Experiments under way in several labs aim to create beneficial types of genetically modified foods, including starchier potatoes and caffeine-free coffee beans. Genetic engineers are even trying to transfer genes from a cold-winter fish to make a frost-resistant tomato.

    A low-sugar GM strawberry now in the works might one day allow people with health problems such as diabetes (糖尿病) to enjoy the little delicious red fruits again. GM beans and grains rich in protein(蛋白质) might help people at risk of developing kwashiorkor. Kwashiorkor, a disease caused by severe lack of protein, is common in parts of the world where there are severe food shortages.

    Commenting on GM foods, Jonathon Jones, a British researcher, said: "The future benefits will be enormous（巨大的）, and the best is yet to come". To some people, GM foods are no different from unmodified foods. "A tomato is a tomato," said Brian Sansoni, an American food manufacturer.

    Critics of GM foods challenge Sansoni's opinion. They worry about the harm that GM crops might do to people, other animals, and plants.

    In a recent lab study conducted at Cornell University, scientists tested pollen(花粉) made by BT corn, which makes up one-fourth of the U.S. corn crop. The scientist dropped the pollen onto milkweed, a plant that is the only known food source of a butterfly caterpillar(毛虫). Within four days of feeding on the leaves, almost half of a test group of caterpillars died. "This is a warning bell." said Cornell researcher Linda Raynor.

    Some insects that are not killed by GM foods might find themselves made stronger. How so? The insecticides are used on the crops to kill the pests. But GM plants produce a continuous level of insecticide. Insects relying on those crops may develop resistance to the plants and they may also develop a resistance to the insecticide.

    At the forum on GM food held last year in Canada. GM crops that have been made resistant to the herbicide might crossbreed with wild plants, creating "superweeds" that could take over whole fields.

    So where do you stand? Should GM food be banned in the United States, as they are in parts of Europe? Or do their benefits outweigh（胜过） any of the risks they might carry?

    Low-Cost Gifts for Mother's Day Gift

    Gift No. I

    Offer to be your mother's health friend. Promise to be there for any and all doctor's visits whether a disease or a regular medical check-up. Most mothers always say “no need,” another set of eyes and ears is always a good idea at a doctor's visit. The best part ? This one is free.

    Gift No. 2

    Help your mother organize all of her medical records, which include the test results and medical information. Put them all in one place. Be sure to make a list of all of her medicines and what times she takes them. “Having all this information in one place could end up saving your mother's life,” Dr. Marie Savard said.

    Gift No. 3

    Enough sleep is connected to general health conditions. “Buy your mother cotton sheets and comfortable pillows to encourage better sleep,” Savard said. “We know that good sleep is very important to our health.”

    Gift No. 4

Some gift companies such as Presents for Purpose allow you to pay it forward this Mother's Day by picking gifts in which 10 percent of the price you pay goes to a charity (慈善机构). Gift givers can choose from a wide variety of useful but inexpensive things —- many of which are “green” —- and then choose a meaningful charity from a list. When your mother gets the gift, she will be told that she has helped the chosen charity.

    The Taj Mahal(泰姬陵) is a love story, a sad and beautiful one. If it didn't exist, we would easily imagine that the story of its construction was simply a fairy tale.

    Three hundred years ago, there lived an Indian emperor called Shah Jahan. His wife was a beautiful and bright woman whom he loved greatly. Her title was Mumtaz Mahal: its shortened form Taj Mahal, means “pride of the palace”. In the year 1630 this beloved wife of the emperor died. He was so broken-hearted that he thought of giving up his throne(王位). He decided out of his love for his wife to build her the most beautiful tomb(墓穴) that had ever been seen.

    He invited the best artists and architects from India, Turkey, Persia and Arabia and finally, the design was completed. It took more than twenty thousand men working over a period of 18 years to build the Taj Mahal, one of the most beautiful buildings in the world.

    The building itself stands on a marble platform, 29 meters' square and 6-7 meters' high. Towers rise from each of the four corners. The Taj itself soars another 61 meters into the air. It is an eight-sided building made of white marble.

    The emperor planned to build an identical tomb of black marble for himself on the other side of the river connected by a silver bridge. However, his son put him into prison in the palace before he could finish, and for the rest of his life, he could only gaze across river at the tomb of his beloved wife.

    When we have troubles we turn to our family. But what would we do if we lost our family? I want to share with you a touching film about an Indian child who loses his loved ones.

    The main character in the 2016 Australian film Lion is a child named Saroo. When he is 6 years old, he follows his brother Guddu to a job, but gets lost. Saroo ends up in a new city and is adopted by a kind Australian family.

    However, one day Saroo is reminded of his original family. He knows immediately that he must find out as much about them as he can, so he racks his brains (绞尽脑汁)for all that he can remember.

    Lion is the most moving film that I have ever seen. When I saw the young Saroo trying to help his brother while they worked on a construction site at such a young age, I was amazed.

    In today's society，the poor are always looked down upon. But I saw in the eyes of young Saroo great courage and kindness that made me think differently. He has great qualities that help him survive in the strange city where he finds himself.

    When Saroo sees that people are kind he rewards them with the sweetest smiles and loves them with all of his heart. Saroo's goodness, I believe, allows him to live a happy life with his Australian foster (收养)family.

    It is unbelievably hard for Saroo to reunite with his original family. He can't even remember the name of his hometown. It takes him days to find the real one. In fact, he has to go through every alternative (供选择的东西)he can find on Google Maps.

I'm deeply impressed by Saroo's determination. It is why, when I saw the movie, I cried at the moment when he finally found his mother.

    Lion is full of moving and impressive details. There are so many that I can only mention a few of them here. But what stands out most to me is Saroo's commitment (投身)to finding his original family，and the fact that his search doesn't stop him from loving his foster family.

    I want to recommend this film to everyone. See it and you'll come to understand so much about family and love.

    Growing roses is quite a difficult task without knowing the right way. If you are attracted by the beauty of roses and need some tips for growing them, read on for some tips about taking care of rose plants.

    You have to buy a good plant, preferably around two years old.

    While most rose plants can tolerate around six hours of sunlight every day, some varieties need eight hours of sunlight exposure. The shade-loving roses need only four hours of sunlight every day.

    You will have to soak (浸泡) the roots overnight before planting. If you plant them in a container, then the watering should be done daily, whereas garden roses need water once or twice a week.

    The next point is the application of fertilizer (肥料),which is mainly needed by rose plants in containers. Most of the varieties do not need fertilizer, as they can feed on the nutrients that exist in the soil. There is no need of fertilization during November and December, and the frequency of fertilization can be reduced in summer, especially after April. It can be restarted in September and has to be increased during the growing periods.

    Cutting the stems promotes the growth of the plants and also aids flowering. It should be done regularly to remove dead or diseased leaves and stems.

    Rose plants can be successfully grown by beginners too! With some care and consideration, all your efforts would definitely be worth it once you smell the fragrance of beautiful roses.

    Stocky, slow-moving whale, rarely grows beyond 15 metres in length

    Flippers are a third of body length; variable dorsal fin size and shape; saw-toothed trailing edge on flukes, often raised when diving

    Bumpy tubercles on top of head

    Body colour is dark brown to black; often extensive white on flippers and underside of body and flukes; such patterns enable individual recognition

    Bushy blow, occasionally V-shaped

    270-400 olive baleen plates

    Humpback whales belong to the rorqual (groove-throated) family, which includes fin, sei, Bryde's, minke and blue whales. The big family migrate between winter tropical breeding areas (North West Shelf, Great Barrier Reef, New Caledonia, Vanuatu, Fiii, Tonga) and summer Antarctic feeding areas. Once common in New Zealand waters, humpbacks are now rarely seen and may migrate further offshore. Males compete for mates either by physical fight or by song. Females give birth to their young every two to three years; some non-breeding females probably remain in the southern waters during winter. Young humpback whales return to their area of birth but in later life some wander between breeding areas. Humpbacks eat small shrimps and other schooling prey, such as fish, forming small, cooperative groups of two to three individuals to feed.

    Similar species: Easily identifiable due to a 'hump' back when submerging, but at a distance may be confused with other species that raise their flukes when diving, such as sperm, right and blue whales.

    Protection status: Recovering well from past whaling and now numerous in some former migration and aggregation areas, rarely seen in others.