Most kinds of rose plants come from Asia. But roses are also native to other areas including northwest Africa, Europe and the United States. Some people say roses are difficult to grow. But you have a good chance of success if you start with a few suggestions from experts.

    You should plant your roses where they can get sunshine for about six hours on bright days. You can buy roses from a garden center or by mail order. You can buy potted（盆栽）roses, also known as container roses, or bare-root（裸根）plants. Each kind has its fans.

    Some gardeners say potted roses are easier to plant. They say the roots develop better. But Jeffrey Dinslage, president of Nature Hills Nursery in Omaha, Nebraska, points out that bare-root roses come without soil. So they weigh less to transport. If they arrive before you are ready to plant them, make sure the packing material is slightly wet. Keep the plants in a cool, dark place. You plant the roses while they are not active. The resting plants have no leaves but still need water.

    When growing roses, the soil should be wet. Watering should be done in the morning. That can prevent problem called black spots. But do not water too much. Jeffrey Dinslage says people often ask him about becoming discolored on rose leaves. He says the problems are usually caused by too much water. After heavy rains or too much watering, he advises pulling away mulch（覆盖物） from around the roots for a short time. This will help dry the soil. If your soil is very dry, you can add compost(堆肥), which returns nutrients（营养）to the soil.

    If you want to know more information, please click www. Planting.com.

    "Have a nice day！" may be a pleasant gesture or a meaningless expression. When my friend Maxie says "Have a nice day" with a smile, I know she sincerely cares about what happens to me. I feel loved and safe since another person cares about me and wishes me well.

    "Have a nice day. Next！" This version of the expression is spoken by a salesgirl at the supermarket who is rushing me and my groceries out the door. The words come out in the same tone (腔调) with a fixed procedure. They are spoken at me, not to me. Obviously, the concern for my day and everyone else's is the management's attempt to increase business.

    The expression is one of those behaviors that help people get along with each other. Sometimes it indicates the end of a meeting. As soon as you hear it, you know the meeting is at an end. Sometimes the expression saves us when we don't know what to say. "Oh, you just had a tooth out? I'm terribly sorry, but have a nice day. "

    The expression can be pleasant. If a stranger says "Have a nice day" to you, you may find it heart­warming because someone you don't know has tried to be nice to you.

    Although the use of the expression is an insincere, meaningless social custom at times, there is nothing wrong with the sentence except that it is a little uninteresting. The salesgirl, the waitress, the teacher, and all the countless others who speak it without thinking may not really care about my day. But in a strange and comfortable way, it's nice to know they care enough to pretend they care when they really don't care all that much. While the expression may not often be sincere, it is always spoken. The point is that people say it all the time when they like.

    ①What is a place where you could find old pictures of camels carrying people to Mecca, Saudi Arabia (沙特阿拉伯麦加),and also books about ancient Aztecs(阿芝 特克人) in Mexico ? It is all found in the World Digital Library (WDL). Its collection is available on the Internet.

    ②The librarian of the United States Congress, James Billington, established the WDL in 2009. And John Van Oudenaren is the director. They want it to include items that are both interesting and important, which encourages them to look for things from each country, each culture and each civilization. There are 170 partners in 79 countries sending material to it, including national or university libraries, museums and other cultural organizations.

    ③The library has 8,000 items, including whole books, ancient writings, music and photographs. Every item is annotated (注解)in the 6 official languages of the United Nations: English, Arabic, French, Spanish, Chinese, Russian plus Portuguese (葡萄牙语).

    ④Anyone may search the World Digital Library by subject, time period, kind of document or area of the world, whose website is www.wdl.org. Since 2009, 25 million people have visited the website from 250 places. The greatest number is from Spanish-speaking countries. The users include schools, researchers and anyone interested. A teacher from New York City said happily, “It is really wonderful to have a site where every kid in the class, no matter which country he/she is from or where his/her parents were from could search and find something about that country.”

    ⑤Mussa Maravl is a researcher for the WDL from Sudan, who works with all the materials that are in Arabic. He recently published rare photographs of Mecca from 1885. “These camels are, you know, lying their heads on the ground, which is very unusual for a camel. It means these camels have traveled so long, so far and half of those are very thin, too, meaning they have exhausted all the fat they have stored.”

    ⑥Mussa Maravl believes the library provides tools for understanding, especially among Arabs, Muslims and the United States. He says the WDL is posting many items about important developments in Arabic and Islamic science.

    We bet that on cold winter days, many of you love to stay in your warm home and, every now and then, come out into the kitchen for a snack. Unfortunately, plenty of small insects like to do the same thing! Winter is the time when small insects enter your house without an invitation. The season can be difficult for such creatures. In winter the air is cold, the ground is hard and many trees have no leaves. So small insects do what they have to do to survive.

    Monarch butterflies head south to warmer climates. Ants crowd in deep underground colonies and eat food they have been storing all year. Many insects go into a deep sleep called diapauses. There're different kinds of diapauses, but all are similar to hibernation, a time when bigger animals become inactive in the cold. Insects go into an inactive period, too, but it often isn't when the temperature drops.

    They rely on more dependable signals in the environment. For example, many insects can tell how much sunlight there's each day. They use that to tell themselves when to shut down. Insects are cold-blooded, meaning that their inside temperature is the same as the outside. They can't move much when it gets below 40 degrees Fahrenheit. So they search for any warm place.

    They're looking for protection. These guys have been doing this for 300 million years, so they don't really know they're coming into your house. The home is a recent event in terms of their evolutionary (进化的) behavior. They enter through tiny cracks or come in unnoticed on your clothes or shoes. Remember that they may be entering your homes for warmth and food, but they don't care about humans.

    You're growing up. That means you're probably experiencing lots of changes, all at once. Your body is changing. It might even seem as if your entire self is changing. It can be confusing and even scary. {#blank#}1{#/blank#} And it's good!

    Growing up means that you can do more, learn more, and start to make your mark on the world. In order for that to happen, your body produces chemicals called hormones that help both body and mind grow. Hormone levels change constantly, rising and falling.{#blank#}2{#/blank#} But it's partly to blame for intense emotions, surprising reactions, and mood swings.

    Because of the way your brain develops, it is somewhat ruled by emotion now and through your teen years. As a result, growing up can seem like an emotional roller coaster!{#blank#}3{#/blank#}

    Take care of yourself. If you eat right, sleep enough, and get good exercise, your brain will be much more able to deal with the stress.

    {#blank#}4{#/blank#} When you feel your moods swinging or you're upset, or confused, some quiet time will allow you to gather your thoughts and get calmer.

    Practice relaxing your body and deep breathing when you wake up and when you go to bed. {#blank#}5{#/blank#}Plus, when stuff happens during the day, you'll be able to calm yourself quickly with a deep breath or two before you react. Your body is changing.

A. Take a time-out.

B. But the truth is, it happens to every teen.

C. Work out regularly to keep physically fit.

D. This changing is needed for your body's development.

E. It will help you fall asleep-and start the morning right.

F. Here are a few things you can do to make the ride smoother.

G. Usually, these feelings settle down when you realize what is going on.

    The world maps will soon be altered to reflect an eighth continent! Dubbed "Zealandia" the landmass that lies east of Australia covers 4.9 million km. Over 94 percent of it is submerged (淹没的) in the southwest Pacific Ocean, with just the islands of New Zealand and New C aledonia visible above sea level.

    To be clear, the underwater land is not a recent find. Researchers have known about its existence since 1995 when Bruce Luyendyk discovered and proposed an eighth continent that he called Zealandia. At the time, the area was dismissed as a collection of islands and land fragments (碎片), or at the most, classified as a micro continent—a landmass of continental crust that is not geologically connected to the nearest continent, in this case, Australia.

    However, after observing the areas features on an underwater topography map, New Zealand geologist Nick became convinced that Zealandia is a continent. Mortimer says that while Zealandia is much smaller than our seven continents, at over half the size of Australia, it is unfair to classify it as a microcontinent. The geologist argues, “If you could pull the plug on the world's oceans, then Zealandia would probably long ago have been recognized as a continent.”

    Geologist Christopher Scotese argues that too much of the landmass is underwater, asserting it's "almost a continent the way Pluto is almost a planet." Richard Ernst, a geologist, proposes coining a new term minicontinent—for Zealandia. He thinks this is perfect given that it is too large to be called a microcontinent and too small to be classified as a full-sized continent. Given that there is no international panel to decide the fate of Zealandia, its future as a continent is uncertain. Mortimer hopes that if supporters start using the term Zealandia, it may eventually catch on. Whether that happens remains to be seen, but for now, we will have to be satisfied with just seven continents!