1 . Earth Hour is organized by the World Wide Fund for Nature. It's a big event usually at the end of March every year. On this evening, people “go dark”.     1    

It's true that turning off lights for just one hour saves only a small amount of power.    2    On one level, joining in Earth Hour makes people think about the problem of climate change and what we can do in everyday life to protect nature.

But on another level, a large number of people’s acting together sends a powerful message to governments and companies.     3     They begin considering green issues when big decisions.

The logo(标识) of Earth Hour is “60+” .The number 60 is for the 60 minutes of Earth Hour.     4     In fact, people who join in Earth Hour say that taking part makes them want to do more for the environment.

    5     Musicians give concerts by playing acoustic(原声的) instruments instead of electric ones, and using candles instead of electric lights. Celebrity chefs have created special recipes for families to prepare and eat by candlelight. Tree-planting sessions, group walks and runs are also among the options.

A．But this is only the beginning.

B．Earth Hour represents every hour of every day.

C．After all, everyone has to answer for what they have done.

D．Besides turning off the lights, people get involved in other events.

E．It pushes them to take urgent measures by making changes to policies.

F．That is, they switch off all unnecessary lights at the same time for one hour.

G．The plus invites people to continue their action even after Earth Hour is finished.

2 . You may have heard of the Red Cross. It is an organization that helps people who are in need. It may be because of a flood, a war or an earthquake. No matter how bad the situation is, it will always be there to help! But it hasn’t always been this way. For example, in the United States, but for the passion (热情) of a woman named Clara Barton, the American Red Cross may have never been formed!

When Clara was young, she was very shy. One day when she was 11 years old, her elder brother, David, was badly injured. He was ill for two years. Clara cared for him the whole time. Through this experience she learned something very valuable about herself. She found out that she came alive when she cared for others.

Soon, Clara began taking care of injured animals. Neighbors began bringing their pets to her. And almost always, she made them better. When she was older, she became a nurse in the American Civil War and she helped save hundreds of soldiers.

After the Civil War, Clara went to Europe for a holiday. But that did not last long. Soon she began caring for soldiers in battle once again! But this time, she learned about an organization called the Red Cross which worked alongside her on the battlefield. Its task was to help those who needed it most.

She believed that the Red Cross was badly needed in America. Over several years, she asked   different Presidents to bring the Red Cross to America. They all said no. But then, thanks to her persistence, one of the Presidents changed his mind! And the American Red Cross was born.

1. What is the second paragraph mainly about?

A．Who Clara cared about most.	B．Why Clara liked to care for others.
C．What Clara did for the Red Cross.	D．How Clara discovered her own value.

2. Clara first learned about the Red Cross when she ________.

A．took a holiday in Europe

B．cared for her brother

C．helped injured soldiers in Europe

D．worked as a nurse in the American Civil War

3. Which of the following can replace the underlined word “persistence” in the last paragraph?

A．Encouragement.	B．Determination.
C．Bravery.	D．Achievement.