46. According to the author biometric technology is____.

A in the stage of theoretical study

B widely used in the world

C about to be out of date

D developing rapidly

47. What is one of the advantages of biometric technology?

A It better protects people’s privacy.

B It helps people follow a healthy life style.

C It is cheaper than traditional methods.

D It identifies people more accurately

48. The author used the health insurance case mainly to ____

A illustrate the use of the technology

B give suggestions on buying insurance

C draw attention to the problem of the technology

D emphasize the importance of healthy diet

49. In which of the following situations is biometric technology NOT used?

A Computers are switched on by a voice order

B Doctors diagnose disease through patients’ voice.

C Museum doors are controlled by palm scanner.

D The police identify criminals through fingerprints.

50. Which word would you use to describe the author’s tone in this passage?

A Supportive

B Objective

C Critical

D Indifferent