题型:阅读理解 题类:模拟题 难易度:普通
四川省成都外国语学校2019届高考英语一诊试卷
Lucy, whose skeleton(骨骼) was discovered in Ethiopia in 1974, died shortly after she fell out of a tree, according to a new study published Monday in the British journal Nature.
For their research, Kappelman and Dr. Richard Ketcham used a CT scanner to create more than 35,000 "slices" of Lucy's skeleton. Scientists named her Lucy from the Beatles song "Lucy in the Sky with Diamonds", which was played at the camp the night of her discovery.
The following analysis of the slices showed sharp, clean breaks seen at the end of Lucy's right humerus (肱骨) are similar to bone breaks seen in victims of falls.
The researchers concluded that these and other breaks in her skeleton show that Lucy, who is believed to have stood about 3 feet 6 inches and weighed about 60 pounds, fell feet first and used her arms to support herself﹣but that the injury was too severe to have been survivable.
The researchers estimate that Lucy was going about 35 miles an hour when she hit the ground after falling from a height of roughly 40 feet, according to the statement.
That sounds plausible. But other scientists are doubtful. "There are countless explanations for bone breaks," Dr, Donald C, Johanson, director of the Institute of Human Origins and one of the scientists who discovered Lucy, said, "The suggestion that she fell out of a tree is largely a just﹣so story and therefore unprovable." Johanson said it was more likely that Lucy's breaks occurred long after she died, saying that "elephant bones appear to have the same kind of breaks, It's unlikely they fell out of a tree.
But the new research focused on "a small number of breaks" that are consistent with "high﹣energy bone﹣to﹣bone influences" and which differ from the sorts of breaks commonly seen in other collected bones. Kappelman responded in an email, "These appear to have occurred at or near the time of death."
Learning English is challenging because of the various rules and exceptions to the rules. The best way to learn English is to hear it spoken and repeat the words as you hear them. {#blank#}1{#/blank#}You will learn how to make English a daily part of your life in order to learn to speak it quickly.
{#blank#}2{#/blank#} Ask a friend to help you write letters of English alphabet on index cards. You should write a letter on each card. Practise the letters by mixing up the cards and saying the letters. You can ask your friend to help you pronounce the letters and quiz you on your knowledge.
Make your own videos in English. If you have a video camera, you can tape yourself speaking English and practice along with your own video. {#blank#}3{#/blank#} Watch your videos daily, and repeat what is being said.
Get a private tutor. A professional English instructor can give you one-on-one instruction that will help you understand the rules of English. Your instructor can teach you how to write and speak English. {#blank#}4{#/blank#} You can also inquire at your local community college.
Watch movies with English subtitles. When watching a movie in your native language, use the English subtitles so you will understand the connection between your language and English.
{#blank#}5{#/blank#} You will make mistakes, and that is OK. You need to practice English as much as possible in order to quickly learn to speak the language fluently.
A. Learn the English alphabet. B. Use every opportunity to speak English. C. You can subscribe some English magazines to learn English. D. Constant repetition is the key to remembering words in English. E. If you have any difficult points, you can consult your dictionary at any time.. F. You can find an English tutor by placing an advertisement in your local newspaper. G. You can make a play in which you and a friend are having a simple conversation in English. |
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