Question

in 2007, computer scientist luis von ahn was working on converting printed books into a digital format. he found that some words were distorted enough that digital scanners couldnt recognize them, but most humans could easily read them. based on that finding, von ahn invented a simple security test to keep automated \bots\ out of websites. the first version of the recaptcha test asked users to type one known word and one of the many words scanners couldnt read. if the answers proved the users were humans and added data to the book - digitizing project. which choice best states the main purpose of the text? a) to discuss von ahns invention of recaptcha b) to explain how digital scanners work c) to call attention to von ahns book - digitizing project d) to indicate how popular recaptcha is the following text is from edith whartons 1905 novel the house of mirth. lily bart and a companion are walking through a park. lily had no real intimacy with nature, but she had a passion for the appropriate and could be keenly sensitive to a scene which was the fitting background of her own sensations. the landscape outspread below her seemed an enlargement of her present mood, and she found something of herself in its calmness, its breadth, its long free reaches. on the nearer slopes the sugar - maples wavered like pyres of light; lower down was a massing of grey orchards, and here and there the lingering green of an oak - grove. which choice best describes the function of the underlined sentence in the text as a whole? a) it creates a detailed image of the physical setting of the scene. b) it establishes that a character is experiencing an internal conflict. c) it makes an assertion that the next sentence then expands on. d) it illustrates an idea that is introduced in the previous sentence.

Explanation:

Para la primera pregunta, el texto se centra en la invención de reCAPTCHA por von Ahn mientras trabajaba en el proyecto de digitalización de libros. Las otras opciones no son el objetivo principal. Para la segunda pregunta, la oración subrayada presenta una idea y la siguiente oración la expande al describir más detalles del paisaje.

Answer:

1. A) To discuss von Ahn’s invention of reCAPTCHA
2. C) It makes an assertion that the next sentence then expands on.