Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-104

Have you ever wondered how your smartphone or smart speaker understands your voice commands? Digital assistants like Siri, Alexa, and Google Assistant make modern life more convenient. These AI-powered helpers seem to (35) __________ complex tasks with ease, from setting an alarm to answering a difficult question. However, behind this simple interaction is a sophisticated process that allows machines to recognize and respond to human speech. The journey from a spoken command to a completed action involves several crucial steps.

The process begins with listening. First, the device is always listening for a specific (36) __________ word, like 'Hey Siri' or 'Alexa'. This trigger phrase is stored locally on the device for privacy and speed. Only after it recognizes this trigger (37) __________ it begin recording your command. This recording is then immediately compressed and prepared for the next stage. This initial listening phase is vital for the assistant to know precisely when to pay attention.

Next, the recorded audio is sent to a powerful server, where it is converted into text. (38) __________ is a process known as Automatic Speech Recognition (ASR). The ASR system breaks your speech down into smaller sound units, called phonemes, and uses complex algorithms to match them to words. The AI must then analyze the text for its (39) __________ meaning. It doesn't just see words; it tries to understand the user's goal or intent.

Then, the assistant’s AI searches vast databases to find the (40) __________ relevant answer or action. This step is called Natural Language Processing (NLP). The AI analyzes the grammar and context to determine what you are asking for. For a task like playing a song, the AI (41) __________ identify the song title and artist and then command another application to play it. For a question, it will find and formulate a concise answer.

Finally, the assistant delivers the response. This is usually done by converting the text answer back into spoken words using a synthesized voice, or by simply performing the requested action. (42) __________, what feels like a simple conversation is actually a high-speed technological process involving listening, converting, and processing data almost instantly.

You scroll through your social media feed and see a stunning photo: a famous landmark surrounded by mythical creatures, or a politician in a situation that seems unbelievable. Ten years ago, you might have dismissed it as a clumsy Photoshop edit. Today, however, that image could be a 'deepfake'—a highly realistic but completely artificial creation from an AI image generator. Tools like Midjourney and DALL-E are blurring the lines between what is real and what is fiction, presenting a new and complex challenge for everyone who uses the internet.

The technology behind these images is both fascinating and powerful. Users simply type a text description—a 'prompt'—and the AI generates a unique image based on it. The more detailed the prompt, the more realistic the output. These systems have become increasingly sophisticated, learning from billions of images on the internet to understand concepts, styles, and details. What was once a niche technology requiring powerful computers is now accessible to almost anyone with an internet connection, leading to an explosion of AI-generated content online.

This explosion has significant consequences, especially for teenagers who are highly active on social media. Misinformation can spread like wildfire. A fake image of a public figure saying something they never said, or a fabricated scene from a political protest, can easily fool people. When AI-generated images appear in news feeds and advertisements, they can manipulate opinions and emotions without the viewer even realizing it. The problem is no longer just about spotting a bad edit; it's about questioning the very nature of the visual information we consume daily.

This global phenomenon has a strong echo in Vietnam, where active online communities, such as those on the forum Voz.vn, frequently discuss the latest advancements in AI. Members share incredible AI creations but also debate their potential for misuse, from creating fake celebrity scandals to influencing public opinion. This conversation highlights a crucial modern skill: digital literacy. It is no longer enough to just consume content; we must learn to critically evaluate it. The most important defense is not to block the technology, but to develop the skills to question what we see.

So, how can you protect yourself from being deceived? The first step is to cultivate a healthy sense of skepticism. Before you share or believe an image, pause and think. Look for small, tell-tale signs of AI generation, like oddly shaped hands or unnatural textures. More importantly, always try to verify the source. Is the image from a reputable news agency or an anonymous social media account? Tools like reverse image search can also help you track an image's origin. In this new digital era, trusting your eyes is not enough; you have to trust your critical thinking skills.