A: The advantages, uses, defects and improvement methods of face recognition technology.

2. the correct understanding of the content of the article is: D.

A. Face recognition is popular and widely used because of its high recognition efficiency, accuracy and no defects.

B face recognition technology can be used for security monitoring, finding and chasing criminals, and also for transaction payment.

C. Unlocking the mobile phone with face recognition technology will make the mobile phone safer and more reliable. It is impossible to open someone else's mobile phone without the owner's permission.

D. The combination of face recognition technology and manual work will greatly improve the reliability of face recognition.

3. What are the main methods of underlined sentences? What's the role?

A: For example, the example of deceiving Xiaomi 8 mobile phone face recognition to unlock the mobile phone accurately shows that "face recognition has blind spots and weaknesses", which makes the explanation more specific and convincing.

4. What are the advantages of face recognition compared with other means?

Answer: Face recognition is simple, and it is more efficient to obtain the recognized face information without being perceived by individuals.

5. Face recognition has a bright future. Please imagine where face recognition can be applied.

Answer: Face recognition ticket inspection greatly improves the efficiency of ticket inspection and reduces the cost; Face recognition payment is convenient and fast; Face recognition query information is accurate and reliable.