the correct answer among its list of 10 responses 91 per cent of the time.

Gurovich and his team also _______ the neural network’s ability to distinguish between the different genetic mutations(变异) that can lead to the same syndrome. They used photographs of people with Noonan syndrome, which can result from mutations in any one of five genes. DeepGestalt correctly identified the genetic source of the physical appearance 64 per cent of the time. It’s clearly not _______ but it’s still much better than humans are at trying to do this.

As the system makes its assessments, the facial regions that were most helpful in the determination are _______ and made available for doctors to view. This helps them to understand the relationships between genetic make-up and physical appearance.

The fact that the diagnosis is based on a simple photograph raises questions about_______. If faces can reveal details about genetics, then employers and insurance providers could, in principle, secretly use such techniques to ________ against people who have a high probability of having certain disorders. ________, Gurovich says the tool will only be available for use by clinicians.

This technique could bring________ to those who have genetic syndromes. The real value here is that for some of these ultra-rare diseases, the ________ of diagnosis can be many, many years. This kind of technology can help narrow down the search space and then ________ the diagnosis through checking genetic markers. For some diseases, it will cut down the time to diagnosis dramatically. For others, it could perhaps add means of finding other people with the disease and, ________ help find new treatments or cures.

1.

A．convincing

B．tricky

C．reliable

D．feasible

2.

A．bring about

B．result from

C．narrow down

D．rule out

3.

A．return

B．input

C．top

D．feed

4.

A．based

B．imposed

C．focused

D．trained

5.

A．identify

B．distinguish

C．shift

D．cure

6.

A．tested

B．demonstrated

C．recognized

D．acquired

7.

A．acceptable

B．perfect

C．reliable

D．workable

8.

A．covered

B．excluded

C．highlighted

D．supervised

9.

A．objectivity

B．accuracy

C．credibility

D．privacy

10.

A．discriminate

B．fight

C．argue

D．vote

11.

A．Furthermore

B．Therefore

C．Otherwise

D．However

12.

A．challenges

B．benefits

C．damages

D．concerns

13.

A．treatment

B．response

C．remedy

D．process

14.

A．replied

B．confirmed

C．eliminated

D．addressed

15.

A．by contrast

B．in turn

C．in addition

D．on the contrary

6 . As Internet users become more dependent on the Internet to store information, are people remember less? If you know your computer will save information, why store it in your own personal memory, your brain? Experts are wondering if the Internet is changing what we remember and how.

In a recent study, Professor Betsy Sparrow conducted some experiments. She and her research team wanted to know the Internet is changing memory. In the first experiment, they gave people 40 unimportant facts to type into a computer. The first group of people understood that the computer would save the information. The second group understood that the computer would not save it. Later, the second group remembered the information better. People in the first group knew they could find the information again, so they did not try to remember it.

In another experiment, the researchers gave people facts to remember, and told them where to find the information on the Internet. The information was in a specific computer folder (文件夹). Surprisingly, people later remember the folder location (位置) better than the facts. When people use the Internet, they do not remember the information. Rather, they remember how to find it. This is called “transactive memory (交互记忆)”

According to Sparrow, we are not becoming people with poor memories as a result of the Internet. Instead, computer users are developing stronger transactive memories; that is, people are learning how to organize huge quantities of information so that they are able to access it at a later date. This doesn’t mean we are becoming either more or less intelligent, but there is no doubt that the way we use memory is changing.

1. The passage begins with two questions to ________.

A．introduce the main topic	B．show the author’s attitude
C．describe how to use the Internet	D．explain how to store information

2. What can we learn about the first experiment?

A．Sparrow’s team typed the information into a computer.

B．The two groups remembered the information equally well.

C．The first group did not try to remember the formation.

D．The second group did not understand the information.

3. In transactive memory, people ________.

A．keep the information in mind

B．change the quantity of information

C．organize information like a computer

D．remember how to find the information

4. What is the effect of the Internet according to Sparrow's research?

A．We are using memory differently.

B．We are becoming more intelligent.

C．We have poorer memories than before.

D．We need a better way to access information.

7 . A 293-million-mile journey of the NASA Perseverance rover (探测器)to Mars ended successfully on February 18th, 2021, with a picture-perfect landing inside the Jezero Crater. The car-sized, six-wheeled rover, nicknamed Percy, is the US space agency’s biggest and most advanced explorer to date. Its primary mission is to search for signs of ancient microbial(微生物的)life on Mars.

Landing on Mars is extremely tricky. The Red Planet’s gravitational(引力的) pull causes approaching spacecraft to go faster to high speeds, while its thin atmosphere—just one percent that of Earth’s—does little to help slow it down as it approaches the surface.

The scientists had to reduce Percy’s 12,000 mph speed to a safe landing speed of less than five mph—in just six and a half minutes. The target entry angle also had to be a precise 12 degrees—any steeper, and the spacecraft would burn up; any flatter, and it would get lost in space. It is no wonder that the final approach is often referred to as the “seven minutes of terror”.

Upon attaining a manageable speed, Percy briefly flew over the Martian surface to seek out the perfect landing spot. Its complex map-reading system rapidly scanned the area and matched it with maps in its database to find the best location.

The NASA scientists will spend the next two months testing Percy’s scientific instruments. Once ready, the rover will begin to carry out its mission.

“Perseverance is the smartest robot ever made, but confirming that microbial life once existed carries an unusually large burden of proof,” said Lori Glaze, director of NASA’s Planetary Science Division.“ While we’ll learn a lot with the great instruments we have aboard the rover, it may very well require the far more well-equipped laboratories and delicate instruments back here on Earth to tell us whether our samples(样本)carry evidence that Mars once harbored life.”

1. What is the extraordinary challenge for the rover to land on Mars?

A．The speed reduction.

B．The atmosphere analysis.

C．The location search.

D．The time management.

2. What is paragraph 3 mainly about?

A．Ways to find the precise entry angle.

B．Consequences of wrong entry degree.

C．Factors to survive “the seven minutes”.

D．Reasons for the necessity of speed reducing.

3. What does the underlined word “it” in paragraph 4 refer to?

A．The space.	B．The area.
C．The system.	D．The surface.

4. What can be inferred from Lori Glaze’s words?

A．Instruments aboard the rover are not quite reliable.

B．Perseverance is able to collect enough evidence needed.

C．Man still has a long way to go to prove there was life on Mars.

D．Samples of Mars will be returned soon to the labs on the Earth.

9 . Every year, Time magazine picks out what it calls “The 25 Best Inventions” of the year. Here, Teens has chosen some of the most interesting ones.

Ember Mug

It’s hard to always keep coffee at the right temperature, especially in winter. It’s too hot to drink at first, but before we know it, it gets too cold and loses all its taste. The perfect level of warmth for a cup of coffee only lasts for 37 seconds, which makes the Ember Mug a great invention. It keeps your coffee or tea at a certain temperature, anywhere between 45℃ and 62℃, once you set it through a smartphone app.

Tasty One Top

TV cooking shows make cooking look so easy, but it’s almost impossible to get the recipes to cook the same as how the professionals cook. However, the Tasty One Top DIY cooking companion is here to help. Developed by BuzzFeed, the cooker can be connected to a smartphone app, which has more than 1,700 recipes and videos. You choose a recipe and the app will let the cooker know what to do. For example, it’ll tell you when to turn your steak or when to add certain ingredients.

Jibo

Smart speakers from companies like Amazon and Xiaomi have added a lot of fun to our lives, but they’re still just faceless speakers. However, Jibo, developed by MIT professor Cynthia Breazeal, has brought smart technology to life. Said to be “the world’s first social robot for the home”, Jibo looks like a cartoon character. Inside its “head”, there are various sensors and cameras, which allow it to recognize faces and speech. It can also set alarms, remind you of important things, tell you the weather and read news or messages from your friends and family.

1. How can Tasty One Top help people?

A．By teaching people how to cook.	B．By offering people different recipes.
C．By saving energy while cooking.	D．By offering different kinds of cooking apps.

2. What can Jibo probably be?

A．A cartoon character.

B．A faceless robot.

C．A family assistant.

D．A smart alarm.

3. What is the purpose of the passage?

A．To advertise hightech products.	B．To introduce some new inventions.
C．To encourage subscription to Time.	D．To tell about some “tasty” products.