1 . Dogs are considered by many to be man’s best friend and with millions of dogs owned by families in the US, it is highly likely that many dogs are in need of some amount of training. Since dogs can hear sounds at much higher frequencies (频率) than humans, there is a wonderful tool for the training of a dog. It is an app (应用程序) called the Dog Whistle. This isn’t your typical whistle in that it produces sounds at a frequency that is unable to be heard by humans. This unique app will allow you to train your dog without the need of a dog whistle.
The Dog Whistle free app was created by an app developer Maoli Wang specifically for dog owners who are looking for a way to communicate with their dogs in order to be able to either train them or alert (使警觉) them when the noise around is too great for them to hear you call them. By simply fixing the app on your iPhone, it will immediately turn itself into a dog whistle.
The app includes a very powerful system that is able to create different tones ranging from 16,000 to 40,000 Hz in order for a dog to be able to hear it. The app also has an on-screen sound meter in order for the user to monitor the sound level being produced. In that way, they can decide on which frequency works best for their dog. What’s more, the app easily produces the requested tones at the frequencies necessary to be used to communicate with your dog by simply tapping the screen of your phone.
The app was designed to be used in place of a dog whistle in order to get your dogs attention when it is too noisy around them. The sound produced through the app is at a level that only dogs are able to hear and they will respond to the sound. If you own a dog and are having behavioral issues with them, you would surely benefit from the Dog Whistle free app available by clicking here.
1. What is the development of the app based on according to the first paragraph?| A．Dogs’ good hearing. | B．People’s love for dogs. |
| C．The use of smart phones. | D．Dog owner’s interest in training. |
| A．It records the ways the dog responds to sounds. |
| B．It produces beautiful sounds that interest the dog. |
| C．It produces whistles at a frequency intended for the dog. |
| D．It suggests a proper way to communicate with the dog. |
| A．In a strange situation. | B．In a noisy situation. |
| C．In an unsafe situation. | D．In a difficult situation. |
| A．magazine | B．newspaper | C．website | D．radio |
2 . Whenever something looks interesting or beautiful, there is a natural desire of us to capture (捕捉) and preserve it — which means, in this day and age, that we are likely to reach for our phones to take a picture.
Though this would seem to be an ideal solution, there are two big problems associated with taking pictures. Firstly, we are likely to be so busy taking pictures that we forget to look at the world whose beauty and interest encourage us to take a photograph in the first place. And secondly, because we feel the pictures are safely stored on our phones, we never get around to looking at them, so sure are we that we’ll get around to them one day.
The first person to notice the problems was the English art critic (评论家), John Ruskin. He was a keen traveler who realized that most tourists make a poor job of noticing or remembering the beautiful things they see. He argued that humans have a natural tendency to respond to beauty and desire to have it, but there are better and worse expressions of this desire. At worse, we get into buying souvenirs or taking photographs. But, in Ruskin’s eyes, there’s just one thing we should do — attempting to draw the interesting things we see, regardless of whether we happen to have any talent for doing so.
Ruskin said, “Drawing can teach us to see: to notice properly rather than gaze absent-mindedly. In the process of recreating with our own hand what lies before our eyes, we naturally move from a position of observing beauty in a loose way to one where we acquire a deep understanding of its parts.”
Ruskin deplored the blindness and hurry of modern tourists, especially those who prided themselves on travelling around the whole Europe in a week by train, “No changing of places at a hundred miles an hour will make us stronger, happier, or wiser. There was always more in the world than men could see, if they ever walked slowly; they will see it no better for going fast. The really precious things are thoughts and sights, not pace.”
1. According to Paragraph 2, when taking pictures, people tend to ___________.| A．forget to appreciate something attractive on the spot |
| B．find it hard to learn skills of taking good pictures |
| C．find a good way to keep things in their minds |
| D．have a chance to meet the challenge of new technology |
| A．To speak it out openly. | B．To photograph it instantly. |
| C．To purchase it directly. | D．To paint it immediately. |
| A．considerate and determined | B．active and adventurous |
| C．creative and thoughtful | D．sensitive and ambitious |
| A．appreciated | B．criticized |
| C．favored | D．ignored |
