On a hot summer day, there are few things that are more wonderful than a nice cool pool.

    {#blank#}1{#/blank#}And it is completely relaxing. Of course, if you have children, there are certain measures you should take to keep them safe, whether you have a pool in your backyard or you are going to a public pool.

    People should never swim by themselves. Actually it only takes a second for people to become injured and drown(溺水). {#blank#}2{#/blank#}This is especially true for young children.

    Splashing(玩水) is fun, but don't take it too far. {#blank#}3{#/blank#}Kids love to go after one another through the water and to splash and jump around. But it is important to teach children not to jump on top of one another and to watch their surroundings in the water, so that they do not accidentally knock into others.

    If you have a pool, you must have a locking gate around your pool. {#blank#}4{#/blank#}Keep the gate knocked at all times, even when you are in the pool.

    Know the way out. {#blank#}5{#/blank#} Make sure that they know where all ladders are and how to enter and get out of the pool properly. Although your children may be able to lift themselves out of the pool using the side, that is not the safest way to go.

A.Kids should be taken good care of when they are swimming in the pool.

B.This is to prevent children from entering your pool without your knowledge.

C.And having someone there with you can make the difference between life and death.

D. Be sure to show all children the proper way to get out of the pool.

E.Even so, attempt to avoid getting any pool water into your mouth.

F. Jumping into the water seems like the perfect way to deal with the heat.

G. .Playing around in the pool can be a lot of fun.

    "No man is an island" is a well-known line from John Donne's Devotions upon Emergent Occasions, written more than three hundred years ago. Even now people still agree with him.

    {#blank#}1{#/blank#} So we all need to have friends. For some of us, though making friends is not difficult, we may not want to make the first move. It is also difficult at times to keep the friends we already have.

    There are many books about friendship, but Dale Carnegie's How to Win Friends and Influence People, written in 1936, is the most famous.{#blank#}2{#/blank#} It was later put into 28 languages.

    Here is the list of advice from his book:

    Be friendly and polite.

    Always greet with a smile. Begin with "excuse me" or "would you please", when you want to ask somebody.{#blank#}3{#/blank#}

    Go out of your way to be nice.

    {#blank#}4{#/blank#} Making some soup for a sick neighbor may seem like a little thing to you, but it will make your neighbor feel a lot better.

    Remember names.

    They say that the sweetest music to a person' ears is the sound of his or her own name.

    {#blank#}5{#/blank#}

    Try to understand other people's ways and ideas and learn something from them.

A. Be open-minded.

B. Try to help your friends get out of trouble.

C. Without other people, life became empty and sad.

D. Find some time to do some things for other people.

E. It's also important to keep close friends in our daily life.

F. Remember to say "thank you" and try to be as helpful as you can.

G. This "How to" book about getting along with other people became a best seller.

    Lots of people find it hard to get up in the morning, and put the blame on the alarm clock. In fact, the key to easy morning wake-up lies in resting your body clock. {#blank#}1{#/blank#} Here's how to make one.

    {#blank#}2{#/blank#} In order to make a change, you need to decide why it's important. Do you want to get up in time to have breakfast with your family, get in some exercise, or just be better prepared for your day? Once you are clear about your reasons, tell your family or roommates about the change you want to make.

    Rethink mornings. Now that you know why you want to wake up, consider re-arranging your morning activities. If you want time to have breakfast with your family, save some time the night before by setting out clothes, shoes, and bags. {#blank#}3{#/blank#}That's a quarter-hour more you could be sleeping if you bought a coffee maker with a timer.

    Keep your sleep/wake schedule on weekends. If you're tired out by Friday night, sleeping in on Saturday could sound wonderful. But compensating on the weekends actually feeds into your sleepiness the following week, a recent study found.{#blank#}4{#/blank#}

    Keep a record and evaluate it weekly. Keep track of your efforts and write down how you feel. After you've tried a new method for a week, take a look at your record. {#blank#}5{#/blank#}If not, take another look at other methods you could try.

A. Get a sleep specialist.

B. Find the right motivation.

C. A better plan for sleep can help.

D. And consider setting a second alarm.

E. If the steps you take are working, keep it up.

F. Stick to your set bedtime and wake-up time, no matter the day.

G. Reconsider the 15 minutes you spend in line at the cafe to get coffee.

    Whoever wrote the song “it's the Most Wonderful Time of the Year” must have never experienced Holiday blues. Fortunately, psychological research suggests some effective ways you can beat the holiday blues. The key point is that sadness and other tough emotions are not what we should try to avoid. {#blank#}1{#/blank#}. Here are four strategies to help you make your own happiness recipe this holiday season.

    Don't force cheer

    At family gatherings with cousins you secretly can't stand, you tend to put on a happy face. Indeed, that might even seem like the most mature response—no drama, no conflict. But a 2011 study followed dozens of bus drivers, looking to see when they gave forced or honest smiles at their passengers. The results showed when the drivers pretended to have a good mood, their actual moods got worse. {#blank#}2{#/blank#}.

    Let off sadness

    The results of the bus-driver study can be explained by researchers, who find that negative feelings like sadness or anger only increase when we try to control them. {#blank#}3{#/blank#}. We don't like contradictory behavior.

    Respond cautiously

    Recently, scientists have been paying special attention to the benefits of caution. When you respond cautiously to an emotional trigger (e.g. overcooking the holiday turkey), you pause rather than reacting at once. {#blank#}4{#/blank#}. Besides, it is associated with less anxiety, and may even carry physiological benefits.

    {#blank#}5{#/blank#}.

    Of course, the holidays will bring a mix of highs and lows, but the most important lesson to keep in mind is that this variety of emotions might be the best thing possible for your overall well-being. In other words, sadness, anger, and other difficult emotions are nothing to fear. Just make sure you're balancing them with lighter experiences. And don't forget to give yourself a break.

A. Relax your mind

B. Enjoy a mix of emotions

C. We tend to deny the important function emotions serve

D. Instead, they can help contribute to a healthy and happy life

E. So trying to force happiness seems to have the opposite effects

F. A cautious response to a negative event reduces sadness we experience

G. We feel bad when our appearance contradicts how we truly feel inside

    Imagine an area 34 times the size of Manhattan. Now imagine it covered ankle-deep in plastic waste—a total of about 19 billion pounds of garbage. {#blank#}1{#/blank#}.

    "We're being overwhelmed(淹没) by our waste," said Jenna Jambeck, an environmental engineer who led the 2015 study that determined this astonishing number. {#blank#}2{#/blank#}, unless something is done to stop the tide of garbage.

    Plastic—a widely-used material—has in many ways been a benefit to humans but it has also caused a growing problem. Today, plastics are the No.1 type of garbage found in the sea. Ocean Conservancy, a nonprofit that organizes an annual coastal cleanup event worldwide, said plastic waste makes up around 85 percent of the garbage collected from beaches and oceans.

    Ocean Conservancy says plastics are believed to threaten(威胁)at least 600 different wildlife species(物种). {#blank#}3{#/blank#}; a growing body of evidence suggests humans are consuming plastics through the seafood we eat. A research suggests some plastics could be poisonous to humans, and could potentially increase the risk of health problems.

    {#blank#}4{#/blank#}. At the Economist World Ocean Summit this week, ten nations announced to reduce plastic sea liter as part of UN Environment's CleanSeas campaign. {#blank#}5{#/blank#}Corporations also have a role, as do individuals. We can start by thinking twice before using single-use plastic products—and when we do use them, we should take care to properly throw them off or recycle.

A. The following is what we should do

B. And it's not just wildlife that's threatened

C. And this figure is likely to double by 2025

D. But it's not just countries that need to do their part

E. By 2050, that figure is expected to rise to 1000 pieces

F. That's how much plastic waste ends up in our oceans every year

G. All of us have an important role to play in dealing with the problems

    Rivers play an important role on the earth, and we can't imagine what the earth would be like without rivers. {#blank#}1{#/blank#}

    With a length of 6, 650 kilometers, the Nile is the longest river in the world. The Nile River has been the source of human civilization since ancient times. The Nile has two main branches—the White Nile and the Blue Nile. The White Nile starts from the Great Lakes region of East and Central Africa through Lake Victoria. {#blank#}2{#/blank#} The Blue Nile carries with it a lot of fertile soil which turns out to be very important to farming in Egypt.

    The Amazon River is the world's largest river with a width of about 40 kilometers during the rainy seasons but about 10 kilometers wide when it is not flooded. The Amazon River has such a big water volume that it accounts for(占.....比例) more than 20% of all the world's fresh water—far more than any other river. {#blank#}3{#/blank#}The main Amazon River flows mostly through Brazil and Peru but its tributaries can also be found in many other countries.

    {#blank#}4{#/blank#}It has a depth of about 250 meters. Its length is 4, 700 kilometers. The sources of the Congo River are in the highlands and mountains in the Eastern Africa Rift Valley. It's the second largest river in terms of water volume. {#blank#}5{#/blank#}The Congo River basin(盆地) is the catchments(流域，集水区) area of the Congo River. It lies in both north and south of the Equator, making its flow very stable as there are always some tributaries experiencing a rainy season at any time.

A. Some of them are worth mentioning.

B. The Congo River is the world's deepest river.

C. Do you know which is the deepest river in the world?

D. The Blue Nile originates from (发源于)Lake Tana in Ethiopia.

E. Without rivers, there would be no living life in and along them.

F. And it flows through the second largest rain-forests in the world.

G. Streams that begin in the Andes Mountains are its sources.