The birth of the eco-conscious movement owes a great deal to the accomplishments in the 1970s.
     One of the decisive moments in this decade was the establishment of Earth Day on April 22，1970.
     Although many people have heard of this annual holiday，few know the fascinating backstory behind its creation.To commemorate （紀(jì)念） Earth Day's 52nd birthday，let's review the tale behind this green holiday.
     The two lawmakers that deserve the most credit for creating Earth Day include Senator Gaylord Nelson and Congressman Pete McCloskey.Both of these eco-conscious legislators （立法者） were searching for a way to use the new teaching techniques of the 1960s to raise awareness of environmental challenges.The most direct cause for their efforts was the disastrous 1969 oil spill （ 石油泄露） in the Santa Barbara Canal.
     After news of the Santa Barbara oil spill broke，Nelson and McCloskey worked day and night to make their "eco-consciousness class" a reality.This one-day，educational class was modeled on the "teach-in" movement that was becoming increasingly common during the Vietnam War.The two lawmakers—plus environmentalist Denis Hayes—focused their efforts on teaching college students about environmental issues.
     Interestingly，Earth Day organizers chose the date April 22 to accommodate （適應(yīng)） students' short attention spans.According to Earth Day's official website，this day was long after Spring Break，but it was also well before Final Exams.Therefore，students were more likely to pay attention rather than plan holidays or worry about Finals.
     The first Earth Day celebration grew far larger than anyone could've expected.In addition to college students，many faith-based groups and community organizations decided to support this experimental education session.It's estimated at least 20 million Americans took part in the first Earth Day by attending teach-in sessions and marching on the streets for environmental change.
     For the first two decades of its existence，Earth Day was only an American holiday.It wasn't until the late 1980s that Denis Hayes began working on bringing Earth Day to the rest of the world.In 1990，over 140 countries officially adopted Earth Day as an annual holiday.Two years later，the UN decided to put together its first Earth Summit to help global leaders figure out eco-friendly policies.
     Throughout the following decades，Hayes worked hard to bring more nations into the Earth Day Network.It's now estimated that over 190 countries recognize Earth Day，making this one of the world's most widely celebrated non-religious holidays.

（1）What brought about the eco-conscious movement directly？

The establishment of Earth Day on April 22，1970

The establishment of Earth Day on April 22，1970

（2）Why did Earth Day organizers choose the date April 22 as Earth Day？

Because it accommodate students' short attention spans.

Because it accommodate students' short attention spans.

（3）Please decide which part is false in the following statement，then underline it and explain why.
Millions of people celebrated the first Earth Day by attending teach-in sessions and marching on the streets，all of whom were college students.

Many faith-based groups and community organizations decided to support this experimental education session.

Many faith-based groups and community organizations decided to support this experimental education session.

（4）What do you think is the significance of celebrating Earth Day？ （In about 40 words）

The significance of celebrating Earth Day is to make many countries realize the importance of protecting the environment.

The significance of celebrating Earth Day is to make many countries realize the importance of protecting the environment.