Science textbooks around the world have become suddenly out of date. Four new chemical elements(元素)have been added to the periodic table. A big decision now lies ahead-elements 113,115,117 and 118 need to be given their official names and symbols.
New elements can be named after a mythical(神话的) concept, a mineral, a place or country, a property(性质) or a scientist. The names have to be unique and maintain “historical and chemical consistency”. This means a lot of “-iums”.
“They’re Latinising the name,” explains chemist Andrea Sella. “The most recent tradition is to name them after places or people.” The places chosen tend to be where the element was discovered or first produced.
No one has yet named an element after themselves but many elements are named in honour of important scientists. Albert Einstein was given einsteinium. This can also be a way of righting the wrongs of the past. “Lise Meitner was really the chemist who spotted nuclear fission(核裂变)but she was never really recognised for it because she was Jewish and a woman, ” says Sella. “Giving an element a name that reminds us of her is greatly important. ”
The naming process isn’t quick. The scientists who discovered them will start things off by suggesting a name. But it will be down to the International Union of Pure and Applied Chemistry (IUPAC) to approve it. A special division of the US-based group has to accept the suggestion. Then there is a public review period of five months before the IUPAC gets the final approval. Once it’s ready, the name is announced in the scientific journal Pure and Applied Chemistry.
Naming an element is not just about functionality. Names are always important.
1.What is the function of Paragraph 1?
A. To introduce the topic.
B. To present a finding.
C. To point out a problem.
D. To call for a decision,
2.Why was Lise Meitner mentioned in the naming process in Paragraph 4?
A. To praise her.
B. To build her reputation.
C. To correct the wrongs of the past.
D. To end racial discrimination
3.Who has the final say in the naming process of an element?
A. The scientist who discovered them.
B. The special division of US-based group.
C. The scientific journal Pure and Applied Chemistry,
D. The International Union of Pure and Applied Chemistry.
4.What i$ the passage mainly about?
A. How elements get their names.
B. Why science textbooks are out of date.
C. How new elements are discovered.
D. How functional naming an element is.
科目：高中英语 来源：甘肃省2016-2017学年高二（特长班）上学期期末考试英语试卷 题型：书面表达
假设你是李华，曾在美国学习半年，现已回国。你想联系你的美国老师Mr. Smith 但没有其联系方式。请根据以下要点给你的美国同学Tom写一封信：
1．感谢Tom对你英语学习的帮助；
2．询问Mr.smith的近况并索要其联系方式；
3．邀请Tom在春节期间来中国感受中国文化。
注意：1.词数120-150；2. 可适当增加细节。
___________________________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
_______________________________________________________________________
查看答案和解析>>
科目：高中英语 来源：江苏省牛津译林版英语Module 5 Unit 2 test2 题型：单项填空
It is my ______to check that all doors and windows are locked after everybody leaves .
A. doubt B. poster
C. responsibility D. evidence
查看答案和解析>>
科目：高中英语 来源：福建省宁德市2016-2017学年高一下学期期中联合考试英语试卷 题型：单项填空
I a mistake on the front cover and then I corrected it.
A. avoided B. forgave
C. earned D. spotted
查看答案和解析>>
科目：高中英语 来源：湖北省2017届高三5月押题考试英语试卷 题型：短文改错
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处 语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的间用斜线（\）划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
I took the Harvard Summer School program in my vacation. During my stay there, I spend a lot of time studying in the main library Widener. I enjoyed myself in the ocean of knowledges, either doing research for my papers or read special edition books. The library, which it is named after its donor Harry Widener, stands right next to the Emerson building of philosophy. Opening a pair of heavy yet elegant metal doors, I was immediate bathed in warm light. I wandered around the library, fascinating to find one treasure after other.
The library is a amazing place. One can fully experience the academic atmosphere only he visits the library. For me, the library as well as the courses explain Harvard’s place as the home of devoted scholars.
查看答案和解析>>
科目：高中英语 来源：宁夏银川三沙源上游学校2016-2017学年高一第一学期期中检测英语试卷 题型：完成句子
1.I am only able to look at nature through dirty c___________ hanging before very dusty windows.
2.People from England made ___________ (航海) to conquer other parts of the world.
3.___________ (事实上) all languages change and develop when cultures meet and communicate with each other.
4.The latter gave a separate___________ (身份) to American English spelling.
5.She gave me a d___________ look — the kind that said she would not change her mind.
6.After g___________ from college, we finally got the chance to take a bike trip.
7.She insisted that she ___________(组织)the trip properly.
8.While walking the dog, you were careless and it got l___________ and was hit by a car.
9.I wonder if it’s because I haven’t been able to be o___________ for so long that I’ve grown so crazy about everything to do with nature.
10.Two years ago she bought an expensive mountain bike and then she _____________ (说服)me to buy one.
查看答案和解析>>
科目：高中英语 来源：宁夏银川三沙源上游学校2016-2017学年高一第一学期期中检测英语试卷 题型：阅读理解
One of the most important things in the world is friendship. In order to have friends, you have to be a friend. But how can you be a good friend at school?
Listen — Listen when they are talking. Don’t say anything unless they ask you a question. Sometimes it’s not necessary for you to have anything to say; they just need someone to talk to about their feelings.
Help them — If your friend is ever in need of something, be there to help them. You should try to put them first, but make sure you don’t do everything they want you to do. Try to take an extra (额外的) pencil or pen with you to classes in case (以防) they forget one. Have a little extra money in your pocket in case they forget something they need.
Be there for them — Try to make something for your friend to help make them feel better in hard times. Making cards and encouraging them are among the nicest things you can do for a friend. Marilyn Monroe, a famous U.S. actor, once said, “I often make mistakes. Sometimes I am out of control. But if you can’t stay with me at my worst, you are sure not to deserve (值得) to be with me at my best.” Always remember this! If you don’t want to stay with your friends when they’re in hard times, then you don’t deserve to be with them when they’re having a good time!
______ — Try to make plans with your friends. Go shopping, go for ice cream, have a party, go to a movie and so on. Take time to know each other even better by doing something you both enjoy. By planning things together, you both can have a good time. And you’ll remember these things when you’re all old!
1.While your friend is talking to you about his or her feelings, you should _____.
A. give him or her some advice B. just listen unless asked
C. calm him or her down D. share your feelings as well
2.When we provide help for our friends, we should _____.
A. try to do everything for them B. put them before ourselves
C. change their bad habits first D. ignore their faults
3.What can we learn from Marilyn Monroe’s words?
A. Life without a friend is death. B. A friend is easier lost than found.
C. A friend in need is a friend indeed. D. A man is known by his friends.
4.What is the passage mainly about?
A. How to find a good friend. B. How to help friends in trouble.
C. How to be a good friend. D. How to make more friends.
查看答案和解析>>
科目：高中英语 来源：福建省莆田市2016-2017学年高二下学期期末考试英语试卷 题型：阅读理解
Green is an important color in nature. It is the color of grass and the leaves on trees. It is also the color of most growing plants.
Sometimes, the word green means young, fresh and growing. Sometimes, it describes something that is not yet ripe or finished. For example, a greenhorn is someone who has no experience, who is new to a situation. In the fifteenth century, a greenhorn was a young cow or ox whose horns(角) had not yet developed. A century later, a greenhorn was a soldier who had not yet had any experience in battle. By the eighteenth century, a greenhorn had the meaning it has today—a person who is new in a job.
Someone who has the ability to grow plants well is said to have a green thumb. The expression comes from early nineteen hundreds. A person with a green thumb seems to have a magic touch that makes plants grow quickly and well. You might say that the woman next door has a green thumb if her garden continues to grow long after your plants have died. 
The Green Revolution is the name given some years ago to the development of new kinds of rice and other grains. The new plants produced much larger crops. The Green Revolution was the result of hard work by agricultural scientists who had green thumbs.
Green is also the color used to describe the powerful feeling, jealousy(嫉妒). The green-eyed monster is not a frightening creature from outer space. It is an expression used about four hundred years ago by British writer William Shakespeare in his play “Othello”. It describes the unpleasant feeling a person has when someone has something he wants. A young man may suffer from the green-eyed monster if his girlfriend begins going out with someone else. Or, that green-eyed monster may affect your friend if you get a pay rise and he does not.
1.A greenhorn now refers to ____.
A. a cow without horns B. a new solider
C. a young horse D. a person who is new in a job
2.A person who has a green thumb is a person ____.
A. whose garden is greener than others’
B. whose thumbs are of green color
C. who is good at growing plants
D. who is younger than his neighbors
3.The author is actually talking about ____.
A. language B. colors
C. politics D. agriculture
4.Which of the following statements is NOT true according to the passage?
A. In about the 16th century, a greenhorn meant an experienced soldier.
B. The Green Revolution may have some connection with green thumbs.
C. The green-eyed monster was probably created by William Shakespeare.
D. The green-eyed monster can be used to describe a person who is jealous.
查看答案和解析>>
科目：高中英语 来源：黑龙江省肇东市2016-2017学年高一下学期期中考试英语试卷 题型：短文改错
文中共有10处语言错误，请在有错误的地方增加、删除或修改某个单词。每处错误及其修改均仅限一词；只允许修改10处，多者（从11处起）不计分。
I visited my aunt in a countryside near the city last week. I was surprised to see that great changes had been taken place in the countryside. Take my aunt's family for example. They supply preciously trees and flowers to the stores in the cities and have over ten workers working for themselves. Their family's income reached as much 100,000 yuan last year. Not only did they have a house, a car and computers, they can also afford a trip abroad every year. When asking what else they needed most, they said that they wanted to learn a few English so that they could do business with foreigners directly. To their delighted, my cousin can use he has learned from university to help them with overseas trade.
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
