修改时间：2024-07-31 浏览次数：284 类型：月考试卷
Washington, D.C. Bicycle Tours
Cherry Blossom Bike Tour in Washington, D.C.
Duration Tour
This small group bike tour is a fantastic way to see a world-famous cherry trees with beautiful flowers of Washington, D.C. Your guide will provide a history lesson about the trees and the famous monuments where they blossom. Reserve your spot before availability — the cherry blossoms—disappear!
Washington Capital Monuments Bicycle Tour
Duration: 3 hours (4 miles)
Join a guided bike tour and view some of the most popular monuments in Washington, D.C. Explore the monuments and memorials on the National Mall as your guide shares unique facts and history at each stop. Guided tour includes bike, helmet, cookies and bottled water.
Capital City Bike Tour in Washington, D.C.
Duration: 3 hours
Morning or Afternoon, this bike tour is the perfect tour for D.C. newcomers and locals looking to experience Washington, D.C.in a healthy way with minimum effort. Knowledgeable guides will entertain you with the most, interesting stories about Presidents, Congress, memorials, and parks. Comfortable bikes and a smooth tour route(路线)make cycling between the sites fun and relaxing.
Washington Capital Sites at Night Bicycle Tour
Duration: 3 hours(7miles)
Join a small group bike tour for an evening of exploration in the heart of Washington, D.C. Get up close to the monuments and memorials as you bike the sites of Capitol Hill and the National Mall. Frequent stops are made for photo taking as your guide offers unique facts and history. Tour includes bike, helmet, and bottled water. All riders are equipped with reflective vests and safety lights.
Are you familiar with the greeting, "Can I add you on WeChat?" It seems like every time we meet new friends or colleagues nowadays, the first thing that springs to mind is adding each other on the app. Nevertheless, more than 80 percent of WeChat users report feeling stressed or anxious when they receive a large number of messages, according to a study done recently by the app's developer Tencent(腾讯). In other words, WeChat can overwhelm(使应接不暇) us, while also breaking down the boundaries between our work and private lives.
Just think how easy it is now for bosses to hand out assignments during the holiday, so long as they have your WeChat contact. When you're at the cinema enjoying a romantic movie or having a barbecue in the backyard, you can never cut yourself off from the outside world unless you switch off your phone. Not to post something in WeChat Moments before replying to your boss first!
Apart from interrupting your leisure time, WeChat can also reduce your productivity at work. For many office workers, logging in to WeChat on their computers at the start of the day has become routine. But what if browsing the Moments distracts us from doing the work? The app steals our time without us even noticing it, making us have the false belief that we are busy all the time.
And as if that weren't bad enough, there're the "one-off" friends who take up space on our WeChat friend list. A handy way to check how many one-off friends you have is to take a look at your chat history with them. Sometimes, you only sent the initial friend requests so you could invite them to a WeChat group or inform them of something for your boss. Yet still, as your friend count(好友数量) ever goes up, it can make you feel the need to post selfies(自拍) and share details of your life in your Moments, just so you can stay up to date.
With WeChat, all our spare time is swallowed up by the constant torrent of messages and our attention keeps getting diverted by Moments and pop-up ads. So it's time that we should do something to nip this problem in the bud.
As Internet users become more dependent on the Internet to store information, are people remember less？If you know your computer will save information, why store it in your own personal memory, your brain？Experts are wondering if the Internet is changing what we remember and how.
In a recent study, Professor Betsy Sparrow conducted some experiments. She and her research team wanted to know the Internet is changing memory. In the first experiment, they gave people 40 unimportant facts to type into a computer. The first group of people understood that the computer would save the information. The second group understood that the computer would not save it. Later, the second group remembered the information better. People in the first group knew they could find the information again, so they did not try to remember it.
In another experiment, the researchers gave people facts to remember, and told them where to find the information on the Internet. The information was in a specific computer folder(文件夹). Surprisingly, people later remember the folder location better than the facts. When people use the Internet, they do not remember the information. Rather, they remember how to find it. This is called "transactive memory (交互记忆)".
According to Sparrow, we are not becoming people with poor memories as a result of the Internet. Instead, computer users are developing stronger transactive memories; that is, people are learning how to organize huge quantities of information so that they are able to access it at a later date. This doesn't mean we are becoming either more or less intelligent, but there is no doubt that the way we use memory is changing.
Bike sharing have become popular words in cities from Cape Town to Shanghai to Melbourne. Planners, politicians and media keep showing off their benefits: reducing pollution, congestion, travel costs and oil dependence, while improving public health. Bike sharing also helps make cities appear modern, dynamic and worldwide--qualities much sought after by the creative class.
But what makes for a successful public bike-sharing program? This is an important question because installing one requires significant public and private investment and adjustment to the built environment.
While many programs have been launched among much praise, often their popularity has soon declined. Many end up operating at a financial loss and depend on other profitable enterprises to cross-subsidize (交叉补贴) them. Some have resulted in thrown-away bikes becoming an eyesore.
Understanding which factors enhance or stop public bike sharing is critical in helping cities decide whether such a program is workable, before considering what design and sitting will work best.
Drawing on current knowledge, we discuss the importance of the local landscape, climate, cycling infrastructure (基础设施) and land use. We also touch on other factors, such as the legal environment and the characteristics of the bike-sharing program itself.
Take natural environment for example. Two natural environment factors are known to affect participation: hilliness and weather. Hilliness discourages balanced bike-sharing use, as users avoid returning bicycles to stations on hilltops. Those stations end up being empty, while stations on flat areas are often full, so users cannot find a station to return their bikes.
As for weather, ideal temperature ranges vary by the climate zone. Case studies show warm and dry weather encourages public bike-sharing use. Rain and strong wind reduce the frequency of trips. However, some approaches, such as providing sheltered, shaded, or even heated or cooled cycling infrastructure, could prove useful.
Many scientists believe our love of sugar may actually an addiction. When we eat or drink sugary foods, the sugar enters our blood and affects parts of our brain that make us feel good. Then the good feeling goes away, leaving us wanting more. In this way, it is in fact an addictive drug, one that doctors recommend we all cut down on.
"It seems like every time I study an illness and trace a path to the first cause, I find my way back to sugar," says scientist Richard Johnson. Why? "Sugar, we believe, is one of the culprits, if not the major culprit," says Johnson,
Early humans often had very little food, so our bodies learned to be very efficient in storing sugar as fat. In this way, we had energy stored for when there was no food. But today, most people have more than enough. So the very thing that once saved us may now be killing us.
So what is the solution? The trouble is, in today's world, it's extremely difficult to avoid. From breakfast cereals to after-dinner desserts, our foods are increasingly filled with it. Some manufacturers even use sugar to replace taste in foods that are advertised as low in fat.
But there are those who are fighting back against sugar. Many schools are replacing sugary desserts with healthier options like fruit. Other schools are growing their own food in gardens, or building facilities like walking tracks so students and others in the community can exercise.
A. All tasty foods do this, but sugar has a particularly strong effect.
B. So many people have a sweet tooth.
C. One-third of adults worldwide have high blood pressure, and up to 347 million have diabetes.
D. The battle has not yet been lost.
E. But the temptation seems hard to resist.
F. Our bodies are designed to survive on very little sugar.
G. It's obvious that we need to eat less sugar.
It happened to Susan Black in a cold winter. Everything seemed in a 1 those days. Both her parents suffering from depression(抑郁症), sending for a 2 became a common practice. As a woman in her 40s, it was a 3 job to be a teacher of 30 first-graders, who were always 4, and she'd tried all sorts of methods, but 5 to get them quiet in class...
Misfortunes were 6 one after another. After a long and tiring day at work, Susan dragged herself along, 7 towards the parking lot. She came to the car, only to find she had locked her keys and cell phone inside. 8kicking the tyre of the car, she sensed tears 9 her cheeks.
"What's wrong?" a voice was heard. Susan looked up, and saw a young man with a 10 at his side. Susan stopped weeping and explained her situation, adding that 11 he called her husband, he wouldn't bring her the spare car key, since he was working at the 12 end of the town and it was still not time to 13 the day's work. "Call your 14 and tell him I'm coming to get the key," the young man handed Susan his phone. "But that's nine miles' round trip..." said Susan. "There's no time for 15. I'll be back as soon as possible."
Two hours later, the motor rider returned with a big smile and 16 face, key in hand. Susan 17 some money, but he refused. "Let's just say I needed the 18," with those words, like a 19 in the movies, he rode off into the sunset.
For Susan, the "cowboy" not only picked the key, but 20 her day, or rather, warmed the long and cold winter days.
According to Chinese speaking practice, lion is a special animal to Chinese people. A pair of stone lions, a male a female, are (common) seen in front of the gates of traditional building.
The lion (regard) as the king in the animal world, so (it) images represent power and prestige. The stone lions are also used to indicate the ranks of officials.
It is interesting to note that China had no lions originally. The earliest stone lions were sculpted the beginning of the Eastern Han Dynasty from A. D. 25 to 220 with introduction of Buddhism(佛教) into ancient China. In the Buddhist faith, the lion, can protect the truth and keep off evils, is considered a divine animal of nobleness and dignity. In Chinese folk tales, the lion has become a symbol of (brave), power and good luck.
It was also popular to decorate bridges with stone sculpted lions for the defending reason. The (well) known of bridges is the Lugouqiao, (build )from 1189 to 1192.
增加：在缺词处加一个漏字符（Λ），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：在错误的词下画一横线，并在该词下面写出修改后的词。
注意：⒈每处错误及其修改均仅限一个词；
⒉只允许修改10处错误，多者（从第11处起）不计分。
Yesterday we took part in a tree planting activity organizing by our class. Early on the morning, we set out for Baotou Reservoir in Xiamen. When we arrived there, we began to work immediately. Firstly, we dug holes what were slightly larger than the root balls. Next, we gentle placed the trees into their new homes. After that, we refilled the holes using enough soil to support the tree roots. Finally, we water the trees. Three hour passed by before we knew them. Tired as we were, we felt excited, talking or laughing all the way home. What unforgettable experience.
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