More than 100 scientists from 25 countries have traveled to faraway places to collect wild crop seeds(种子) in an effort to help battle climate change.
The scientists, who have been compared to the heroes of the “Indiana Jones” movies, traveled on foot, four-wheeled vehicles(交通工具), boats, horses and even elephants to reach faraway areas. They faced extreme heat,dust, and danger from wild animals. At last, they collected 4, 644 seeds of 371 wild relatives of 28 world crops, many of which are said to be endangered.
The Crop Trust, an organization that works to save different kinds of crops, is directing the project. The group is working in partnership with Britain's Royal Botanic Gardens and Millennium Seed Bank. Additional financial support comes from Norway. The project is believed to be the largest organized international effort yet to collect and protect crops' wild relatives.Hannes Dempewolf is a scientist and the head at the Crop Trust. He said“What these seed collectors went through in the field resembles scenes from an Indiana Jones movie.”
Some crops are threatened because of destruction of forests, climate change and expanded cities. The newly-found wild seeds have developed so plants can grow in extreme temperatures, poor soils, and even in low rainfall areas.
A United Nations report says that food production is at risk because of a shortage of rain and other weather extremes connected to climate change. The U.N. Food and Agriculture Organization says that the number of plant species is quickly decreasing and people are depending on fewer species for food. Those wild seeds could be important in feeding a growing human population in some areas and offer a largely unused source of diversity(多样性) to crops.
1.What does the second paragraph show?
A.Collecting seeds is not an easy job.
B.The scientists’ story is made into a movie.
C.The wild seeds are in danger of extinction.
D.The scientists can choose from many vehicles.
2.What does the underlined word “resembles”in the third paragraph mean?
A.Depends on. B.Looks like.
C.Turns out. D.Refers to.
3.What is the advantage of the newly-found wild seeds?
A.They can increase green areas. B.They can provide more nutrients
C.They can survive bad conditions. D.They can improve existent crop seeds.
4.What is the meaning of the scientists collecting wild seeds?
A.Bringing more plant species to the world.
B.Helping farmers improve their farming skills.
C.Knowing about the worlds farming practices.
D.Helping battle climate change.
高一英语阅读选择中等难度题查看答案及解析
Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishing a long workout around the track.
But while it’s long been believed that endorphins (脑内啡) — chemicals in the body that cause happiness — are behind the so-called “runner’s high”, a study suggested that there may be more to this phenomenon than we previously knew.
According to a recent study published by a group of scientists from several German universities, a group of chemicals called endocannabinoids (内源性大麻素) may actually be responsible for this familiar great feeling.
To test this theory, the scientists turned to mice.
Both mice and humans release high levels of endorphins and endocannabinoids after exercise, along with many other chemicals. After exercising on running wheels, the mice seemed happy and relaxed and displayed no signs of anxiety.
But after being given a drug to block their endorphins the change. However, when their endocannabinoids were block with a different drug, their runner’s high symptoms seemed to fade.
“The long-held notion of endorphins being responsible for the runner's high is false. Endorphins are effective pain relievers, but only when it comes to the pain in your body and muscles you feel after working out,” Patrick Lucas Austin wrote on science blog Lifchacker.
Similar studies are yet to be carried out on humans, but it’s already well known that exercise is a highly effective way to get rid of stress or anxiety.
The UK’s National Health Service even prescribes (开药方) exercise to patients who are suffering from depression.
“Being depressed can leave you feeling low in energy, which might put you off being more active. Regular exercise can boost your mood if you have depression, and it’s especially useful for people with mild to moderate (中等的) depression,” it wrote on its website.
It seems like nothing can beat that feeling we get after a good workout, even if we don’t fully understand where it comes from. At least if we’re feeling down, we know that all we have to do is put on our running shoes.
1.What did scientists from German universities recently discover?
A.Working out is a highly effective way to treat depression.
B.The runner’s high could be caused by endocannabinoids.
C.Endorphins may contribute to one’s high spirits after running.
D.The level of endorphins and endocannabinoids could affect one’s mood.
2.The scientists gave mice drugs in their experiment to .
A.find what reduces the runner’s high symptoms
B.see the specific symptoms of the runner’s high
C.identify what is responsible for the runner’s high
D.test what influences the level of endocannabinoids released
3.The underlined word “notion” in Paragraph 7 has the closest meaning to .
A.effect B.goal
C.question D.belief
4.According to the UK’s National Health Service, regular workouts .
A.are the best way to treat depression
B.can help ease depression symptoms
C.only work for those with serious depression
D.can help people completely recover from depression
高一英语阅读选择中等难度题查看答案及解析
Kieron Graham has known from a young age that he was adopted. While he loves his adoptive family, he has always wondered about his birth mother and brother. When his adoptive mom gave him a DNA test tool, they both hoped it might lead to his birth family. But neither guessed it would work so quickly, or that when it did, Graham would learn he and his long-lost brother may have crossed paths every day.
It took just one week from the time Graham, a college student at Georgia's Kennesaw State University, received his DNA results on Ancestry.com for him to connect with his brother. Graham's DNA results showed that his closest match was a man named Vincent Ghant, and it turned out Ghant lived just a few minutes away.
Graham reached out and learned that the two were in fact long-lost brothers. Their mother, Shawn Ghant, made the difficult decision to place Kieron in adoptive care when he was just a baby. And she has worried and wondered about her youngest son ever since. Graham has since been reunited with his mother and both of his brothers on his mother's side.
“It’s all surreal(离奇的), too many emotions to describe exactly what I’m feeling about the entire situation, but it’s a good situation,” Graham tells MNN.
As fate would have it, Kieron and Vincent are both students at Kennesaw State. They even have the same major: political science. So it's a safe bet the two crossed paths many times over the past three years. And now, thanks to some DNA sleuthing(筛查), the two will cross paths many more times in the years to come.
“We’re getting together on Christmas with everyone, birth mother included,” Graham says. “That's sure to be a very indelible Christmas indeed, which will always be treasured by us.”
1.According to the passage, Graham ___________.
A.is quite familiar with his birth family
B.relied on a website to find his birth family
C.happens to be working in Ancestry.com
D.is studying engineering in the state university
2.What can we infer from the third paragraph?
A.It was hard for Shawn to place her son in adoptive care.
B.Graham has three adoptive brothers on his mother’s side.
C.It was too difficult for the whole family to get united.
D.Shawn Ghant loves her older sons more.
3.What does Graham probably think of his experience?
A.Unbelievable and exciting. B.Surprising but common.
C.Undoubted and inspiring. D.Moving but painful.
4.What does the underlined word “indelible” in the last paragraph mean?
A.Normal. B.Silent. C.Traditional. D.Unforgettable.
高一英语阅读选择中等难度题查看答案及解析
下面是某中学高一英语兴趣小组的一项活动:请同学们对 “良好的饮食习惯” 这一话题进行讨论。请根据下列提示,用英语写一篇发言稿。内容要点应包括:
部分同学的饮食习惯 | 良好的饮食习惯 | 个人看法 |
不吃早餐 爱吃零食和垃圾食品 偏食,饮食过量等等 | 三餐吃好 饮食多样化 饮食定时定量 | 良好的饮食习惯重要性: 有助于身体健康等等 |
注意:(1) 发言稿必须包括所有内容要点,可适当发挥;(2) 发言稿开头与结尾已为你写好,不计入总词数;(3) 词数:120词左右。
Dear friends,
As we all know, we are what we eat. Therefore, it’s very important for us to form healthy eating habits.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
That’s all. Thank you!
高一英语提纲类作文中等难度题查看答案及解析
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。短文中有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:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,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。
Dear Yang Hui,
I’ve heard you’ll have a two-weeks summer holiday and have decided to visit as much new places as possible. I don’t think it’s a good idea. My friend Li Hua goes to Europe last July. He visited four countries, and stayed for only three days in each of the country. He was always in hurry. Li Hua was neither on a train or a bus almost every day. When he returned back from Europe, he was very tiring. So I suggest that he travel to one country and visit only one city. Choose a city on the coast, or you’ll be able to have a good rest at the seaside.
Best wishes!
Yours,
Wang Feng
高一英语短文改错中等难度题查看答案及解析
Studies have shown that walking among trees makes us relaxed. 1.There’s plenty of research showing the link between being in nature and being happy, but most of the research has focused on adults.
2. Explaining the motivation behind the study, researchers note that with environmental issues such as global warming, more studies are focusing on the relationships between humans and nature to find solutions to these problems, and the future of the planet lies in the hands of children and their actions. However, few studies focus on this aspect.
For the study, researchers worked with 296 children between the ages of 9 and 12. To measure how connected they were to nature, the kids were asked how much they enjoy activities like seeing wildflowers and wild animals, hearing sounds of nature and touching animals and plants. 3.They also found that the more concerned children were about the environment and nature, the more likely they were to be happy.
So exposure to nature is related to active behaviors and happiness of children. What does that mean to adults? As we all know, children usually tend to follow adults’, especially their parents’ behaviors. That’s to say, when adults are outside and appreciate nature, kids learn by example. 4.
Researchers say that children need role models who can gently guide them to nature with excitement and an attitude of a lifelong learner. 5. What’s more important is that they spend time together with children by exploring a fun and safe environment.
A.It’s so good going for a walk around trees.
B.Even just smelling the trees helps reduce anxiety.
C.And if parents enjoy being close to nature, so will their children.
D.Parents don’t have to be experts in environmental science or nature studies.
E.They found that the kids connected to nature were more likely to behave actively.
F.In a new study researchers wanted to see if kids get the same benefits from being outdoors.
G.Researchers will study more about the connection between children’s happiness and nature.
高一英语七选五中等难度题查看答案及解析
你们班同学打算周六去爬香山。请给外教Chris写一封英文信,邀请他参加此次活动。具体内容如下:
1)时间:8am—5 pm;2)集合地点:校门口;交通工具:公交车;3)内容:吃午饭,欣赏风景,照相4)携带物品:雨具,午餐,相机。
注意:1.词数不少于50;2.可适当增加细节,以使行文连贯;3.开头和结尾已给出,不计入总词数。
高一英语提纲类作文中等难度题查看答案及解析
单句改错
1.He was bring up in New York.
2.It hit him that he had lost his key in the office.
3.The table is such heavy that I can’t move it.
4.Obvious,the students are not interested in the subject.
5.We are looking forward for seeing the film Wonder Woman.
6.It was last year when you taught me how to drive.
7.You can’t take photographs here without permit.
8.It is a strange thing that he could have done such a thing.
9.We will take chance to have the party outdoor.
10.Now you can do some exercise and have fun your kids at the same time.
高一英语单句改错中等难度题查看答案及解析
One day we had a math test. I took a look at the _______ full of what looked like hieroglyphs(象形文字) to me and began to _______ I did the best that I could, and then left my _______ to put my paper on the front desk with a(n) _______.
After I returned to my seat, an idea came to my mind. I _______ the teacher was walking in the _______ of the room with her back turned. I _______ my seat and went back to the pile of test papers already handed _______ I quickly picked up my paper, _______ the paper right below it. When I looked at the ________ paper I had taken, I discovered it belonged to the ________ girl in our class. I quickly copied her answers.
The next day the teacher handed back our papers with them face down. When I ________ my paper over, I was ________ to see an “F” on it. After class I went to the girl whose answers I had ________, “The math test was difficult. I ________ it. I guess we need to study more.” ________ reply was, “Not me, I got every question ________ and got an A.”
The teacher knew. She never blamed me in front of the class ________ allowed me to keep my dignity(尊严). I made a ________ to myself never ever to cheat again and always be ________. I never forgot that teacher who failed me when, really, I had failed myself.
1.A.blackboard B.paper C.book D.picture
2.A.argue B.cry C.worry D.complain
3.A.seat B.classroom C.partner D.teacher
4.A.joy B.idea C.sigh D.problem
5.A.believed B.found C.ignored D.checked
6.A.front B.middle C.outside D.back
7.A.preserved B.found C.left D.took
8.A.out B.in C.over D.on
9.A.copying B.leaving C.remembering D.including
10.A.extra B.new C.clean D.difficult
11.A.tallest B.oldest C.prettiest D.smartest
12.A.got B.turned C.put D.took
13.A.shocked B.angry C.happy D.excited
14.A.examined B.read C.marked D.copied
15.A.knew B.made C.failed D.lost
16.A.Her B.My C.His D.Its
17.A.ready B.good C.right D.done
18.A.or B.except C.but D.unless
19.A.speech B.joke C.wish D.promise
20.A.honest B.friendly C.careful D.hopeful
高一英语完形填空中等难度题查看答案及解析
How to conduct a group discussion
In life, there are times when you’ll be working in a group. If you’re reading this, then probably you’re a group leader and you’ll conduct (主持) a group discussion. Don’t worry.1. Here are the steps in conducting a group discussion.
● At the start of the discussion, present the problem to the group. You must think of the problem before the discussion.2. The problem can be something that prevents a group achieving its goal, or something that asks “how”. Once you have recognized the problem, discuss it with the group and find out solutions to it.
● Once the group understands the problem, it’s time to ask for ideas. As a leader, you should give everyone in the group a chance to share his/her idea.3. Some ideas may be out of this world but it can help the group to make a decision.
● When someone in the group finishes sharing an idea, write it down on a white board.4. It’s not only important for remembering that idea, but it also shows that you value his/her opinion.
●5.In this important stage, you must ask the group to vote for a particular idea and go with it. The idea with the most votes shall be the solution to the problem. But if you feel that it isn’t the solution, think about it carefully and discuss it with the group.
A.Pick out the best idea.
B.Conclude the discussion.
C.Always keep in mind that the majority isn’t always right.
D.You should listen carefully to their words no matter what they say.
E.Handling a group discussion is easy if you know what to do.
F.However,if you didn’t think about it,you can consult the group.
G.Do this for everyone in the group until they all share their ideas
高一英语七选五中等难度题查看答案及解析