Have you ever seen a teenager or an adult riding a small bike? Perhaps it had posts sticking out from both sides of the wheels. 1.
BMX(自行车越野) bikes have a lightweight frame and smaller wheels than other bikes. 2. The sport of BMX began when kids wanted to copy off-speed motorcycle race that were very popular. Today it is a sport with multiple disciplines.
3. It is an exciting, fast-paced event with off-road tracks, jumps and bends. Up to eight riders race at a time. BMX street riding takes BMX off the competitive stage, and into the city for some fun. The goal is to do as many creative tricks as possible in the environment. BMX park riding originated when people started using skate parks, empty pools or parking lots, discovering new ways to ride. Later, the style was recognized as a sport and parks were created specially for riders to practise in. Lastly, BMX flatland riding differs from all the rest. Flatland uses nothing but a flat surface where the rider balances and does dance-like tricks on the bike. 4. The posts are called pegs and they enable the rider to do more tricks. They can stand on them in flatland BMX or use them to grind(摩擦)or stall in other styles of BMX.
5. But in reality, it is a sport over 65 years old. Contests such as the X Games and the Summer Olympics are putting BMX back in the spotlight.
A.where did the thrilling sport start?
B.BMX racing is the original form of BMX.
C.They are designed to be fast and user - friendly.
D.It is more than a sport with multiple disciplines.
E.Today BMX is known as a sport for the risk-takers.
F.What you saw was likely not a children's bike, but a BMX bike!
G.Riders of this style of BMX use posts sticking out of their bike wheels.
Guilt is one of the most painful emotions that humans experience but also one of the most common .Nobody enjoys feeling guilty, but this emotion serves an important purpose: it alerts (使警觉)a person when he or she has done something wrong. This enables the person to compensate and work to heal relationships that were damaged by their actions. It can also motivate people to avoid making similar mistakes later.
Nevertheless, guilt can be destructive if it is not dealt with in the right way. It can cause people to avoid others because they are too embarrassed to apologize for their actions or inaction. Some try to avoid the pain of guilt by turning to other worse habits. Others try to cover up their guilt by blaming others or becoming angry.
What makes it more complicated is that sometimes people feel guilty about things that happen out of their control. One example of this is survivors’ guilt. People who survive a disaster feel guilty because they escaped death when others didn’t. Otherwise, some people may experience false guilt because of excessively high expectations for themselves that they cannot live up to.
The proper response to guilt depends on what kind of guilt you’re dealing with. For false guilt, it’s important to recognize that the guilt does not reflect an actual ethical (道德的)failure. For example, some false guilt focuses on failing to meet expectations you had for yourself. In this case, it’s important to remind yourself that you have limits. No one is perfect, and no one can do everything, so admitting your limits in actually a sign of humility(谦虚).
It’s possible that you feel guilty because you actually did something wrong-or didn’t do something you should have. If so, don’t try to hide it. Apologize and ask for forgiveness. Learn from your mistakes, and try to avoid committing the same acts again. Making up with the person you hurt should make your guilty feelings fade.
Guilt is painful, but it can serve a good purpose if you use it well.
1.What is the function of feeling guilty according to Paragraph 1?
A.It can prevent people from making mistakes.
B.It can perfect the damaged relationship.
C.It can warn people of their mistakes.
D.It can make people refreshed.
2.Why do some people experience false guilt?
A.The situation was beyond their reach. B.They want to prove their kindness.
C.They can’t face up to a disaster. D.They are ethical failures.
3.When you do something wrong, you should .
A.remind yourself that no one is perfect B.cover up your guilt in your mind
C.make your guilty feeling fade naturally D.admit your mistake and make up for
4.What’s the best title for the text?
A.A Common Painful Emotion B.The Positive Use of Guilt
C.Different Kinds of Guilt D.How to Deal with False Guilt
If we planted a lot more trees in just the right places, they could reduce the amount of carbon in the atmosphere to levels not seen since the 1920s, said study leader Jean Francois Bastin, an ecologist from the Swiss Federal Institute of Technology. After examining more than 70,000 high-quality satellite photos of trees from all over the planet, ecologists concluded that the earth could support 900 million additional hectares (公顷) of tree cover.
Bastin and his colleagues developed a computer program that estimates how much forested land could be restored both now and in a future warmer world. The team members combed through 78,774 satellite photos of a variety of ecosystems- everywhere from the thick Amazon rainforest to the dry Sahel in Africa-that had been protected from human influence. They counted every tree in every photo to assess the current tree coverage in natural environments. The researchers combined that information with data about the climate, temperature and soil conditions for each ecosystem. Then they taught their program to put it all together to determine how much tree coverage a particular area could support.
The result shows trees currently cover 2.8 billion hectares of land- but they have the potential to populate as much as 4.4 billion hectares. Right now, much of the additional 1.6 billion hectares is being used for agriculture or urban spaces. The researchers took those areas off the table and saw that the earth still has 900 million hectares ready and waiting to be restored with trees an area roughly the size of Brazil. When those trees mature, they could remove 205 gigatonnes (兆吨) of carbon from the atmosphere, the study calculated, That represents about two-thirds of the roughly 300 gigatonnes of atmospheric carbon that can be traced to human actions, they said.
Even if trees are planted in the most mindful way, other actions are still needed to fight climate change, Bastin said.
1.Why did Bastin develop a computer program?
A.To reduce air pollution in Africa.
B.To determine carbon dioxide in the air.
C.To assess the potential forested land.
D.To calculate the area of forest in the world.
2.What does the underlined phrase “combed through” in Paragraph 2 refer to?
A.Looked into. B.Put away.
C.Brought back. D.Took in.
3.What can we infer from what Basin said in the last paragraph?
A.Brazil has large areas to plant trees.
B.The tree cover is not enough to control greenhouse gases.
C.Trees removed two-thirds of carbon in the atmosphere.
D.Other actions are equally important compared to planting trees.
4.What is the author’s attitude towards the research result?
A.Disapproving. B.Doubtful.
C.Supportive. D.Objective.
Festivals are about fun in large helpings(一份食物), and science festivals should be no exception There should be plenty of it at the second Edinburgh Science Festival, which runs from 2 April to 16 April, But there really does seem to be something to cater for all tastes in the impressive listing of more than 300 events.
For starters, what about a tour of tropical crops in the Botanical Gardens- tastes and smells included? You can follow that up with a course of lectures and tastings of Italian food and wine given by the finest Italian delicatessen(熟食) in the country. No trip to Scotland would be complete without a trip to a distillery(酿酒厂) to see how the" water of life" is made.
Besides food and drink "practicals", you can try something in the medicine section.There are also plenty of events designed for kids, such as the Discovery Dome and the "hands on"science tent. OK,you might say, but where is the high-tech physics, the computer science and the space technology? Well, it is all in Edinburgh, but room is unavailable here to list the entire programme: including the daily diary and A map of venues. It covers 20 pages! There is also a host of specialist conferences on a range of topics including statistics, computing and urban planning. The idea seems to be to make Edinburgh a focus of science at all levels during the festival.
The programme of the festival is well arranged and subdivided, making it easy to pick out interesting events to suit your tastes, whatever they may be. Venues and the target audience (children, adults or specialists)are all clearly coded and the maps posted along the road should make it easy to get around.
1.What do we know about the second Edinburgh Science Festival?
A.It lasts for 14 days. B.It includes 300 events.
C.It has much fun about food. D.It is the largest festival in Edinburgh.
2.What does the author strongly recommend for a trip to Scotland?
A.Tasting the delicious local food. B.Visiting the famous Botanical Gardens.
C.visiting a factory where the wine is made. D.Seeing how the drinking water is made.
3.Why can't we find information about the entire high-tech programme?
A.The information is too much to list
B.There are more important events.
C.The visitors are not interested in it.
D.The information concerned has appeared in the poster.
4.What does the last paragraph mainly tell us?
A.The events suit all the tastes.
B.It is convenient for tourists to visit the festival.
C.Tourists have to buy a map for the festival.
D.The target audience are restricted to certain events.
4 Study and Homework Apps for Android!
Brainly
Price：Free/$15 per 3 months/$24 per year
Brainly is a social network for learners. You sign up, ask questions, and get answers (usually).Additionally, you can browse the site, answer other people's questions, and help them out as well. There They charge on a quarter basis ($15)or a yearly basis($24).
Forest
Price: Free/Up to $1.99
Forest is a different type of app. One of the biggest distractions during study is your smartphone.Forest helps put a stop to that. You open the app and a tree grows, The tree dies if you leave the app.Thus, there is a little motivation to leave the thing alone while you study or do homework.
Google Play Books
Price: Free app, book costs vary
Google Play Books is an excellent source of learning material. Sometimes your textbook just isn't enough and apps like this have plenty of additional resources. Books cost money obviously. However, you only pay for them once. Books are available offline on your smartphone or tablet.
Quizlet
Price: Free/$19.99 per year
Quizlet is one of the most popular flashcard apps for language learning. You can create flashcards play memory games, and even share flashcards with classmates. It also supports 18 languages for about any subject or topic. The free version should work just fine for simple uses, though. The premium version costs $19.99 per year, which isn't expensive for a study aid.
1.What is special about Forest?
A.It helps keep you focused. B.It answers your questions.
C.It provides textbooks for your study. D.It motivates you to plant more trees.
2.Which app can you choose to learn languages?
A.Brainy. B.Forest.
C.Google Play Book. D.Quizlet.
3.What do these apps have in common?
A.They have no advertisements. B.They charge for some services.
C.They have enough learning resources. D.They are designed to do homework quickly.
假定你是李华，你的留学生朋友Tony报名参加了京剧社，请你用电子邮件通知他本周末的社团活动。内容包括：
1.表示欢迎；
2.活动地点和时间；
3.活动内容。
注意：1.词数100左右；
2.可以适当增加细节，以使行文连贯。
Dear Tony,
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
