Do you still remember the haze（雾霾）in the winter? So many people got terribly ill during or after the haze. {#blank#}1{#/blank#}Here is advice for you to protect yourself in hazy weather.

    Spend less time outdoors.This is the most effective way for self-protection in such bad weather.With PM2.5 increasing 103mg per cubic meter,residents will risk a 2.29% increase of death,which experts found out in 2012.If you have to get out,avoid riding bicycles.{#blank#}2{#/blank#}

    Close your windows.Experts advice residents to avoid opening windows at home.If you have to ,avoid the time when smog is at its densest（浓的）.{#blank#}3{#/blank#}Besides,you can keep plants with broad leaves at home to absorb dust,and use air purifiers（清洁器）.

    Smoke less.{#blank#}4{#/blank#}In hazy weather,smoking would be even more harmful.Smokers are advised to keep their distance from cigarettes before the weather gets better.

    {#blank#}5{#/blank#}For example ,wear special masks outside to avoid breathing in PM2.5.Then take off your coat after getting indoors and keep it away from your other clean clothes,Don't forget to wash your face,rinse（漱）your mouth,and clean your nasal cavity（鼻腔）to clean the particulate matters（颗粒物）that fall on you.Last but not least,keep off stimulating（刺激性）foods.

A.Wear masks.

B.Pay attention to other daily things.

C.Also avoid rush hours,when pollutants will be denser.

D.That's because haze does harm to the health of people.

E.Cigarettes could cause more particulate matters,which are included in PM2.5 .

F.Take more fruits and vegetables instead,which are good for lung,spleen（脾）and kidney（肾）.

G.For residents who use air-conditioner,make sure your apartment has enough oxygen indoors.

    Researchers from France and Italy discovered that Canadian parents are less strict with their children than mothers and fathers in France and Italy.

    “Our most important finding was the difference between Canadians and the others,” said Professor Michel Claes, the lead author of the study. “Canadians focus on independence and negotiation. On the other hand, Italians, for example, exercise more control. We found Canadians seem to focus on negotiation in case of a conflict.”

    Claes said Canada, France and Italy were selected for the study because they share important cultural and social factors. “We chose French­Canadians because they share the same language as France, and originally came from France and share certain values. Italy was included because it was considered to have similar, strong and important family values,” he explained.

    The researchers examined the emotional ties between parents and their children by questioning 1,256 students aged 11 to 19 years old.

    Canadian students reported less control and more free actions, according to the study. Italian parents were stricter and French parents were somewhere in the middle.

    Claes explains that the differences lie in education in Canada, France and Italy.

    “North America has its own educational values, which promote individualization. Tolerance and comprehension are encouraged. Italy, on the other hand, promotes respect of authority, control, and the need for permission.” he said.

    Children from all three countries described their mothers as warm and communicative. Italian and Canadian children had similar feelings about their fathers, and reported high levels of emotional ties. But French fathers were generally thought by their children to be more distant and cold.

    “We were surprised by this,” Claes admitted.“It seems as though the relationships between French mothers and their children were becoming closer over time, while fathers maintain a form of distance and coldness, which is more of a source of conflict in France than in the other countries.”

    Our planet is home to about seven billion people. Since the 1990s, population experts have predicted the number would grow to nine billion before it begins to slow down and possibly decrease.

    But a new report predicts the world's population is likely to increase to almost 11 billion by 2100. Based on the most modem statistical tools, the new report makes use of government records and considers expert predictions, including death rates, birthrates and international migration, or people moving across borders. The report says during the rest of this century, Africa's population will grow from about 3.5 billion to 5.1 billion over the next 85 years.

    John is director of the United Nations Population Division. He says that in the past, researchers thought population growth in Africa would be similar to that of other areas. They expected slower growth rates as birth control use became more widespread. But he says those ideas were wrong.

    “The level of contraception use has continued to increase but slowly — more slowly than expected, and birthrate therefore has been falling less rapidly than expected, and the population therefore continues to grow somewhat more rapidly than we expected.

    The new findings are based on a joint research project of the United Nations and the University of Washington,

    The researchers believe the population of Asia will reach five billion by 2050. That is up from the current 4.4 billion. And then begin decline. The researchers also believe that North America, Europe, Latin America and the Caribbean area will have a total population of below one billion.

    John says the pressure of feeding the rising population is likely to be less than that might be expected.

    “The relatively good news is that the world has been winning the race between population growth and food production. If you look back historically over the last 50 years, certainly for the world as a whole and for many, most individual countries and regions, the increase in food production has outpaced the increase of population.”

    It is difficult for parents of nearly every family to teach their children to be responsible for housework, but with one of the following suggestions, you really can get your children to help at home.

    If you give your children the impression that they can never do anything quite right, then they will regard themselves as unfit or unable persons. Unless children believe they can succeed, they will never become totally independent.

    My daughter Carla's fifth-grade teacher made every child in her class feel special. When students received less than a prefect test score, she would point out what they had mastered and declared firmly they could learn what they had missed.

     You can use the same technique when you evaluate (评价) your child's work at home.

    Don't always scold and give lots of praise instead. Talk about what he has done right, not about what he hasn't done. If your child completes a difficult task, promise him a Sunday trip or a ball game with Dad.

    Learning is a process of trying and failing and trying and succeeding. If you teach your children not to fear a mistake of failure, they will learn faster and achieve success at last.

    Most young people enjoy some forms of physical activity. It may be walking, cycling, swimming, or in winter, skating or skiing. It may be a game of some forms—football, basketball, hockey, golf or tennis. It may be mountaineering.

    Those who have a passion for climbing high and difficult mountains are often looked upon with astonishment. Why are men and women willing to suffer cold and hardship, and to take risks in high mountains? This astonishment is caused, probably, by the difference between mountaineering and other forms of activity to which men give their leisure.

    Mountaineering is a sport and not a game. There are no man-made rules, as others, as there are for such games as golf and football. There are, of course, rules of different kinds which would be dangerous to ignore, but it is this freedom from man-made rules that makes mountaineering attractive to many people. Those who climb mountains are free to use their own methods.

    If we compare mountaineering with other more familiar sports, we might think that one big difference is that mountaineering is not a “team game”. We should be mistaken in this. There are, it is true, no “matches” between “teams” of climbers, but when climbers are on a rock face linked by a rope on which their lives may depend, there is obviously teamwork. The mountain climber knows that he may have to fight forces that are stronger and more powerful than man. He has to fight the forces of nature. His sport requires high mental and physical qualities.

    A mountain climber continues to improve in skills year by year. A skier is probably past his best by the age of thirty. But it is not unusual for men of fifty or sixty to climb the highest mountains in the Alps. They may take more time than younger men, but they perhaps climb with more skills and less waste of effort, and they certainly experience equal enjoyment.

ChatGPT is a chatbot. Some schools {#blank#}1{#/blank#} （ban）it since its birth. They need time to make rules about {#blank#}2{#/blank#} it's to be used properly in class. Some teachers see it as a {#blank#}3{#/blank#} （cheat）tool. But many principals believe it's too late to keep AI out of classrooms. A growing number of {#blank#}4{#/blank#} （educate） say the panic about AI is a lot like the panic caused by the Internet when it was new. One of them says, "ChatGPT is to English and to writing what the calculator is to math.