When life takes you away from home, take technology to help guide and entertain you. Apps can help make your trip easier and more fun. Travel apps are very helpful to guide you on your trip. Some apps help you plan your trip and others help you travel.

TripIt

TripIt is a helpful app to organize travel plans. Sign up for a free account at the TripIt website and download the app to have all of your travel plans handy in one place.

TripIt will create a travel plan that will be shown in the TripIt app on your phone. No need to hunt down emails when it is time to travel. Everything will be in one place, on the TripIt app.

TripIt is free but a paid version is available that has more functions.

Google Translate

When traveling outside your home country, you may need some language help. Google Translate is an app that can help you understand a language other than your native tongue.

The Google Translate app translates between 103 different languages. Copy text into the app to see a translation. You can also handwrite text onto the screen. Use your phone's camera to see a translation of signs. Point the lens at words to see the translation on the phone's screen. The app works even without an Internet connection.

Google Translate is available for free.

OpenTable

OpenTable is a restaurant reservation app to help users discover and make reservations at restaurants. Search by location, cooking, reviews and prices.

OpenTable includes 31,000 restaurants around the world. Check the app to find information and make reservations within the app.

OpenTable is available free for Android and iPhone and iPad.

The desert locust (蝗虫) is the most dangerous migratory pest with a huge appetite unmatched in the insect world. In just one day, a swarm of locusts the size of Paris could consume the same amount of food as half the population of France. They annually reproduce, concentrate and then form swarms that can move up to 150 kilometers per day.

To control these swarms, some experts think drone (无人机) technology could provide survey and control teams with an inexpensive and efficient method of searching for these destructive insects.

Unmanned aerial vehicles (UAVs) — also known as drones — could be used to automatically collect high-resolution imagery of green, vegetated areas potentially affected by locusts.

Controlled by a hand-held tablet, the UAV would follow a pre-programmed flight path, covering a 100 kilometer survey radius to collect data. Then the survey teams use the data to identify areas that seem most likely to harbor locusts and travel directly to suspicious locations. Once the team reaches such an area, the UAV could be launched to fly overhead and identify other nearby areas affected by locusts that may require treatment. A separately controlled UAV could then be used to administer pesticides directly onto the locust concentrations. UAVs could also be used to check for locusts in areas that are insecure or cannot be accessed by ground teams.

Pest control operations would become safer, as human operators would no longer be exposed to potentially dangerous pesticides while getting rid of the insects. They would also become more effective, since drones would be able to spray pesticides precisely.

The Food and Agriculture Organization (FAO) of the United Nations is currently working with university researchers and private sector partners in Europe to address challenges of drone technology concerning design, endurance, power, and detection of green vegetation and locusts. The FAO remains hopeful that within five years, UAVs will play an essential role in protecting food supplies and livelihoods from the desert locust, as part of the fight against global hunger and poverty.

Dolphins are universally regarded as some of the cleverest creatures in the world. In captivity (圈养), they can be trained to complete complex tasks such as jumping through hoops and somersaulting through the air.

But their intelligence doesn't stop there. In a recent study of cetaceans (鲸目动物)--a group of animals that includes dolphins and whales--researchers created a list of intelligent behaviors observed in 90 different cetacean species, reported the Guardian. For example, the smartest cetaceans hunt in groups, share knowledge through mimicry (模仿) and even care for each other's children. Some even consider their behavior to be human-like.

"There is the saying that 'it takes a village to raise a child' seems to be true for both whales and humans," Michael Muthukrishna of the London School of Economics, co-author of the study, told the Guardian.

However, cetaceans don't just use their brain power for survival. The study suggests that dolphins might even gossip. That's because some species greet each other with specific whistles, just as humans greet each other by name, the Guardian reported. Sometimes, a group of dolphins whistles the "name" of a dolphin that isn't there. Could they be speaking about their "friend" behind its back?

For the researchers, dolphins' small talk is a big deal. As they found that the most social cetaceans also have the largest brains, they argue that cetacean intelligence developed to meet the demands of complex social groups.

Known as the "cultural brain hypothesis (假设)," it had only been used to explain the intelligence of humans and other primates (灵长目动物). The new study aimed to find a common pathway for the evolution of intelligence among biologically different species.

"It is interesting to think that whale and human brains are different in their structure but have brought us to the same patterns in behavior," Luke Rendell, a biologist at the University of St Andrews, told the Guardian.

Indeed, we still have a lot to learn about our intelligent ocean-dwelling neighbors. "We don' t have to look at other planets to look for aliens," Muthukrishna told the Guardian, "because we know that underwater there are these amazing species with so many parallels to us in their complex behaviors."

Researchers from North Carolina State University have designed an artificial intelligence (AI) model that is better able to predict how much students are learning in educational games. The improved model, which uses an AI training concept named multi-task learning, could be used to improve both instruction and learning outcomes.

"We wanted the model to be able to predict whether a student would answer each question on a test correctly, based on the student's behavior while playing an educational game called Crystal Island," says Jonathan Rowe, co-author of a paper on the work.

"The standard approach for solving this problem looks only at overall test score," Rowe says. "In our multi-task learning framework, the model has 17 tasks — because the test has 17 questions."

The researchers collected gameplay and testing data from 181 students. The AI could look at each student's game- play and how each student answered Question 1 on the test. By identifying common behaviors of students who answered Question 1 correctly, and those of students who got Question 1 wrong, the AI could determine how a new student would answer Question 1.

This function is performed for every question at the same time. The gameplay being reviewed for a given student is the same, but the AI looks at that behavior in Question 2, Question 3, and so on.

The researchers found that the multi-task model was about 10 percent more accurate than other models that relied on conventional AI training methods.

"We expect that this type of model could tell teachers when a student's gameplay suggests the student may need additional instruction. It's also expected to facilitate adaptive gameplay features in the game itself. For example, altering a storyline in order to revisit the concepts that a student is struggling with." says Michael Geden, first author of the paper.

"Psychology has long recognized that different questions have different values," Geden says. "Our work here takes an interdisciplinary (跨学科的) approach that marries this aspect of psychology with deep learning and machine learning approaches to AI."

"This also opens the door to incorporating more complex modeling techniques into educational software." says Andrew Emerson, co-author of the paper.

Rejection doesn't have to be about the big stuff like not getting into your top college. Everyday situations can lead to feelings of rejection, too, like if your joke didn't get a laugh, if no one remembered to save you a seat at the lunch table, or if the person you really like talks to everyone but you. Rejection hurts. But it's impossible to avoid it altogether. The only thing we should do is to learn to handle it.. So how can you build that ability?

Be Honest About Your Feelings

If you get rejected, admit how intense your feelings are. Don't try to brush off the hurt or pretend it's not painful. Then, move on to name what you're feeling. For example: "I feel really disappointed that I didn't get chosen for the school play. I wanted it so badly and I tried so hard. I feel left out because my friends made it and I didn't.".

Examine Your Thought Soundtrack

When you are rejected, it's natural to wonder, "Why did this happen?" When you give yourself an explanation, be careful to stick to the facts. Tell yourself: "I got turned down for prom because the person didn't want to go with me." Don't tell yourself: "I got turned down because I'm not attractive" or "I'm such a loser.". Next time, if put-down thoughts start creeping into your mind, shut them down.

A rejection is a chance to consider if there are things we can work on. It's OK to think about whether there's room for improvement or if your goals were higher than your skills.. But if you approach it right, it could help nudge you in a direction that turns out to be the perfect fit for your talents, personality, and all the really great things that make you who you are.

A. Be Patient When Rejected.

B. Use Rejection to Your Advantage.

C. Sometimes a rejection is a harsh reality check.

D. The better we get at dealing with rejection, the less it affects us.

E. This kind of thinking crowds out hope and a belief in ourselves.

F. Acknowledging feelings helps you move beyond painful emotions.

G. Feeling trapped on the negative feelings can feel like living the experience over and over again.

Some of the greatest problems we face today are concerned with the gradual destruction of our environment. Brown clouds; wildlife 1; polluted water. These 2  all seem so huge. So my family does what we can. We take cloth bags to stores instead of using plastic bags. We walk where we don't have to3.

But does it do any good?

I recently learned something about flamingos. These beautiful birds gather in4 groups of a thousand or more. Every year, when the time 5 for migration, a few flamingos start the process by taking off from the lake.  But 6  of the others seem to notice, so the tiny group returns.

However, the next day they 7  again. This time a few more struggle along with them, but the vast majority still8 no attention, so these pioneers come back.

The9  continues for several more days. Every time a few more birds join in but,

10  the thousands of others still take no 11 , the great migration plan is once again  12.

Then one day something13. The same small group of birds takes wing and a tiny number more join in, just as before. And this time their total number, though still quite 14, is enough to tip the balance. As one, the whole group takes flight and the migration15. What a16 sight it must be – thousands of flamingos taking to the sky at once!

A few can make a17. It's true that all of the great problems of the world have been solved because of the18 efforts of a few.

If you believe in a cause, don't 19! Others will someday take notice and together we will20 even our greatest problems.

(CNN) Food labels detailing how much exercise is needed (burn) off a product's calorie content could help to combat obesity, according to UK researchers.

Physical activity calorie equivalent (PACE) labels could improve on labels   identify only calories and nutrient content, according to a new (science) review.

Under the proposed system, a small bar of chocolate would carry a label informing (consume) that it would take 23 minutes of running or 46 minutes of walking to burn off the 230 calories it contains.

The large-scale application of PACE labels could, on average, cut calorie use 200 calories per person per day, according to researchers, work is published in the Journal of Epidemiology and Community Health.

But concerns (raise) recently about the potential impact such labeling might have on, people with eating disorder.

The research team looked at data from 14 studies that examined the effectiveness of PACE labeling in   (reduce) calorie consumption and found that PACE labeling is more effective than no labeling. Amanda Daley, lead researcher from the University of Loughborough, told CNN that   aim is to add PACE information to existing labels, rather than replace   (they), in order to provide the public with more information.

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1．每处错误及其修改均仅限一词;

2．只允许修改 10 处，多者（从第 11 处起）不计分。

I was frightening in my first class in the US. It was my first time to sit with so much foreigners in one classroom. Unlike other classmates, I sat quietly by me. My teacher spoke very fast and I had a hard time understanding him. Since I was a newcomer in a foreign country, communicating with these foreigners was really difficulty. However, I had to try hard to understand that they were talking about in class. But reading and writing was even harder than listening and speaking. Just one month after the school started, I had to read books and write long

paper, all English. That's when the real disaster to began.

1）介绍牛的用途；

2）说明牛的精神；

3）表达牛年祝福。

注意：

1）词数 100 左右；

2）可以适当增加细节，以使行文连贯。