Curious about which digital camera is best for you? Where you can hear reggae music in Toronto? Or what the distance is to Mars? Question-and-answer sites offer an alternative to the ubiquitous search engine: a place to post a question – and then wait for another Internet user to respond.
The idea isn’t new: Usenet newsgroups have let us do this for years. But Q&A sites offer features that enhance and simplify the process. All offer eBay-like feedback, where users rate the helpfulness of experts: over time, these scores become a benchmark score for determining how trustworthy someone’s answers are. Question-and-answer sites also e-mail you when an expert has responded, and they offer personalized page where you can see the questions you’ve asked, the people who have responded, and what they’ve had to say.
The main idea of this passage is that .......................
Suy nghĩ và trả lời câu hỏi trước khi xem đáp án
Lời giải:
Báo saikiến thức: reading
Câu hỏi: Ý tưởng chính của đoạn văn này là
Question-and-answer sites also e-mail you when an expert has responded, and they offer personalized page where you can see the questions you’ve asked, the people who have responded, and what they’ve had to say......
Các trang web hỏi và trả lời thay thế cho các công cụ tìm kiếm.