Nowadays more and more people are talking about geneticallymodified foods ( GM foods). GM foods develop from genetically modifiedorganisms (有机体), which havehad specific changes introduced into their DNA by genetic engineeringtechniques. These techniques are much more precise where an organism is exposedto chemicals to create a non­specific but stable change. For many people, thehigh­tech production raises all kinds of environmental, ethical, health andsafety problems. Particularly in countries with long farming traditions, theidea seems against nature.

In fact, GM foods are already very much a part of our lives.They were first put on the market in 1996. A third of the corn and more thanhalf the cotton grown in the U. S. last year was the product of biotechnology,according to the Department of Agriculture. More than 65 million acres ofgenetically modified crops will be planted in the US this year. The geneticgenie is out of the bottle.

However, like any new product entering the food chain, GM foodsmust be subjected to careful testing. In wealthy countries, the debate aboutbiotech is not so fierce by the fact that they have a large number of foods tochoose from, and a supply that goes beyond the needs. In developing countriesdesperate to feed fast­growing and underfed populations, the matter is simplerand much more urgent: do the benefits of biotech outweigh the risks?

The statistics on population growth and hunger are disturbing.Last year the world's population reached 6 billion. The UN states that nearly800 million people around the world are unhealthy. About 400 million women ofchildbearing age don' t have enough iron, which means their babies are exposedto various birth defeats.As many as 100 million children suffer from vitamin Adeficiency, a leading cause of blindness.

How can biotech help? Genetic engineering is widely used toproduce plants and animals with better nutritional values. Biotechnologistshave developed genetically modified rice and they are working on other kinds ofnutritionally improved crops. Biotech can also improve farming productivity inplaces where food shortages are caused by crop damage attributable to drought,poor soil and crop viruses.

    The United Arab Emirates (UAE) is mostly a desert. However, this has not stopped the country from creating great building projects. On September 26, UAE officials announced another ambitious project — Mars Science City. Expansive deserts and miles of coastline provide plenty of options for safe rocket launches (发射). And its position on the Earth makes it especially appealing as the spin of the Earth provides an extra push, meaning less fuel is needed to get payloads into orbit. All these seem to make it possible.

    The Mars City Project, designed by Bjarke Ingels Group, or BIG, will provide a realistic model to simulate (模仿) living on the surface of Mars, the red planet. It is part of the UAE's Mars 2117 Project to lead the global race to land humans on Mars and be the first to build a settlement there. Sheikh Mohammed bin Rashid, Prime Minister and ruler of Dubai, says, “The UAE seeks international support to develop technologies that benefit humans, and lay the foundation of a better future for more generations to come.”

    Built outside Dubai, the 1.9 million square feet city is expected to cost $135 million. It will consist of several dome-shaped laboratories, similar to the ones imagined for the first Mars settlers. Scientists from around the word will be invited to conduct research to come up with methods to create food, water and energy, using techniques which can be copied onto the red planet. The living spaces, where the researchers can live for up to a year, will simulate the planet's conditions as much as possible.

    The research city will also include a museum featuring famous space achievements to help educate and inspire children to undertake space exploration and discovery. To discover whether the construction method works on Mars, the museum's walls will be 3D printed using the sand from the nearby desert. Now, if they would only add some living quarters for the general public to experience life on Mars without leaving Earth, life would be perfect.

Dear God,

    Now that I am no longer young. I have friends whose mothers have passed away. I have heard these sons and daughters say they never fully thanked their mothers until it was too late to tell them.

    I am blessed with the dear mother who is still alive. I appreciate her devotion more each day. My mother does not change, but I do. As I grow older and wiser, I realize what an extraordinary person she is. It's sad that I am unable to say these words in her presence, but they flow easily from my pen.

    How does a daughter begin to thank her mother for life itself? For the love, patience and just plain hard work that go into raising a child? For running after a toddler（学步儿童）, for understanding a moody teenager, and for tolerating a college student who knows everything? For wailing for the day when the daughter realizes what her mother really is?

    How does a grown woman thank a mother for continuing to be a mother? For being ready with advice when asked or remaining silent when it is needed? For not saying “I told you so.” when she could have voiced these words dozens of times? For being essentially herself－loving, thoughtful, patient and forgiving?

    I don't know how to thank her, dear God, except to bless her and live up to the example she has set. I pray that I will look as good in the eyes of my children as my mother looks in mine.

    I got into the teaching profession purely by choice. I was then in 9th grade when my mathematics teacher asked me to take a class for a few students to whom the subject seemed difficult. And believe me, I enjoyed the entire teaching session. I never knew teaching would be so interesting. I loved my freshmen and was delighted to teach my so-called students who came up with lots of good questions.

    After my post-graduation, I worked as a software developer with a public sector(部门) in Bangalore for a few years. But I realized that no job could provide me with the satisfaction that I experienced while teaching and training. I always wanted to connect with a wider group of people. In fact, I felt it was a timely realization for me to choose the teaching profession. I applied to a few colleges, and finally I was chosen as a lecturer, and I had to lecture graduate and post-graduate students in a college.

On the first day, I was nervous thinking that I had to teach the senior classes. But now I can say that giving lectures was one of the best experiences of my life. I was a Computer Science and Information Technology lecturer, but I tried to help my students with subjects that were not within my domain(范围). It was a new feeling to me every morning before I went to the classes. I used to feel energized and excited thinking that the class would be lit up with bright faces to greet me, "Good morning, Madam."

    To me each day was a new beginning, with new feelings, new experiences and new queries(疑问). I loved to explore their young minds and read their inquisitive faces when a particular topic seemed tough. It was extremely challenging to motivate them to participate, think critically, question and also respect others' points of view. Though few things never seemed easy, it was extremely exciting to assure them that they really can. That is the reason I love to teach.

    Once a teacher was giving her young students a lesson on how the government works. She was trying to explain the principle of income tax(所得税).

    "You see," she began speaking slowly and carefully, "each person who works must pay part of his or her salary to the government. If you make a high salary, your taxes are high. If you don't make much money, your taxes are low."

    "Does it make sense?" she asked. "Does everyone understand the meaning of income tax?" The students nodded.

    "Are there any questions?" she asked. The students shook their heads.

    "Very good!" she said. "Now, I would like you to take a piece of paper and write a short composition on the subject of income tax."

    Little Joe was a slow learner. He had lots of problems with spelling and grammar, but at least this time he seemed to understand the task. He took his pen and after a few minutes, he handed the teacher the following composition: Once I had a dog. His name was Tax. I opened the door and in come Tax.

    A company has just launched(发起) what it calls "the world's first free standardized English test" recently. Anyone can take the test for free. The new exam is called the EFSET, which is short for Education First Standardized English Test. The company, Education First, is known by the letters EF.

    It is reported that there are two billion English language learners worldwide. Many of them are interested in attending an American college or university. To do so, foreign students need to take the Test of English as a Foreign Language—better known as TOEFL. However, many foreigners are not rich enough to take the TOEFL. In addition, test-takers often have to travel overnight to reach an official testing site. The World Bank says an average Cambodian worker earns only about $1,000 per year. The cost of taking the TOEFL is about 17.5 percent of the average worker's yearly wage.

    It is not just individuals who find the test pricey. Some governments also find it too expensive. What's more, not everyone needs official results from the TOEFL or IELTS—the International English Language Testing System. In the future, it's likely that the government may use the EFSET to test millions of employees and students.

    Experts believe that the EFSET meets the highest value in language testing. It uses special computer software that makes the questions easier or harder, depending on one's performance. The EFSET measures all the English learners' levels while the IELTS and TOEFL only measure learners' levels from intermediate(中等的) to advanced. The EFSET is unique in the sense that it gives free online access to anyone interested in measuring their English level.

    There is a 50-minute and a two-hour version of the test, which its developers are calling the EFSET Plus. Both versions test only reading and listening skills. It's hopeful that speaking and writing skills will be tested in the future. The IELTS and the TOEFL still use humans to rate the speaking and writing sections. It's a huge deal for students who are in areas where they can't get to the TOEFL or the IELTS. However, it is too early to know whether the EFSET results are acceptable for colleges and universities in America.