The color of animals is by no means a matter of chance; it depends on many considerations, but in the majority of cases tends to protect the animals from danger by making it less outstanding Perhaps, it may be said that if coloring is mainly protective, there ought to be fewer brightly colored animals. {#blank#}1{#/blank#}. The kingfisher itself, though so brightly colored, is not easy to see.

    {#blank#}2{#/blank#}. Thus, for instance, the lion, and the wild donkey are all sand—colored. “Indeed, in the desert, neither trees, brushwood, nor even undulation (起伏) of the surface afford the slightest protection to its enemies.{#blank#}3{#/blank#}.” says an expert.

    The next point is the color of the mature caterpillars(毛虫), some of which are brown. This probably makes the caterpillar even more outstanding among the green leaves. What would you do if you were a big caterpillar? Why, like most other defenceless creatures, you would feed by night, and lie hidden by day. {#blank#}4{#/blank#}. When the morning light comes, they go down the stem of the food plant, and hide among dry sticks and leaves around the ground, and it is obvious that under such circumstances the brown color really becomes a protection. While we may say as a general rule that the large caterpillars feed by night and hide by day, it is by no means always the case that they are brown: some of them still remain green.{#blank#}5{#/blank#}, and that the brown color is a later adaptation.

A. So do these caterpillars

B. Therefore, the color of the animals is bright

C. We can say that they formed a good habit

D. Desert animals are generally the color of the desert

E. We may conclude that the habit of hiding themselves by day comes first

F. However, there are some cases where vivid colors are themselves protective

G. So the color of birds, snakes and even smaller animals, is of one uniform sand color

    Do arithmetic problems 15 through 25. State the different forms of the verbs on page 50 of your French workbook. Read pages 12 through 20 of the Shakespeare play, and don't forget to fill in the missing chemical symbols on the worksheet.

    Sound like a list of your homework for the next few nights—or maybe even just for tonight? {#blank#}1{#/blank#} It's your teachers' way of evaluating how much you understand what's going on in class. And it helps strengthen important concepts.

    {#blank#}2{#/blank#} It's inviting to start with the easy things to get them out of the way. However, you'll have the most energy and focus when you begin, so it's best to use this mental power on the subjects that are most challenging. Later, when you're more tired, you can focus on the simpler things. If you get stuck on a problem, try to figure it out as well as you can—but don't spend too much time on it because this can mess up your homework schedule for the rest of the night. {#blank#}3{#/blank#} But don't pick someone whom you'll be up all night chatting with, or you'll never get it done!

    Most people's attention spans(一段时间) aren't very long, so take some breaks while doing your homework. Sitting for too long without relaxing will make you less productive than if you stop every so often. Taking a 15-minute break every hour is a good idea for most people. {#blank#}4{#/blank#}

    Once your homework is done, you can check over it if you have extra time. Be sure to put it safely away in your backpack—there's nothing worse than having a completed assignment that you can't find the next morning or that gets ruined by a careless brother or sister. {#blank#}5{#/blank#} Now you're free to hang out.

A. In conclusion, no one is expected to stay long, and people have very different learning styles.

B. But if you're really concentrating, wait until it's a good time to stop.

C. If you need to, ask an adult for help or call or email a classmate for advice.

D. Luckily, you can do a few things to do less homework.

E. When you start your homework, deal with the hardest tasks first.

F. And no teacher still believes that “chewed by the dog” line—even when it's true!

G. Homework is a major part of going to school.

    The eyes are the windows of the soul. Having a pair of bright, clear eyes is very important, so we should protect our eyes throughout our lives. {#blank#}1{#/blank#}

    Keep a distance from the TV set when you watch TV and give your eyes a rest every 30 minutes.

    {#blank#}2{#/blank#} Don't read while lying down or walking. Relax after every hour of reading.

    Don't stare at the sun or try to read in the darkness. {#blank#}3{#/blank#} This can damage your eyes easily.

    {#blank#}4{#/blank#} Not many people have this habit, but it is necessary. If you feel that there is something wrong with your eyes, get them checked quickly. Eye problem can be found and treated early with regular checks.

    Rest your eyes whenever you can. You can close your eyes for a few seconds or look into the distance for one or two minutes. A small break will relax your eyes and help to stop you from getting eye problems.

    Be careful when you choose your glasses.{#blank#}5{#/blank#} Make sure your glasses are right for you. If they don't feel right, get your glasses changed.

A. Get your eyes checked often.

B. Develop good reading habits.

C. Make sure you get enough sleep every night.

D. Even if you're wearing sunglasses, never look directly at the sun.

E. The following tips may help you to protect your eyes.

F. Drink green tea every day as a way to protect your eyes against eye problems.

G. Glasses that aren't suitable for you could bring you trouble.

    Have you promised that you are going to get healthier? Maybe you want to lose weight, get stronger and have more energy. Maybe you are under the doctor's orders to eat right and take exercise more. {#blank#}1{#/blank#} But with so many choices, it can be hard to get started. So here are healthy tips that you can follow.

    Eat right. Healthy eating is harder than before. Now many supermarkets or restaurants are packed with unhealthy choices that cause weight gain and weaken energy. Over time, making poor food choices can cause illness. {#blank#}2{#/blank#} Eat natural and organic foods as often as possible. Cut out the junk food.

    Keep healthy. {#blank#}3{#/blank#} So take exercise at once. Once you get started, you will be more likely to stick to it. Reduce stress. In the US, 77% of people often experience physical stress. {#blank#}4{#/blank#} You can manage stress by taking exercise, getting enough rest and cleaning bad relationships from your life.

    {#blank#}5{#/blank#} Sure, some people are naturally happier than others. But there are things you can consciously do to be happier. And guess what they are all free. So if you want to be happier, there are a few things to do, for example, express thanks, help others, or how to meditate.

A. Sleep well.

B. Choose happiness.

C. Well, those all sound great.

D. But you don't have to be concerned about it.

E. That is not a group you want to be a part of.

F. So tell someone you love how you feel about them.

G. People who often take exercise are generally happier and healthier than people who don't.

Learn to Manage Your Time in College

    A common view both among and of college students is that they are always short on money. While this may be true, many college students are also always running short on something else: time. {#blank#}1{#/blank#} Here are a few things to consider:

    Manage your academic time.{#blank#}2{#/blank#}Consequently, your academic work should always come first when it comes to arranging your time in order of importance. When looking at your schedule for the week, figure out what your academic commitments look like. What time do you have classes? How much homework do you have to do? What assignments are due? When do you have major exams or quizzes?

    Manage your personal time. It's an unrealistic expectation to think that you can study, go to class, and work all day, every day.{#blank#}3{#/blank#}Make sure to allow yourself time to go to something fun in the yard, attend a meeting for your favorite club, and just hang out for an hour or so at night with friends over dinner. Doing things that make your personal time more enjoyable and not totally focused on school? can actually improve your productivity when working on projects later.

    Keep your health in mind. When people's schedules are tight, one of the first things to go is sleep. While it may be common among college students, a lack of sleep is more hurtful than you might think. It can throw everything into disorder: your mental health, your physical health, your stress level, and, of course, your schedule. {#blank#}4{#/blank#}

    Use your technology. Nothing helps a college student stay organized more than a good calendar! Some students use the calendars on their phones; others use things like Google Calendar; others still use the classic paper-calendar model.{#blank#}5{#/blank#}Just change and try again.

A. Try your best to keep a routine on a regular basis.

B. Remember that your brain needs to have a break, too.

C. If what you're using isn't working for you, don't give up.

D. How can you balance your time when there never seems to be enough of it?

E. It's important to remember why you're in college in the first place: to graduate.

F. Making a list and then crossing items off as they are completed can be satisfying.

G. Take moments to plan out the time for a week: your homework, social time and sleep.

    The first Thursday in May is World Password Day, but don't buy a cake or send cards. Computer chip maker Intel created the event as an annual reminder. {#blank#}1{#/blank#}.

    The purpose of a password is to limit access to information. Having a very common or simple one like "abcdef" or even normal words like "password", is barely any security at all. {#blank#}2{#/blank#}. Hackers' password cracking tools take advantage of this lack of creativity and get in our accounts easily. More experienced users would choose a less common password. However, they might still fall victim to cracking software.

    {#blank#}3{#/blank#}? A secure password is all that stands between us and a cybercriminal. It should be unique and complex which a hacker can't easily guess or crack. The best passwords are supposed to be at least 15 characters long and full of random numbers and letters. However, a long password means a complicated process to log into a website. {#blank#}4{#/blank#}. You may want to write it down, but it is not suggested due to risk.

    Then what should we do? {#blank#}5{#/blank#}. You can choose a phrase such as "I want to go to England." Next, convert it to an abbreviation (缩略语) by using the first letters of each word and changing the word "to" to "2". Then you get following password phrase: iw2g2e. You can make it even more complex by adding punctuation, spaces or symbols: %iw_2g2e!@. It is much easier to remember and safer.

    Can't wait to try? Let's say goodbye to "666666" and change your password right now.