Travel Light

    Getting away for a short time always seems like a great idea—until you have to pack. {#blank#}1{#/blank#}The rule is: pack light. Here are some tips to help you pack.

    Make a list. Think of what you need from your head to your toes.{#blank#}2{#/blank#} When you've done this once, it'll be easier next time.

    2). Consider buying small-size samples of shampoo, toothpaste, and other items at your local drugstore. You can reuse the plastic containers next time you go away too.

    3). Choosing which clothes to bring is probably the hardest packing decision to make. Think once again from head to toe — hat, shirts, jeans, sneakers, etc. Once you've picked out what you want to bring, think carefully. Do you really need that extra pair of jeans? If so, fine.{#blank#}3{#/blank#} Don't try to fool yourself. You are the one who will be left holding the bag.

    4). Weather is an important factor in your packing. If it's cold, you could wear a jacket, a sweater, a regular shirt, and a T-shirt. Putting them on will keep you warm. {#blank#}4{#/blank#} Remember how much easier it will be to carry your bag! As for shoes, you may want to call ahead to see if dress shoes are necessary. If so, one pair will be enough, along with one pair of comfortable shoes. Remember that it is you who have been invited somewhere, not your things. {#blank#}5{#/blank#} So, do it right—pack light.

    Every time we get behind the wheel of a car, we put our lives and the lives of others at risk. Self-driving cars are designed to reduce those risks by letting technology control our vehicles.

    Accident rates for self-driving cars have been much lower than the rate, for human-driven cars. {#blank#}1{#/blank#}

    As humans, we can make moral choices in avoiding accidents. To avoid hitting a child, for example, human drivers might sharply turn a car away from the child even if others may be injured. {#blank#}2{#/blank#} Researchers studied this issue. They have developed the Moral Machine website to help explore the choices self-driving cars should make.

    {#blank#}3{#/blank#} You are shown two possible traffic situations and you choose between them. An accident will take place. You choose how many living beings would be hurt or killed.

    In one situation there may be a female doctor, a child, two dogs and a homeless person who would be killed. In the other situation, you might have two babies and a cat who would be killed. {#blank#}4{#/blank#}

    The Moral Machine website has many situations and many possible outcomes. When you click on the situation of your choice, it will be highlighted. {#blank#}5{#/blank#} At the end of the situation, you are shown the results, based on the choices you made. The results show which character you were most likely to save and which character you were most likely to have die.

How Teens Can Stay Fit

    Any type of regular, physical activity can improve your fitness and your health. Doing physical exercise is easy, but the difficult thing is that you keep moving! {#blank#}1{#/blank#}, like brushing your teeth, eating, and sleeping. It can be in gym class, joining a sports team, or working out on your own. Keep the following tips in mind:

    {#blank#}2{#/blank#}. A good mental attitude is important. Find an activity that you think is fun. You are more likely to keep with it if you choose something you like. A lot of people find it's more fun to exercise with someone else, so see if you can find a friend or family member to be active with you.

    Take it one step at a time. {#blank#}3{#/blank#}. For example, walk or ride your bike to school or to a friend's house instead of getting a ride. Get on or off the bus several blocks away and walk the rest of the way. Use the stairs instead of taking the elevator or escalator.

    Get your heart pumping(跳动). Whatever you choose, make sure it includes aerobic(有氧的) activity that makes you breathe harder and increases your heart rate. This is the best type of exercise because it increases your fitness level and makes your heart and lungs work better. {#blank#}4{#/blank#}. Examples of aerobic activities are basketball, running, or swimming.

    Don't forget to warm up with some easy exercises or stretching(拉伸) before you do any physical activity. {#blank#}5{#/blank#}. Stretching makes your muscles and joints more flexible too. It is also important to stretch out after you exercise to cool down your muscles.

A. It also burns off body fat

B. Stay positive and have fun

C. Physical exercise can help prevent diseases

D. Small changes can add up to better fitness

E. Exercise should be a regular part of your day

F. This warms your muscles up and may help protect against injury

G. Do the activity as often as possible, but don't exercise to the point of pain.

    March 22 is World Water Day. {#blank#}1{#/blank#} As we know, water is the most important natural resource on the Earth.

    Water covers more than 70% of the Earth's surface, but most of that is sea water.{#blank#}2{#/blank#} Fresh water takes up only 2.5% of the total water.

    People in many places arc facing serious water problems.{#blank#}3{#/blank#} Many kinds of waste from cars, factories' farms and homes make rivers, lakes, and oceans dirty. In the beginning, waste from cars and factories pollutes the air. Then, when it rains, the rain water comes down and makes our drinking water dirty.

    Scientists say that in 30 years, more than half of the people in the world won't have enough clean water.{#blank#}4{#/blank#} Here is some advice.

    Turn off the tap while you arc brushing your teeth. You can save as much as 450 litres (升) of water each month.

    Leaky (漏水的) taps waste a lot of water. Fix them right away!

    You can easily cut your shower time short, and you'll be still clean.

    {#blank#}5{#/blank#}

A. It reminds us to save water.

B. One of them is water pollution.

C. We have to learn how to save water.

D. People can't use it directly in daily life.

E. Water problems are quite serious today.

F. Many people in Africa don't have enough water.

G. When you wash the dishes, don't let the water run.

    Are supermarkets designed to persuade us to buy more? When you enter a supermarket, the manager knows better than you: how you will behave — which way you will walk, where you will look, what will make you buy one product rather than another. When customers go into a shop, they naturally look to their left but move clockwise, towards the right. So supermarket entrances are usually on the left of the building. And the layout is designed to take shoppers around the store, aisle (通道) after aisle, from left to right. {#blank#}1{#/blank#}

    Fresh fruit and vegetables are displayed near supermarket entrances. {#blank#}2{#/blank#} Basic food like sugar and tea, are not put near each other. They are kept in different aisles so customers are taken past other attractive foods before they find what they want. In this way, shoppers are encouraged to buy products that they do not really want.

    People walk quickly through narrow aisles, but they move slowly in wide aisles and give more attention to the products. One best-selling position for products is at the end of aisles, because shoppers slow down to turn into the next aisle. {#blank#}3{#/blank#} Supermarkets are paid by food companies to put their products in each of these high-selling places.

    {#blank#}4{#/blank#} While parents are waiting to pay, children reach for the sweets and put them in the trolley.

    More is bought from a fifteen-foot display of one type of product (e.g. cereal, washing powder) than from a ten-foot one. {#blank#}5{#/blank#} They do not like to buy from shelves with few products on them because they feel there is something wrong with those products that are there.

A. Another is on shelves at eye level.

B. Sweets are often placed at children's eye level at the checkout.

C. There are always enough products prepared for customers in the supermarket.

D. Then shoppers will pay attention to all the products.

E. This gives the impression that only healthy food is sold in the shop.

F. Customers also buy more when shelves are full than when they are half empty.

G. Supermarkets are one of children's favorite places and they are also big consumers.

    When you see cockroaches (蟑螂) in your house, your first thought might be to use a bottle of insecticide (杀虫剂). However, not only would your family be affected by harmful chemicals, but also it might not do much good. So researchers say that besides using chemical treatments, you can also use other methods like traps. {#blank#}1{#/blank#}. So, how do you do it?

    As with most insects, prevention is more important. {#blank#}2{#/blank#}. That means never leaving dirty dishes in the kitchen and sweeping the floor before you go to bed.

{#blank#}3{#/blank#}, so it's necessary to seal (密封) the entries into your home. This may take time, but in the end, it's worth the effort, especially if you live in an apartment and have neighbors who don't reach the same standards of cleanliness as you do.

    Keep your space as cool as possible. {#blank#}4{#/blank#}. They increase their activity level and even spread their wings and fly. With more heat they have more strength.

    You can also try turning to a natural insect control company. My insect control company uses diatomaceous earth, a kind of special soil, in the walls of my home.{#blank#}5{#/blank#}, it's not harmful for you and your family. Best of all, it works well.

A. Cockroaches can't go very long without water

B. Cockroaches can move through even the smallest spaces

C. Or you can give up chemicals and try just natural methods

D. When temperatures rise, many of these insects become active

E. Because the earth can cause an insect to die without the use of chemicals

F. You have cockroaches in the house, but you don't want to use insecticide

G. Make sure your house is clean, because food remains are attractive to cockroaches