Before I went to Nature High Summer Camp, I didn't have many opinions about the environment-I _______ the environment was for other people to worry about. That _________didn't last long at the camp. I _______ learned about land use and forest management and started to _______ the world around me.

The person who _________ me most was Diane. She had worked in the _________ for twenty years and was by far the most _________ professional there. When she started talking, I hung on her every _________ and thought that everything she said made sense.

Diane _______ me by suggesting that putting out forest fires isn't ______________ a good thing-in fact, the cycle of nature makes it ______________ that fires take place because they clear out dead materials and enrich the ____________. Because the Forest Service put out all the fires in the past, the accumulation（堆积）of dead materials meant that a forest fire would grow bigger and consume______________.

Diane said that ______________ logging（伐木）would actually help the area because it would clear out the ______________ trees and allow new trees to grow. Diane added that luckily, necessary logging consumption had increased, which could ______________ the environment.

I've ______________ a lot from Diane. I ______________ that humans should protect the environment. There are other ______________ for us to do the environment a favor, such as planting trees, ______________Paper and recycling water.

The last complete ice shelf in the Canadian Arctic has collapsed(倒塌).The Milne Ice Shelf is _______ Ellesmere Island,Canada.The shelf lost _______ 40 percent of its area in just two days at the end of July.

Above normal air temperatures,offshore winds and open water in front of the shelf are all parts of the _______ for its break-up.The shelf area shrank(缩小）by about 80 square kilometers.By comparison,the island of Manhattan in New York _______ about 60 square kilometers.Temperatures in the polar area have been _______ intense(强烈的).Summer in the Canadian Arctic this year has been 5 degrees Celsius_______ the 30-year average.That has _______ smaller ice caps,_______ can melt quickly.As a glacier disappears,more bedrock is left _______.This then speeds up the melting__________. A research camp,including instruments for measuring water flow through the ice shelf,was lost when the shelf at Ellesmere Island collapsed.

＂It was only a __________ of time,"said Mark Serreze,director of the National Snow and Ice Data Center. His study showed the ice caps were__________ to disappear within five years.Their disappearance was __________ last month,when NASA satellite images of the area showed a complete lack of snow and ice.Serreze's __________ trip to the Arctic was many years ago."When I was there in the 1980s,I knew every square inch of those ice caps,"Serreze said."You have the good __________.It's like your first girlfriend.I want her back."

Afroz Shah, a lawyer in Mumbai, hasn’t had a weekend off in four years. But he hasn’t spent this time preparing for_____. His mission( 使命)? Saving the world’s oceans from____ pollution.

It’s a calling he found in 2015 after moving to a community in Mumbai called Versova Beach. He had played there   as a child and was _____to see how much it had ______. The sand was no     longer___ because it was covered by a layer of garbage — most of it is plastic waste.

“The whole beach was like a _____ of plastic,” he said, “It hurt me.” The ______ mess Shah had seen is part of a global environmental crisis. Tons of plastic ______in the world’s oceans each     year. “Plastic in the ocean is a____. And the sea-species have no choice at all,” Shah said, “We are __ their habitats.”

In 2015, Shah began picking up plastic waste from the _____every Sunday morning. At first, it was just him and   a neighbor, and then he began   calling on others to join in. Word _____and with help from social media, more volunteers____.

For Shah, the work has always been a _____   journey, but it has earned global attention. After he   was _____as a Champion of the Earth in 2016, Shah now devotes his free time to this ______.   He’s   spent 209 weekends on this mission, ____   more than 200,000 volunteers to join him. By     October 2018, Versova   Beach was _____clean and Shah’s cleanups expanded to another beach.   “This world talks too much. I think we must talk _____   and do action more,” he said when     interviewed by CNN in October 2019. “I see___ with these youngsters rising up.”