Tone of voice is very important in human conversation. A person might use words that communicate one message and a tone that shows something very different. This possibility for confusion is one reason that businessmen encourage discussing things in person, rather than through email, as tone cannot be determined in the written form.

    The same rule is true with children. Children as young as a few months respond to a change in voice. It has been recorded that babies prefer to hear a story read by their own mother rather than another woman whom they do not know.

    Have you ever talked to someone who had little or no changes in their voice no matter what you were discussing? Think of the teacher or professor you had in the past that spoke in a monotone manner for the entirelecture. It is very boring and difficult to become interested in the topic.

    Parents should make an active effort to communicate with your child. If your child figures out how to open a box he or she has been struggling with and says “YES!” with pride in his or her voice, your response should be happy and excited (something encouraging, like “You did it!”). If you plainly said the same thing, you would not be matching the tone of your child.

    This applies to feelings that the child may express in everyday situations as well. If a child argues with a friend, your response should not be said in a high voice or with a smile. Seriously and sincerely you should say “You look sad” or “That must have been hard for you”.

    The tone of your voice expresses understanding, acknowledgement, connection and several other healthy things to your child. Although your words are very important, equally important is the tone with which you say those words.

    Macao is only forty miles from Hong Kong and it is easy to reach. You can get there by sea. It is an interesting place and it has a long history. Macao is part of China and most people living there are Chinese.

    The first Europeans in Macao came from Portugal. More than four hundred years ago the Portuguese went there to trade with China. Some settled and made their homes there. They built strong forts（要塞）to guard the city and the harbor. They also built churches, schools, hospitals and other places. Slowly the city grew. People from many other countries came to live and work in Macao.

    Today many people live in Macao. Some only go there to watch dog-racing or motor-racing or to gamble（赌博）with their money. But Macao is a quiet and peaceful place. It is pleasant just to walk around and look at the old buildings and forts. You feel you are back in the old days. Of course，some of the buildings are now in ruins. The Church of St. Paul has only the front wall with many steps leading up to it. But it is still interesting to see.

    When you are hot and tired, there are small cool gardens to rest in. When you are hungry, there are good restaurants with many kinds of food. Nearby are some islands, which are also nice to visit and are easy to get in. There are certainly a lot to see and to do in Macao.

    Your school asked parents about the social development in children in the last Parents' Meeting. Here are some opinions. Read following information and answer the questions.

    Mountaineers have noted that as they climb, for example, up to the 12,633­foot Humphreys Peak in Arizona, plant life changes greatly. In the Sonoran Desert, one climbs into a pine forest at 7,000 feet and a treeless tundra(冻土带) on the top of the mountain. It may seem that plants at a given altitude are associated in what can be called “communities” －groupings of species. The idea is that over time, plants that require particular climate and soil conditions come to live in the same places, and are frequently to be found together. Scientists study the history of plant life and build up a picture of how groups of plants have responded to climate changes and how ecosystems develop. But are these associations, which are real in the present, permanent?

    A great natural experiment took place on this planet between 25,000 and 10,000 years ago, when small changes in the earth's orbit caused great sheets of ice to spread from poles. These glaciers(冰川) covered much of North America and Europe to depths of up to two miles, and then, as the climate warmed, they retreated. During this retreat, they left behind newly uncovered land for living things to occupy, and as those living things moved in they laid down a record we can read now. As the ice retreated and plants started to grow near a lake, they release pollen(花粉). Some would fall into the lake, sink to the bottom and mix with the sand. By drilling into the lake bottom it is possible to read the record of the plant life around the lake. The fossil record seems clear; there is little or no evidence that entire groups of plants moved north together. Things that lived together in the past don't live together now, and things that live together now didn't live together in the past. Each individual living things moved at its own pace. The fossil record seems to be telling us that we should be thinking about preserving species by giving them room to move about－to respond to environmental changes.

    Recently I started discovering one thing which amazes me so much: how perfect everything is in the world we are living in! Just look, all day long we are busy working and just when we get tired, the night comes in, so we may sleep and relax. One day we may enjoy the bright sun and another day, when we get tired of the sun, the rain pours down.

    A few months ago I was so happy with my life. Later, I got tired from the happiness. I wished I would have some trial to strengthen my character and learn something new about life. I got what I wanted. Shortly after I got severe angina (心绞痛), so I had to stay home for several weeks. During this period I had time to rethink my life and discover myself. The lessons were terrific, but I felt grateful for this time.

    Another example: I have a friend, who primarily thinks about having fun. Once I thought why we get along well with each other and what in me attracts her. A couple of days ago I found the answer. I like calmness and silence. She likes noise and agitation (热闹). We attract each other just to balance ourselves, in other words, to give some drive to me and some calmness to her!

    So remember that the universe is so wise that it will try to balance you. As for me, this is perfect because extremes create suffering: too much food – too little food, too cold – too hot, too much fun – too little fun.

    When I was small and my grandmother died, I couldn't understand why I had no tears. But that night when my dad tried to cheer me up, my laugh turned into crying.

    So it came as no surprise to learn that researchers believe crying and laughing come from the same part of the brain. Just as laughing has many health advantages, scientists are discovering that so, too, does crying.

    Whatever it takes for us to reduce pressure is important to our emotional health, and crying seems to work well. One study found that 85 percent of women and 73 percent of men report feeling better after crying.

    Besides, tears attract help from other people. Researchers agree that when we cry, people around us become kinder and friendlier and they are more ready to provide support and comfort. Tears also enable us to understand our emotions better; sometimes we don't even know we're very sad until we cry. We learn about our emotions through crying, and then we can deal with them.

    Just as crying can be healthy, not crying - holding back tears of anger, pain or suffering - can be bad for physical health, Studies have shown that too much control of emotions can lead to high blood pressure, heart problems and some other illnesses. If you have a health problem, doctors will certainly not ask you to cry. But when you feel like crying, don't fight it. It's a natural –and healthy-emotional response.