—________.You're here now.Come in and sit down.（ ）
Rose: Hi, Dave. Do you think the weather is fine today?
Dave: Yeah. And the air is also clearer than ever before.
Rose: En, the newspaper reports that the air is less and less (pollute) these days.
Dave: That's true. Fewer and fewer people (drive) cars to work since the government started the traffic control two months ago.
Rose: But the control is going to end in two weeks. What'll happen then? Are cars coming back to the road?
Dave: That's true, too, we all hope it will never end. On the hand, the traffic control has made things tough for people driving cars.
Rose: But it's worth the trouble. I believe clean air is most important thing.
Dave: However, many people don't think so. they can't drive cars, they'll even have (difficult) getting to work.
Rose: They can choose to take a bus the subway. And they can even ride a bicycle. There're many other ways to choose from, actually.
Dave: Some people think buses are too crowded and riding a bicycle seems very (tire)．
Rose: Anyway, it's still (well) than being trapped in a traffic jam under grey clouds and in dirty air.
On a snowy night, Julio Diaz was planning a meal. But when a teenager with a1in his hand got close to Diaz he came to 2 the evening was about to take a great turn.
The young man demanded Diaz's wallet, and Diaz 3it over. But just as the mugger turned to walk away, Diaz 4 after him, “Hey, wait a minute. You5something.”
The mugger turned around, 6.
“If you're going to be robbing people for the rest of the 7 ， you can take my coat to keep you 8.”
The teenager looked at Diaz, 9 asked why he would do such a thing. Diaz replied, “If you're willing to risk your 10for a few dollars, then I guess you must need the 11.” He told the young man he would be 12 to have someone to eat with.
The young mugger decided to 13 Diaz's offer, and they headed Diaz's favourite restaurant together. As they were sitting at the 14 ， the manager, and the dishwashers, all said hello to Diaz, and the young man was amazed. “You're even 15 to the dishwasher，” he said.
“Haven't you been taught you should be nice to everybody？” Diaz asked him.
“Yea, but I didn't think people actually 16 that way，” the teenager replied. Thanks to Diaz, he was beginning to see kindness wasn't such a strange thing.
When the 17 came, Diaz told the teenager that he'd have to get the check. 18 ， he still had Diaz's wallet.
But the teenager slide the wallet back 19 the table without thinking, and Diaz paid for the dinner. “If you 20 people right, you can only hope that they treat you right！” Diaz said.
In early October, thousands of people around the globe stepped outside to gaze at their local night sky. As part of an event called the Great World Wide Star Count, adults and kids looked for one of two constellations (星座) — Cygnus in the Northern Hemisphere and Sagittarius in the Southern Hemisphere. The observers recorded how many stars they saw and how bright the stars were, and then posted their results online.
The Star Count was part of a global effort to help scientists learn more about how light pollution affects our view of the night sky. Whether participants saw thousands of stars — or just a dozen — depended a lot on whether they were surrounded by darkness or by twinkling city lights.
On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, but when people are surrounded by city lights they're lucky to see 150 stars.
If you've ever driven toward a big city at night and seen its glow from afar, you've witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates the night sky. This light makes many stars invisible to people on earth.
Dust and particles of pollution from factories and industries worsen the effects of light pollution. When these particles float into the atmosphere, light ricochets (跳飞) off of them and scatters even more.
Light pollution doesn't only affect star visibility. It can harm wildlife too. Scientists don't entirely understand how animals navigate at night, but it's clear that artificial light can attract them, making them go off course. There's increasing evidence, for example, that migrating birds use sunsets and sunrises to help find their way.
假如你是校学生会主席，为了更好地保护环境，你代表学生会向全校学生发出倡议。请根据以下内容，写一份倡议书：1保护环境是我们的职责。
2我们要养成环保的习惯：(1)尽量步行上学或骑自行车上学(2)离开房间前关灯和其他电器(3)不随地扔垃圾（4）节约用水
3发出环保的号召。
注意：1 词数：120左右 2 可以适当增加细节，以使行文连贯
参考词汇：电器electrical applicance（可数名词）
Dear friends，
As we can see, the environment around us is getting worse and worse.
Thank you!
The students' Union
