The topic of my speech today is "being a good listener".

Good listening can always show respect, promote understanding and improve interpersonal relationships.

Many people advise parents to listen to their children more, so that children will understand better and the generation gap will be easily narrowed. Teachers should listen to students' opinions more, so that they can better meet the needs of students and establish good relations with them; Students should listen to their classmates' opinions more, so that they can help each other and learn from each other, and friendship can be established.

What I want to emphasize is that each of us should listen to others more. Show your respect and never interrupt others until they have finished speaking; Use supportive silence or knowing smile to show your interest; Even if you don't like different opinions, accept them with an open mind. In a word, good listening can really bring us closer to each other. (15 1 word)

Thank you for listening!

A new study warned on Thursday that half of the world's population will face food shortages by the end of this century due to climate change.

According to the researchers, by 2 100, there is a 90% chance that the lowest temperature in tropical and subtropical areas will be higher than the highest temperature recorded so far in these areas.

According to direct observation and data collected from 23 computer models about the earth's climate change patterns, the impact of these predictions on crop growth in these areas will be terrible.

David batty Stie, a professor of atmospheric science at the University of Washington, said: "The pressure of temperature itself on global food production will be enormous, which has not taken into account the pressure of high temperature on water supply."

Researchers say that in the tropics, the hottest temperature will reduce the yield of corn and rice by 20% to 40%.

Warmer weather will also reduce the moisture in the soil and further reduce the yield.

About 3 billion people, that is, half of the world's population, currently live in tropical and subtropical areas, and their number will double by the end of this century.

These areas extend from northern India and southern China to most parts of Australia and the whole of Africa, and also from the southern United States to northern Argentina and southern Brazil.

Last Thursday, a new study warned that due to the influence of climate change, it is estimated that half of the world's population will face the threat of food shortage by the end of this century.

Researchers say that by 2 100, the lowest temperature in tropical and subtropical areas will exceed the highest temperature that has occurred so far in these areas, and the possibility of this change will reach 90%.

By directly observing and analyzing the data of 23 computer models of global climate change patterns, researchers predict that climate change will have a terrible impact on food cultivation in these areas.

David, a professor of atmospheric science in Washington? Battisti said: "The temperature itself will have a great impact on global food production, which has not taken into account the water supply problem caused by high temperature."

Researchers say that extreme high temperature will reduce the yield of corn and rice in tropical areas by 20% to 40%.

In addition, high temperature will also reduce the moisture in the soil, leading to a further decline in grain output.

At present, half of the world's population, about 3 billion people, live in tropical and subtropical areas, and the population of these areas will double by the end of this century.

Northern India, southern China, most parts of Australia, the whole of Africa, the southern United States, northern Argentina and southwestern Pakistan will all be affected.