Bees and other pollinators（传粉者）  use smells to track down fresh flowers. Air pollutants can weaken those scents（气味）.  Scientists had worried this might make it harder for some pollinators to find a meal.

    Many animals help pollinate plants. Species that do this include bees, butterflies, etc. But for many reasons, the pollinators available to help plants in this way are decreasing. Scientists think a loss of habitat（栖息地）can be one factor. Diseases and exposure to poisonous chemicals also count.

    Jose Fuentes points to air pollution as another possible factor. He's an atmospheric scientist at Pennsylvania State University. In an earlier study, he showed some air pollutants could weaken or destroy scents emitted(发出)by flowers.

    Searching for a meal leaves pollinators out in the open and at risk of becoming other animal's lunch. And any time spent hunting food is time away from their duties back home, like protecting a hive（蜂巢）or nest, explains T'ai Roulston. He's an insect biologist at Virginia University. Roulston worked with Fuentes on the new study.

    In the study, the researchers focused on five kinds of representative scent molecules(分子)plants emit. One molecule they looked at, for example, is called beta-myrcene. Many flowers give off this chemical into the air.  Normally, this gas can travel some 800 meters from its flower source. But in polluted air, this same molecule could travel only half as far.

    Worse still, air pollution might do more than just weaken scent plumes（气味烟云）．Chemical reactions between air pollutants and plumes may transform the flowers' smells, creating new scents. And these scents may be unrecognizable to pollinators.

    That's certainly Fuentes' concern.  So, he says his next research project will look at how insects handle any new flower scent. "It's possible that some insects will change ways to detect and use these new molecules to find food," he says.

    My husband David was waiting at the door when our daughter Laura and I pulled in the driveway. It wasn't like him to be home so early. The disbelief on his face told me that something was up.

    "Do you still have a job?"

    "No. Redundant," he answered, looking away from me.

    "OK. We'll figure it out," I replied calmly.

    I actually had no idea how we were going to figure it out. I immediately started to think of how we'd cut costs and who we should start to get in touch with. That night, after David had fallen asleep, I cried myself to sleep, and frequently sobbed in the shower in the days that followed.

    I knew the loss of David's income would have great effect on us. He had worked for the same insurance company for twenty-one years and was our main income. I work at home caring for Laura, and my freelance(自由职业者的)income is uncertain. We have debts, and job hunting takes time.

    Still, I was more concerned about my husband's emotional state than our financial situation. David's sense of identity was tied to his job. He called his parents to tell them about losing his job, but didn't say a word to anyone else for weeks. He told me that he felt like "a failure".

It was tough for me to watch David struggle with unemployment. One night a couple of weeks after he lost his job, David woke me just before midnight, sweating, pacing the bedroom floor and saying he felt funny. We spent the night in the emergency room waiting to see if he had a heart attack. Thankfully, it was just a serious anxiety attack. It was then that I knew I needed to do more to understand what my husband was going through. Here is what I learned from my own experience—and from talking to experts—on how to support your spouse through a job loss.

    Young people can have problems with their minds. Some students become worried because they have to study very hard. Others have trouble getting on well with people like their parents and classmates.

    Li Wen, a junior 2student from No.2Middle School, could not understand his teacher and was doing badly in his lessons. He became so worried about it that he started to cut his finger with a knife. Another student16yearold Yang Fang from No.1Middle School, was afraid of exams. She got very worried in one and when she looked at the exam paper, she couldn't think of anything to write.

    A recent report from Jiefang Daily says about 18% of Shanghai teenagers have mental problems. Their troubles include being worried and very unhappy and having problems in learning and getting on with people. Many students who have problems won't go for advice or help. Some think they will look stupid if they go to see a doctor. Others don't want to talk about their secrets Liang Yuezhu, an expert on teenagers from Beijing Anding Hospital has the following advice for teenagers：

    Talk to your parents or teachers often.

    Take part in group activities and play sports.

    Go to see a doctor if you feel unhappy or unwell.

    A small school in rural India is gaining attention over the fact that all 300 students are ambidextrous(左右手都灵巧的). Data shows that only one percent of the global population is ambidextrous, but the ambitious founder of Veena Vandini School, in Madhya Pradesh, is aiming to change that, starting at a local level.

    A former soldier and Veena Vandini School founder VP Sharma stated that he was inspired to focus on ambidexterity training by India's first president Rajendra Prasad who was in office from 1950 to 1962. Unexpectedly, the president was ambidextrous. "I read in a magazine that Dr. Rajendra Prasad, India's first president, used to write with both hands. This inspired me to give it a try, “Mr. Sharma said.”Later when I launched my school at my native village, I tried training the students. "

    "We begin training students from standard Ⅰ and by the time they reach standard Ⅲ, they are comfortable writing with both the hands,” Sharma added. "Students of up to standard Ⅶ can write with speed and accuracy. Further, they can write two scripts at the same time, one with each hand. Students also know several languages, including Urdu."

    Every 45-minute class at Veena Vandini includes 15 minutes devoted to handwriting practice, ensuring that every student develops the ability to write with both hands. VP Sharma also believes that the skill better enables students to learn multiple languages, and has them practice writing the same words in different languages at the same time. Although it is widely believed to help increase concentration, more recent studies have found that this is false and studying to become ambidextrous can, in fact, harm cognitive development.

    A Scientific American study revealed that ambidextrous children performed worse than left- or right-handers on a range of skills, especially in math, memory, and logical reasoning. A study in northern Finland indicated that children who are ambidextrous are much likelier to develop mental health issues, including ADHD, language problems, and academic problems.

    LaVonn was helping out in her dad's store when a little boy, about five or six years old, came in. He was wearing a brown and oversized coat with dirty, old clothes beneath it. His shoes were broken, and only one had lace (鞋带). The boy looked around the store, picked up several items, examined them one by one and then carefully put them back on the shelf.

    LaVonn's dad walked over to the child and asked if he could help. The little boy said, "I'm looking for a gift for my brother." After 20 minutes, the child picked up a toy airplane. He held it carefully in his hands as if it were made of glass and carried it to LaVonn's father.

    "How much is this?" he asked. "My brother loves airplanes." LaVonn's dad answered, "How much money do you have?" The little boy reached into his coat and pulled out some small change (零钱). He spread his money out on the table and began to count. "I have twenty-seven cents," he answered. Her dad picked up the coins and said, "The airplane costs exactly twenty-seven cents! Wait here and I'll pack it up for you."

    The little boy walked out of the store with the gift and a smile of total satisfaction on his face. LaVonn made her way back to the shelf and she found the plane was priced at $11.98.She never mentioned it to her father. Her father didn't say anything more about it either, but she realized later, "My best gift that Christmas was seeing my dad's love in action."

Latin is considered as a dead language by some people, but a little {#blank#}1{#/blank#} (many) disagree. They think that Latin is not dead because news {#blank#}2{#/blank#} (report) by the Roman Catholic Church in Latin regularly. While its use is still taught, Latin is no {#blank#}3{#/blank#} (long) considered to be a developing language to the degree of most modern languages. There are many reasons {#blank#}4{#/blank#} Latin is dying out. The most important one has to do with the fall of the Roman Empire. During the Roman period, Rome was the most {#blank#}5{#/blank#}(power) country in the Western world, so most of those {#blank#}6{#/blank#} wanted to succeed tried to learn Latin. As a result, the language developed quickly. But that rapid {#blank#}7{#/blank#} (develop) slowly stopped. Latin continued to be used during the Middle Ages. Throughout Europe, it remained the language of choice. However, there was no need {#blank#}8{#/blank#} a standard language, so Latin began to change when different {#blank#}9{#/blank#} (area) developed their own languages over a period of hundreds of years, of which the most {#blank#}10{#/blank#} (common) spoken are Spanish, Portuguese, Italian and French.