1 . Life will be peaceful if you always do kind things. I teach my daughters to develop a habit of _____ others. The little acts of _____ give you opportunities to provide service for others. They can make you remember how great it feels to be kind and helpful.

We _____ in a rural (乡村的) area. Most of what we see is beautiful nature. One of the exceptions to the _____ is the rubbish that some people throw out of their car windows as they drive along the rural roads. One of the few _____ of living there is the lack of _____ public services, such as rubbish collection, which is common in the city.

A helping behavior that I practice regularly with my daughters is _____ rubbish in our neighborhood. My daughters often have a match to see who can collect the most rubbish. They will often say to me in a(n) _____ voice, “There’s some rubbish, Daddy—stop the car!” And if we have time, we will often get out of our car and pick it up. _____ it may seem strange, we do it. In fact, we enjoy it. We pick up rubbish in parks, on sidewalks, almost anywhere.

One day I saw a stranger picking up rubbish on the road. I stopped. He ______ his head and smiled, ”I saw you doing this with your family. It’s a good ______ to protect our environment.“

There are many other ways to ______ kindness for others. You may share a dinner with a beggar, visit ______ old people in the nursing home, or help the blind ______ the street. You can think of something that can be finished _______but helpful. It is fun, self-satisfying, and What’s more, it can set a good example. Helping others is helping yourself.

5 . Conservationists are breeding (饲养) lions in the Southern African nation of Zimbabwe. The wildlife experts hope to increase the lion population to keep the great cats from _______.

In some areas, lions and human beings are _______ control of land. Researchers believe something must be done quickly to _______ the animals.

The African Lion and Environmental Research Trust (ALERT) has more than 100 _______ in its breeding program. Antelope Park Farm is one of two sites ALERT operates in Zimbabwe.

Gary Jones heads the Antelope Park Farm. He says ALERT has become involved _______ a sharp drop in the number of lions. His group believes this has been _______ mainly by humans. There are more people moving to this area every year. The lions have _______ land on which to live.

Gary Jones says the decrease in the lion population affects the whole _______. He adds that other African nations are also seeing the _______ effects of this.

There are countries, ________ in central and north Africa, where the lion population has reached a(n) ________ level. Burundi, a country of east-central Africa, for instance, does not have lions in its national parks. It ________ wants to have lions reintroduced back into its national parks. The reason is that when you take the lion out of the equation (平衡), suddenly you get all ________ things to start happening with the balance of ________. For example, you get too many prey (猎物) species, like giraffes and zebras.

The United Nations’ Food and Agriculture Organization says wild animals are threatened when farmers try to ________ their plants or animals.

6 . I fell in love with Yosemite National Park the first time I saw it, when I was 13. My parents took us there for camping. On the way out, I asked them to wait while I ran up to E1 Capitan, a huge rock of 3,300 feet straight up. I touched that giant rock and knew ________ I wanted to climb it. That has been my life’s passion ever since —   ________ the rocks and mountains of Yosemite. I’ve long made Yosemite my ________.

About 15 years ago I started seeing a lot of _______, like toilet paper, beer cans, and empty boxes, around the area. It’s _______ me why visitors started respecting the place ________ and treated such a beautiful home-like place this way.

I tried _______ trash (垃圾) myself, but the job was too big. I would spend an hour or two on the job, only to find the area trashed all over again weeks later. Finally, I got so _______ it that I decided something had to change.

As a rock-climbing guide, I knew ________about organizing any big event. But in 2004, together with some climbers, I set a date for a cleanup. On that day, more than 300 people showed up. Over three days we collected about 6,000 pounds of trash. It was amazing how much we were able to ________. I couldn’t believe the ________ we made — the park looked clean!

Each year volunteers come for the cleanup from everywhere. In 2007 alone, 2,945 people picked up 42,330 pounds of trash and ________ 132 miles of roadway.

I often hear people ________ about their surroundings. If you are one of them, I would say the only way to change things is by doing rather than complaining. We need to teach by ________. You can’t blame others ________ you start with yourself.

7 . The Keeper of the River

An old man had been working for many years for a town. His job was to clear away natural waste from the pool water in the hills, which made up the lovely river flowing through the town nearby. Quietly and_______, the old man guarded the hills, removed the leaves and branches, and cleaned up the dirt that would have _______ and polluted the fresh flow of water. The town soon became a popular attraction for tourists. Elegant swans (天鹅) floated along the clear river and the view was so beautiful_______words.

Years passed. One evening the town committee met. As they reviewed the budget, one man’s eye caught sight of the salary figure being paid to the seldom seen keeper of the river. He asked, “Who is the old man? Why do we continue to employ him? No one in town ever see him. For all we know, the strange keeper of the hills isn’t doing his job. His position isn’t necessary any longer. ” Then they voted to _______ the man.

For several weeks, nothing changed……

By early autumn, the trees began to _______their leaves. Small branches broke off and fell into the pools of the hills,_______the flow of the shining water. One afternoon, someone noticed a slight yellowish-brown color in the river. A few days later, the water was much_______. Within another week, an oily something covered some sections of the water along the banks, and a terrible _______ was soon sensed. Swans left, and so did the tourists. The only thing that was now visiting the village was disease and sickness.

Quickly, the embarrassed town committee called a special meeting. Realising their huge error in_______, they rehired the old keeper of the river again, and within a few weeks, the river began to clear up. Swans and tourists came back again and new life returned to the small town in the Alps.

Never ignore the seeming smallness of a task, job, or life. They may all make a________.

8 . Esther encourages her two kids to make crafts and drawings from old bits of packaging. She began _____ her family’s wastage when she moved house and decided that she would leave all single-use _____ behind and buy everything she need from second-hand shops.

She said, “It’s cheaper and you know that the items will _____ being used instead of being set aside — so it’s just perfect! Each of us plays a big _____ in taking care of the environment. It’s _____ to try to help rather than just keep complaining about the current situation.”

Any glass container is _____ and repurposed for something else. This means that the family only send a piece of _____ to landfill every two weeks on average. She tries not to buy any plastic at all, but when she does, she will get it _____ washed and recycled.

The family also grow their own tomatoes, lettuce, and some other vegetables in the garden, and have orange trees outdoors. Esther has also _____ herself in a community of friends who ______ items with each other that they need, like furniture or plates.

She said, “We tried to use the minimum ______ and take some toys and baby equipment from friends and relatives. If we really had to ______ anything, first we tried at the ______ market.”

To educate her kids, Esther takes them out on nature walks to the forest where they ______ rubbish as they go.” They enjoy this ______, because they know it’s better for the environment,” she said.

9 . As our Earth’s temperature rises because of climate change, it is having unexpected effects on our world’s forests. When temperatures rise, trees close their stomata(气孔) to _____ the loss of water, and this, in turn, slows down the _____ of photosynthesis(光合作用). As a result, these trees are shorter, grow more slowly, and thus have a _____ death rate.

Climate change also increases the _____ of droughts and wildfires. After wildfires, it takes a long time for the forest system to _____, and in some cases, the forests are _____ forever. Trees under the circumstances are also _____ to attacks by bacteria(细菌). In tropical forests, vines(藤本植物) that use the trees as _____ can often choke the trees and rob them of nutrients. Finally, humans have _____ the forest landscape through logging. When trees are replanted in the soil, they might never grow as large as the ______ trees that were cut down.

As these forests disappear, species that once called them “home” are forced to change, ______ the variety of those systems. ______, some endangered species are unable to ______ and die. Old-growth forests are disappearing in the regions of our world. When these old-growth forests die, younger forests that are reestablished in the same area will grow back weaker and smaller ______ poor vegetation. With trees dying increasingly and continuously, will future generations ______ the wonders of forests?

10 . Oleita thinks she may have a partial solution for two of her country’s persistent problems: garbage and poverty. It’s called the Chip Bag Project. The 26-year-old student and environmentalists from Detroit are asking for a(n)_______ of local snack lovers: _______ throw your empty chip bags into the trash, _______ them so she can _______ them into sleeping bags for the homeless.

Chip eaters drop off their _______ bags at two locations in Detroit: a print shop and a clothing store, where Oleita and her volunteer helpers _______ them. After they sanitize (净化) the chip bags in soapy hot water, they _______ them open, lay them flat, and iron them together. They use pad-ding (填料) from old coats to fill the insides.

It takes about four hours to _______ a sleeping bag, and each takes around 150 to 300 chip bags, _______ whether they’ re single-serve or family size. The ________ of the sleeping bag is “waterproof (防水的), light weight, and easy to ________ around,” Oleita told The Detroit News.

Since it started in 2020, the Chip Bag Project has collected more than 800,000 chip bags and has ________ 110 sleeping bags. Sure, it would be ________ to raise the money to buy new sleeping bags. But that’s only half the ________ for Oleita and her fellow volunteers. “We are ________ to making an impact not only socially, but environmentally,” Oleita says.