The scientists then tried to train half the birds to recognize the thornbill's cry as a warning sound. They tried to train the other half of the birds to recognize the computer-generated "buzz" as a warning call. They did so by playing the sounds in addition to ...
根据Most people have a 24-hour body clock.It's a natural rhythm(节奏) that influences sleepiness.But for people with delayed sleep disorder,it takes longer to complete the 24-hour body clock.So they usually go to bed later and wake up later,"(大多数人都有24小时生物钟...
went blind in one eye about 9years ago. Diana sometimes feels concerned about the way her eye looks now. The pupil(瞳孔)is no longer black; it's sort of "glows" in photos. Diana recently purchased a special contact lens (隐形镜片)that makes her eye look like it...
The United States is one of the world's wealthiest countries.Despite this,many Americans struggle just to put healthy food,or any food at all,on the table every day.One might think that a food shortage (1) is happening(happen) in America,but this is not the...
题目Papa's Straw HatPapa was a ranger.He worked with horses.He always wore clean clothes with a hat even when he worked.His hat was always the same kind of a cowboy hat-large black hat of heavy wool.He wore his hat full and high.I think he wanted to look tal...
题目No doubt there are ups and downs in life. Whatever the situation is, you shouldn't lose your joy of life. Life is for a limited period only and no one knows how long he/she will live, so why do you waste your precious time in worrying about the things...
Usually,a lion is made up of two dancers.One dancer controls the head.The other controls the tail."I think of it as a sport," says Anthony Huang,aged 16.He is a member of the New York Chinese Freemasons Athletic Club.Anthony performs(表演)as the lion's head.It...
根据上文a farmer's son,Naveen,along with his classmates has designed(设计)a low-cost cooling solution for vegetable sellers(一位农民的儿子纳文和他的同学一起为蔬菜销售商设计了一种低成本的冷却解决方案。)可知,这可以帮助蔬菜卖家在阳光下很容易保持食物新鲜。故选C。(2)考查动词。句...
题目 Music is a part of every culture around the world.In fact,the ability to appreciate music is built into our brains.Music makes us feel good.Many music studies look at the long-term benefits of being a music listener or participating in a music program as a child...
"What's the matter,Jerry?" called Mr.Lorry. "A message(9) foryou,Mr.Lorry.You've got to wait at Dover for a young lady. " "Very well,Jerry," said Mr.Lorry, "Tell them my answer is CAME BACK TO LIFE." It was a strange message,and a stranger answer.No ...