The world is not only hungry, but it is also thirsty for water. This may seem strange to you, since nearly 70% of the earth's surface is covered with water. But about 97% of that is sea water, or salt water. Man can only drink and use the other 3%—the fresh water from rivers, lakes, underground, and other sources. And we can not even use all of that. Even worse, some of it has been made dirty.

However, as things stand today, this fresh water is still enough for us. But our need for water is becoming larger and larger quickly—almost day by day. We should take steps to do with this problem now and in this way we can get away from a serious worldwide water shortage (缺少) later on.

We all have to learn how to stop wasting our valuable water. One of the first steps is to develop ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer system(下水道). From there it returns to sea or runs into underground places.

But even if every large city reused its water, we still would not have enough. All we'd have to do to make use of sea water in the world is to remove the salt. If we take these steps we'll be in no danger of drying up.

1. The world is thirsty for water because .

A. man hasn't got enough food to eat

B. we haven't got enough fresh water

C. only 70% of the earth's surface is water

D. more water is sent into sewer systems

2. The underlined word “valuable” means .

A. much and salty B. fresh and enough

C. dear and useful D. clean and helpful

3.The best but the most difficult way to solve (解决) the water problem of the world is to .

A. remove the salt from sea water

B. make the water in cities clean

C. take water from underground

D. make the need for water smaller

4.What's the best title (标题) for this passage?

A. The Importance of the Water

B. The World's Water Problem

C. The Thirsty World

D. Fresh Water and Sea Water

任务型阅读,通读下列短文,并根据短文内容在文章后表格中的空格里填入一个最恰当的单词,每空一词。

To make more people know it is important to save the Earth and make more people take action, people celebrate Earth Day. The first Earth Day was in 1970. And now, 192 countries celebrate Earth Day. Earth Day is on April 22nd, But saving the Earth is not just for grown-ups. Kids are also taking an active part in it.

The American writer and filmmaker Lynne made a film called Young Voice for the Planet. It lists a lot of stories about different children who help to save the Earth.

Team Marine, US: A group of students at Santa Monica High School started an organization (组织) called Team Marine. They tell people why plastic(塑料) bags are bad for sea animals and the environment (环境). In 2011, they made lawmakers (立法者)in their city stop people using plastic bags.

Alee, US: When he was 12. Alee started Kids VS Global Warming (全球变暖). It teaches people about weather change. He shares ways to stop the world getting warmer and warmer. Alee travels to encourage people to help stop global warming. He has given more than 70 talks across the country.

Olivia, US: When Olivia was 11, she heard about the 2010 oil spill (漏油) in gulf of Mexico (墨西哥湾). She painted 500 pictures of birds to raise money for the clean-up. She raised more than $200,000 to protect birds and other wild animals.

Earth Day

Date

On April 22nd

Purpose

(目的)

To make people understand the 1.____________ of saving the Earth and take action.

Different

2._______to save the Earth

Team Marine

A group of students3.____________ it. They made lawmakers stop people using plastic bags.

O

Alee

He started Kids VS Global Warming to teach people about weather change and share ways to stop global warming. He 4._____________ a lot and give many talks.

Olivia

She painted to raise money. She uses the money to protect birds and other 5.__________.

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