In 2000, when I was around seven years old, all my family were coming back from a T-ball game, which was our usual weekend adventure, but unlike every other weekend, a surprise was waiting for us in our driveway—two adult geese and a small goose. Obviously startled by our return, the adults flew away in panic, with their baby, too young to fly, left in place, tiny and delicate.

Hours passed one after another, and night eventually fell. However, with it also came a deep chill and a fear of watchful animals. It was apparent that the gosling needed protection, warmth, and food to make it to the morning, so we had to help it, and we brought him onto our back yard.

We all pretty much slept with one eye open till morning came. And then another morning. And still another. Each morning, we would try to drive the goose away to his parents, who kept coming back to our yard. He wouldn’t go to them, though, and neither would they come close enough to claim him. We kept this up for five days, but no luck. Realizing the young goose had clearly decided we were his family by then, we had to give him a name, calling the little guy Peeper, because he would often follow us around the yard making a peeping(唧唧叫) noise, nonstop. Besides, we decided that Peeper was a boy. I don’t know why; it just felt right.

A year passed and we settled into a routine. Peeper slept on our back yard each night and, in typical goose fashion, used it as a latrine(公共厕所). My dad would spray off all the goose droppings daily. Part of this ceremony included Dad throwing Peeper up into the air so he could flap its wings and flew a loop(圈) around the house, and then came back again once the porch was clean.

Days turned into weeks, and weeks turned into months.

Before we knew it, the little thing had grown into a big bird with two powerful wings.

It came as a total surprise to me when, in 2020, an adult goose made his way back to my family home.

Rivers are one of our most important natural resources. Many of the world’s great cities are located on rivers and almost every country has at least one river     1     (flow) through it, which plays an important part in the lives of     2     (it) people.

Since the beginning of history, people     3     (use) rivers for transportation. The Yellow River and Changliang River play a large role in China. The Mississippi, the     4     (long) one in the United States ever influenced the American people     5     (great) in history. The lifeline of Egypt is the Nile. Rivers provide fresh water     6     drink, grow crops, make electricity and chances to have fun for those     7     live along their banks.

    8     the cities grow in size and industries increase in number, the river water is severely being polluted. It urges all countries to make     9     (decide) and take immediate action to stop it from     10     (pollute) any more.

5 . We may think we're a culture that gets rid of our worn technology at the first sight of something shiny and new, but a new study shows that we keep using our old devices(装置) well after they go out of style. That’s bad news for the environment — and our wallets — as these outdated devices consume much more energy than the newer ones that do the same things.

To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York tracked the environmental costs for each product throughout its life — from when its minerals are mined to when we stop using the device. This method provided a readout for how home energy use has evolved since the early 1990s. Devices were grouped by generation — Desktop computers, basic mobile phones, and box-set TVs defined 1992. Digital cameras arrived on the scene in 1997. And MP3 players, smart phones, and LCD TVs entered homes in 2002, before tablets and e-readers showed up in 2007.

As we accumulated more devices, however, we didn't throw out our old ones. "The living-room television is replaced and gets planted in the kids' room, and suddenly one day, you have a TV in every room of the house," said one researcher. The average number of electronic devices rose from four per household in 1992 to 13 in 2007. We're not just keeping these old devices — we continue to use them. According to the analysis of Babbitt's team, old desktop monitors and box TVs with cathode ray tubes are the worst devices with their energy consumption and contribution to greenhouse gas emissions（排放）more than doubling during the 1992 to 2007 window.

So what's the solution（解决方案）? The team's data only went up to 2007, but the researchers also explored what would happen if consumers replaced old products with new electronics that serve more than one function, such as a tablet for word processing and TV viewing. They found that more on-demand entertainment viewing on tablets instead of TVs and desktop computers could cut energy consumption by 44%.