Have you seen the popular video of bunnies joyfully bouncing on a backyard trampoline (蹦床)? Adorable as they seemed, the clip was entirely AI-generated. Such fake videos are becoming increasingly common, fooling even careful viewers. As AI tools rapidly advance, distinguishing real content from artificial creations has grown alarmingly harder to do with the naked eye. This challenge hits closer to home than we think, as our parents and kids often face even greater difficulty navigating this digital maze. Yet despite these rising complexities, there are still telltale signs we can learn to watch for.
First, observe facial movements. AI-generated videos often feature unnatural expressions: delayed blinking, stiff smiles that don’t reach the eyes, or overly smooth head turns that feel robotic. Eye direction can also give clues—staring too long, irregular blinking, or looking away at odd moments while speaking.
Lip sync (同步) and audio quality are another giveaway. In many AI-generated videos, mouth movements fail to perfectly match the audio. What’s more, many AI-generated videos use the voice of the person they are imitating, but there are clues to listen for like a robotic tone, unnatural pacing, or background noise that cuts in and out. Sometimes, the voice doesn’t match the environment, for instance, it sounds like the subject is indoors while the person appears to be outdoors.
Pay attention to hands and fine details. AI still struggles with realistic hands—look for blurry fingers, extra digits, or awkward, slow gestures. Clothing and accessories may also have glitches: patterns shifting unnaturally, earrings vanishing and reappearing, or glasses lacking natural shadows or reflections.
While these tips help now, AI continues to evolve. As experts warn, even professionals struggle to tell genuine content from AI-generated fakes. Staying vigilant (警惕的) and learning to spot these slight differences remains our best defense against being misled by AI-generated videos. After all, in this era of synthetic media, a critical eye is more important than ever.
原创编写 版权所有 侵权必究！ 每日更新 个性化阅读 英语飙升！
1.1. Why does the author mention the bunny video at the beginning?
A To explain AI technology.
B To show animal cuteness.
C To bring up the topic.
D To promote trampolines.
解析：选C。C推理判断题。文章开头以兔子视频为例，紧接着指出“Such fake videos are becoming increasingly common”，可见提及该视频是为了引出AI生成的虚假视频这一主题，而非单纯解释技术或展示可爱动物。故选C。
2.2. What can be inferred about facial movements in real videos?
A Blinking may have slight delays.
B Smiles naturally involve the eyes.
C Head turns feel slightly robotic.
D Eye direction changes suddenly.
解析：选B。B细节理解题。第二段明确提到AI视频中存在“stiff smiles that don’t reach the eyes”（笑容僵硬不达眼底），通过对比可推理出，真实视频里的微笑，理应是自然的，且会牵动到眼睛。
A、C、D均是文中描述的AI视频的异常特征，而非真实视频的特点。故选B。
3.3. When the subject appears outdoors but sounds indoors, what specific phenomenon occurs?
A Voice-environment mismatch.
B Lip sync errors.
C Robotic voice tones.
D Background noise cuts.
解析：选A。A细节理解题。第三段结尾明确举例“人像在室外但声音像在室内”属于声音与环境不匹配的典型表现。故选A。
4.4. What does the passage imply about future AI-generated videos?
A They will be easier to detect.
B Their flaws will disappear.
C Caution remains necessary.
D Professionals can’t identify them.
解析：选C。C推理判断题。最后一段提到“AI continues to evolve”但“Staying vigilant... remains our best defense”，“vigilant”意为“警惕的”，与“caution”（谨慎）意思相近，说明尽管AI在进步，保持谨慎仍有必要。A与文意相反，B过于绝对，D曲解“even professionals struggle”的含义。故选C。
