Storing food is common in members of the crow family. A new study tested the birds outside for this naturally occurring behavior, which may have evolved（进化）specifically because it gives crows a survival advantage. Some crow species are known to naturally use tools to recover food. So the researchers tested whether the birds could store and recover a tool so they could use it to find their food after a gap of 17 hours — something we wouldn’t expect them to do naturally. But they were able to instantly select the tool out of a number of unnecessary items.

In another experiment, the researchers taught crows to select a token（礼品券）from a number of items so that they could then exchange it for food. Again, the birds then showed that they could plan for the future using this new behaviour. This is different from all of the previous studies in future planning, which have focused on naturally occurring behaviour. For example, we know that chimpanzees select, transport and save appropriate tools for future needs.

These studies have shown that animals can plan for the future — but they leave an important question open for debate. Are animals only able to plan to use abilities that have evolved to give them a specific advantage, or can they flexibly and intelligently apply planning behaviour across various actions? Most critics would say the former, as the animals were tested in naturally occurring behaviour.

But the new research provides the first evidence that animal species can plan for the future using behaviour that doesn’t typically occur in nature. This supports the view that at least some recognitive（认知的）abilities in animals don’t evolve just in response to specific problems. Instead, it suggests that animals can apply these behaviour flexibly across problems in a similar way to humans. We need to study how flexible behaviour evolved. Then we might be able to see how crows’ ability to plan for the future fits in with their broader cognitive powers.

【小题1】What’s the new finding about some crows according to Paragraph 1?

A．They can store food.	B．They can use tools to recover food.
C．They can store and recover tools.	D．They can select and store food.

【小题2】What are crows trained by researchers to do when given a token?

A．Reject it casually.	B．Exchange it for food.
C．Save it as their food.	D．Build a nest with it.

【小题3】What can we infer about the studies that animals can plan for the future?

A．They are debatable.	B．They are disappointing.
C．They are logical.	D．They are convincing.

【小题4】What can be learned about flexible behaviour in animals?

A．It develops only with age.	B．It is unclear how it evolved.
C．No animals but crows benefit from it.	D．It helps plan for the future.

   Technological innovation（创新）may not give you a warm feeling. 【小题1】 Messaging apps are examples of technology that is helping bring people together. It’s ready to continue improving our lives as innovation allows technology to really understand how we live.

【小题2】

Some of the most popular and widely adopted innovations make things we’re already doing easier. A well-designed piece of technology can transform something that consumes time into a worry-free touch of your finger, giving you more time to spend with friends and family.

Proving that you really are you

Developers keep finding new and brilliant ways to prove our identities online. With fingerprints and voice recognition, technology keeps getting better at proving we are who we say we are. 【小题3】 .The more trust we have, the easier it will be to fully welcome the aspects of fintech（金融科技）and have control of our financial data.

Helping make good ideas a reality

Crowdfunding（众筹）technology keeps breaking down walls that may have previously kept good ideas from being realized. Here’s how it works: You throw your project to people through an online platform. 【小题4】 . By connecting dreamers and inventors to a new type of capital, technology is giving more creative ideas the opportunity to become a reality.

Adding even more quality to quality time

As technology continues improving, it becomes easier to build and keep a connection with someone who isn’t in the same location as you. 【小题5】 . And think about how great it will be when you can communicate with your friends and relatives in virtual reality. It will be the next best thing to be together in person.

A．Sparing some time to make friends

B．Freeing up more time for friends and family

C．However, when at its best, it opens our eyes to many things

D．Actually, it can do wonders to deepen our interpersonal connections

E．Think about how much easier it is to have a video meeting than before

F．This can make it easier to trust the connections we make online

G．If they are interested in your project, they donate money to fund your project

   We all know the keys to living longer：eating healthily，exercising daily，and avoiding bad lifestyle habits，but do you know that practicing these simple steps when you’re 50 and older can add more years to your life？

According to a new research conducted by Harvard University scientists，adults who follow five healthy habits which include never smoking，maintaining a body mass index（BMI）（体重指数）below 30，exercising for at least 30 minutes a day，drinking alcohol only reasonably，and following a well-balanced diet，can add a decade or more to their lifespan.

The study，published in the American Heart Association’s journal Circulation，suggests that men over age 50 who follow these five lifestyle habits can add up to 12 years to their lives while women who follow these healthy habits can add 14 years to their lifespan. While the method of living a longer and healthier life hasn’t changed much over the years，this new information regarding the benefits of working out and eating healthily later in life is a bit of a breakthrough in terms of how we look at aging.

Modern medicine often treats the elderly with a more reactive approach，focusing on discovering and creating medicines and therapies to combat（防止）life-threatening illnesses like cancer and especially heart disease. According to scientists who conducted this study，the focus should be on preventative（预防的）measures，making sure aging adults are adapting healthy habits before they reach a stage in life when health issues normally arise.

It is very important to put prevention through diet and lifestyle changes first. Heart disease and cancer are the leading causes of death in the United States，while heart disease in particular can arise because of certain lifestyle habits. One of those habits is smoking，which scientists said was the biggest determining factor in a person’s lifespan. Researchers found that there was a direct connection between an adult’s risk of early death and his lifestyle habits，with those following all five of the healthy habits enjoying significantly longer lives.

【小题1】What is the question in the first paragraph intended to do?

A．To provide some advice for readers.

B．To predict the following paragraphs.

C．To introduce the topic of discussion.

D．To offer some background information.

【小题2】What is the most important in fighting against life-threatening illnesses?

A．Developing new therapies.

B．Discovering new medicines.

C．Applying effective prevention.

D．Following a well-balanced diet.

【小题3】Which of the following is the biggest threat to a person’s lifespan?

A．Smoking.	B．Lack of exercise.
C．Drinking heavily.	D．Unbalanced diets.

【小题4】What is the text mainly talking about?

A．A healthy lifestyle determines humans’health.

B．Healthy lifestyles help the older lengthen their lifespan.

C．How to live a healthy lifestyle.

D．Bad lifestyles increase people’s risk of early death.

Things Your Pilot Won't Tell You
You may not be getting the airline you paid for．
You may go to an airline website and buy a ticket, and get onto an airplane that has a similar name painted on it, but half the time, you're really on a regional （地方的） airline．The regionals aren't held to the same safety standards as the majors: their pilots aren't required to have as much training and experience, and the public doesn't know that．
—Captain at a major airline
If you're a nervous flier, book a morning flight．
The heating of the ground later causes bumpier （颠簸的） air, and it's much more likely to thunderstorm in the afternoon．
—Jerry Johnson , pilot, Los Angeles
The smoothest place to sit is often over or near the wing．
The bumpiest place to sit is in the back．If you're in the middle, you don't move as much．
—Patrick Smith, pilot, and author of Cockpit Confidential
Sit in the front if you want fresher air．
The general flow of air in any airplane is from front to back．So if you're really concerned about breathing the freshest possible air or not getting too hot, sit as close to the front as you can．Planes are generally warmest in the back．
—Tech pilot at a regional airline, Texas
You never know where the safest seat is．
There is no safest place to sit．In one accident, the people in the back are dead; in the next, it's the people up front．
—John Nance, aviation safety analyst and retired airline captain, Seattle
I've been struck by lightning twice．
Most pilots have．Airplanes are built to take it．You hear a big boom and see a big flash and that's it．You're not going to fall out of the sky．
—Charlotte, pilot for a regional earner,．North Carolina
People don't understand why they can't use their cell phones．
Well, what can happen is 12 people will decide to call someone just before landing, and I can get a false reading on my instruments saying that we are higher than we ideally are．
—Jim Tilmon, retired American Airlines pilot, Phoenix
【小题1】Jerry Johnson advises nervous fliers to ______．

A．sit in the back

B．fly in the morning

C．fly with major airlines

D．avoid flying in bad weather

【小题2】The best seats for those who need fresh air are ______．

A．in the front	B．in the middle
C．in the back	D．near the wing

【小题3】Passengers' use of cellphones before landing is likely to ______．

A．increase the risk of being struck by lightning

B．make it difficult for pilots to control the plane

C．cause the instruments of the plane to break down

D．affect pilots' judgment about the height of the plane

There are many wetlands in China and some of them have become the world’s important wetlands. The Chinese Yellow Sea Wetlands are among them. They are in Yancheng, Jiangsu Province. They are home for many different kinds of birds and animals. The world’s largest Milu Deer Nature Reserve(麋鹿自然保护区) is in them. More than 700 Milu deer live freely there. There are not many red-crowned cranes（丹顶鹤）in the world, but every winter you can see some in the Red-crown Cranes Nature Reserve in the Yellow Sea Wetlands.
The temperature in the wetlands is usually neither too high nor too low. There is a lot of rain and sunshine, too. They are really good places for wildlife. Offering food and home for some special kinds of animals and birds is not the only reason why we need to protect wetlands. Wetlands are important because they also prevent flood. But some people want to change the wetlands to make more space for farms and buildings. This means there will be less and less space for the wildlife.
Luckily, more and more people are beginning to realize the importance of wetlands and wildlife. Every year, on February 2^nd, many activities are held to tell people more about wetlands.
【小题1】The Yellow Sea Wetlands are in the ________ part of China.

A．Northeast	B．northwest
C．southeast	D．southwest

【小题2】What is the weather usually like in the wetlands?

A．Hot

B．Dry

C．Cold

D．Mild

【小题3】When is the World Wetlands Day?

A．On June 25th.	B．On April 22nd.
C．On March 23rd	D．On February 2nd.

【小题4】What is the best title for the text?

A．Wetlands ---- Valuable Land on the Earth

B．China’s Wetlands Are in the World’s List

C．Wetlands ---- Home for Wildlife and Human Beings

D．Special Animals in the Chinese Yellow Sea Wetlands