【单选题】It has become harder and harder for a teenager to stand up against the popularity wave and to go his or her own way. Industry has firmly opened up a teen-age market. These days every teenager can lear...
【简答题】Hundreds of years ago, life was much harder than it is today. People didn’t have modern machines. There was no modern medicine, either. Life today has brought new problems. One of the biggest is pollu...
【简答题】Hundreds of years ago, life was much harder than it is today. People didn't have modern machines then. There was no modern medicine, either. Life today is better than it used to be, but at the same ti...
【简答题】Reading Passage 1 Light Pollution Light Pollution is a threat to Wildlife, Safety and the Starry Sky A After hours of driving south in the pitch-black darkness of the Nevada desert, a dome of hazy gol...