1 . The eyes are the windows of the soul (心灵). Having a pair of bright, clear eyes is very important, so we should protect our eyes throughout our lives.
Don’t read while lying down or walking. Relax after every hour of reading. Keep a distance from the TV set when you watch TV and give your eyes a rest every 30 minutes. Don’t stare at (盯看) the sun or try to read in the darkness.
Get your eyes checked often.
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.
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.
Besides, be careful when you choose your glasses.
| A．Develop good habits of using eyes. |
| B．It also helps to protect you from getting eye problems. |
| C．Make sure you get enough sleep every night. |
| D．Glasses that aren’t suitable for you could bring you trouble. |
| E．Even if you’re wearing sunglasses, never look directly at the sun. |
| F．Eye problem can be found and treated early with regular checks. |
| G．Drink green tea every day as a way to protect your eyes against eye problems. |
2 . Bad teeth may be painful and it’s getting worse without treatment. They can even ruin your life. Illness of the teeth can find its way into the blood system. This can increase the chances of a heart disease or other illnesses.
Experts say good care for teeth should start at birth. Mothers’ milk is the best food for the healthy development of teeth.
But dentists say a baby’s mouth and early teeth should be cleaned after each feeding. Use a cloth with a little warm water. Do the same if a baby is fed with a bottle. Experts say if you decide to put your baby to sleep with a bottle, give him only water.
When a baby’s teeth begin to appear, you can clean them with a wet toothbrush. Dentists say it is important to find soft toothbrushes made especially for babies and to use them very gently. Young children often eat toothpaste (牙膏) when they brush their teeth, so they should be carefully watched when they brush their teeth.
Parents often ask what effect thumb sucking (吮拇指) might have on their baby’s teeth. Experts generally agree that this is fine early in life. Most children stop sucking their thumbs by the age of four. If it continues, parents should talk to their children’s dentists or doctors.
Dentists say children should have their first dental visit by the time they are one year old. They say babies should be examined when their first teeth appear, usually at around six months.
1. People should pay attention to teeth problems because ________.| A．they will bring bad luck |
| B．they will bring the family much trouble |
| C．they usually last a long time |
| D．they can cause other illnesses |
| A．he begins to speak | B．he was born |
| C．he has his first tooth | D．he is fed with a bottle |
| A．children’s toothbrushes are always expensive |
| B．children are not advised to brush their teeth |
| C．drinking water is better for babies’ teeth than milk before sleeping |
| D．thumb sucking is common for kids |
3 . Eyesight plays an important part in our daily life. Every waking moment, the eyes are working to see the world around us. Over forty percent of Americans worry about losing eyesight, but it’s easy to include steps into our daily life to ensure healthy eyes. Here are some suggestions for a lifetime of healthy eyesight:
I. Schedule yearly exams.
II. Protect against UV rays(紫外线).
Long-term stay in the sun creates risk to your eyes. No matter what the season is, it’s extremely important to wear sunglasses.
III. Give your eyes a break.
Two-thirds of Americans spend up to seven hours a day using computers or other digital products.
IV. Eat your green.
As part of a healthy diet, eat more fruits and vegetables each day. Vitamins C and E help protect eyesight and promote eye health.
V. Practice safe wear and care of contact lenses (隐形眼镜).
Many Americans use contact lenses to improve their eyesight. While some follow the medical guidance for wearing lenses, many are breaking the rules and putting their eyesight at risk.
| A．Eye care should begin early in life |
| B．They can properly protect your eyes |
| C．Stay in good shape by taking more vitamins |
| D．Parents usually don’t care about their own eyesight |
| E．Always follow the doctor’s advice for appropriate wear |
| F．This frequent eye activity increases the risk for eye tiredness |
4 . You carry 1.3 kg fatty substances in your head that controls everything you will ever do. This fantastic control center lets you think, learn, create, and feel emotions. It also controls everything your body does. What is this amazing machine? It’s your brain — a structure so amazing that the famous scientist James Watson called it “the most complex thing we have yet discovered in our universe”.
Imagine your cat jumps onto the kitchen counter, and is about to step onto a hot stove. You would have only few seconds to act. In situations like this, your brain reads the signals from your eyes and quickly calculates when, where and at what speed you need to run to save her. Then it tells your muscles to move. No computer can match your brain’s great ability to download, process, and react to the flood of information from your eyes, ears and other sensory organs.
If a bee lands on your foot, sensory neurons (感觉神经元) in your skin send this information to your brain at a speed of more than 240 kilometers per hour. Your brain then uses motor neurons (运动神经元) to send a message back to your foot: Shake the bee off quickly! Motor neurons can send this information at more than 320 kilometers per hour!
Your brain has about 100 billion tiny cells: neurons — it would take you more than 3,000 years if you tried to count them all. Whenever you dream, laugh, think, see or move, tiny chemical and electrical signals are racing between these neurons along billions of tiny neuron pathways. Believe it or not, the activity in your brain never stops. Countless messages fly around inside it every second, like a super-fast game of table tennis. Your neurons create and send more messages than all the phones in the entire world. And although a single neuron produces only a tiny amount of electricity, all your neurons together can produce enough electricity to power a light bulb.
1. What does “the most complex thing” mean?| A．A supercomputer. | B．The universe. |
| C．Human brains. | D．Our emotions. |
| A．Brains can download more information than any computer. |
| B．The cat plays an important role in testing human brainpower. |
| C．Motor neurons in human brains serve to send countless messages. |
| D．Your brains can use neurons to send messages back faster than bees’. |
| A．neurons can send lots of messages |
| B．how many active tiny cells the brain have |
| C．how much electricity the brain can produce |
| D．there is countless information in the brain |
| A．The powerful brain is a wonderful machine. |
| B．Brains work well in controlling body movements. |
| C．The brain is the most complex structure in the universe. |
| D．Human brains are made up of numerous neurons. |
5 . Crossing your legs is an extremely common habit. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.
A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason this happens is because the blood in your legs has to work against gravity to be pumped back to your heart, crossing one leg over the other increases resistance, making it even harder for the blood to circulate. You won’t feel any immediate effects, but sitting for long periods of time will hurt you forever.
Crossing your legs can also lead to neck and back pain. Ideally, it’s best for our bodies to sit with our feet planted flat, hip width apart, on the floor, but it’s not easy to maintain perfect posture all day at the office. When you sit with your legs crossed your hips are in a twisted position, which can cause one of your pelvic bones(骨盆) to rotate. Since your pelvic bone supports your neck and spine（脊椎）, this can cause pressure on your lower and middle back and neck.
You also might notice that when you sit with your legs crossed for long periods of time your feet and legs get painful or have the feeling of being asleep. This is because when one leg sits on top of the other it causes pressure on the veins（静脉） and nerves in your legs and feet. It can cause numbness and/or temporary paralysis in the legs, ankles, or feet. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.
So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.
1. Which of the following is not the consequence of crossing legs?| A．Neck and back get hurt. |
| B．Feet and legs become numb. |
| C．Blood pressure goes up. |
| D．Pelvic bones keep perfect postures. |
| A．break seriously |
| B．hurt greatly |
| C．move casually |
| D．straighten suddenly |
| A．How to choose a proper sitting posture |
| B．It is advisable not to sit with legs crossed |
| C．How to develop beneficial habits |
| D．Blood pressure harms our bodies. |
