Are you a happy person most of the time? Or do you easily get angry sometimes? Everyone has a different temperament (脾气). It is usually believed that both genes (基因) and environment may affect people's temperaments in different ways. But now scientists have found that the season of birth also plays a role.

 Scientists from Budapest, Hungary, studied 400 university students. In the study, the students needed to finish a questionnaire (问卷). The purpose of it was to find out which of four kinds of temperaments they most had. From the questionnaire, scientists found that the students always answered something like "My mood often changes for no reason" and "I love to deal with new projects, even if it is risky". These answers were then matched with their birthdays.

  They discovered that people born in summer easily change between sad and happy moods compared to people born in winter. Those who always feel positive are mostly born in spring and summer.

The study also found that those born in autumn less probably had a mood of depression which may easily drive them to cry, while those born in winter were not easier to be angry.

 Scientists said that this was probably because the seasons had an influence on certain chemicals in the human body. And the chemicals are important to control people's moods even in adult life.

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"It seems that when you are born may increase or decrease your chance of developing certain mood disorders (紊乱)," lead scientist Xenia Gonda told The Telegraph.

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    For many years, scientists have said that the earth is getting warmer. Now they have found something new—hot cities! In the southern US, they have found that cities become very hot in summer. For example, the city of Atlanta in Georgia has roof(屋顶) temperature of up to 50^oC while it is 27℃ in the streets! At night, the outside of buildings stays so hot that the heat of the city causes storms over the city!

    China also has the same kind of problems. Every year more farmland is used for factories or offices. More housing is needed, too. As people become richer, they buy more cars. New roads are needed and new car parks are built in the city centers. This all makes cities hotter.

    It isn't easy to change the situation. City planners say that we should plant more trees in the middle of cities. Every new street should have trees on both sides, they say. Trees make the temperature lower, so we should have more trees in our parks and squares. We should also paint our roofs white. If we do this, they do not become so hot. Every roof in a hot and sunny country should have solar(太阳的) roof panels. The electricity from these can be used to run the air conditioners (空调)in the buildings.

    People continue to cut down forests around the cities. This makes the problem worse. Cities are growing faster and faster. By the year 2025, four fifths(五分之四) of the population will be living in cities. If we go on like this, there will not be enough farmland to feed everyone in the world.

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 Today we learn about World Water Day. Our teacher asks us to find something about it and then write a passage. So I find the following information online. 

{#blank#}1{#/blank#} One of them is water pollution. Polluted water is very bad for people' s health.  And it is also bad for marine life. 

{#blank#}2{#/blank#} It teaches people that fresh water is very important. Fresh water takes up only about 2. 8% of the total water. It reminds us to save water. And it asks people to do something to save water. 

{#blank#}3{#/blank#} They teach their students that saving water is very important. For example, a university had a contest for "the Best World Water Day Poster" before. And a primary school once had a "My School Toilet" contest. 

{#blank#}4{#/blank#} For example, "Valuing Water" in 2021, "Groundwater— Making the Invisible Visible" in 2022 and "Accelerating Change" in 2023. People all over the world celebrate the day now. 

Why does the writer write the passage? (回答不多于10个单词){#blank#}5{#/blank#}

We live in the age of the computer. Scientists, teachers, writers and even students use{#blank#}1{#/blank#} to do all kinds of work {#blank#}2{#/blank#} . more than thirty years ago, computers couldn't do much work. They were big and expensive. Only a few people were {#blank#}3{#/blank#} in them and knew how to use them. Today computers are smaller and {#blank#}4{#/blank#} . They can do a lot of work for people. 

Computers play {#blank#}5{#/blank#} important role in our everyday life. They can work faster than people. Besides, they {#blank#}6{#/blank#} fewer mistakes. Computers can help people {#blank#}7{#/blank#} different work. {#blank#}8{#/blank#} use them to write articles. Teachers use {#blank#}9{#/blank#} to give lessons. Students use them to study. Nowadays computers are necessary in our daily life. They make our life easier and more interesting. What do you think our lives will {#blank#}10{#/blank#} like without computers?