题目内容：

Faces show emotions. Psychology; computer science, and engineering researchers are joining forces to teach machines to read expressions. If they succeed, your computer may one day "read" your mood and cooperate. Machines equipped with emotional skills could also be used in teaching , robotics, gaming, security, and for psychological diagnoses(诊断).

"Mind Reader", a system developed by Rosalind Picard at the Massachusetts Institute of Technology in the US, uses input from a video camera to do real-time analysis of facial expressions. It reports on whether you seem "interested" or “agreeable” or if you're "confused".

The system can help people detect others' emotions. Picard says this means we could teach a machine to be as sensitive as a human. In fact, a machine can be even smarter: than people since it can tell if a person is lying or just "performing" by analyzing one's facial movements. Jeffrey Cohn, a psychologist at the University of Pittsburgh, uses the Facial Action Coding System to detect human emotions. "The face is always visible," Cohn says, "People communicate a lot about feelings and thoughts through facial expression."

Cohn studied a videotape of criminal who professed to be sad about the murder of several family members and tried to pin the blame on some one else． But Cohn saw no real sadness in the woman's face. Sadness is a combination of facial action units that are difficult to do voluntarily. This means, even though your mouth lies, your face doesn't, and the machine will know it all.

1．People can know a person's emotions from his _____.

A．body movement             B．facial expressions

C．psychological reactions   D．mood and attitude

2．Recent technology development makes ______ by machines possible.

A．mind reading          B．body reading

C．face reading           D．mood reading

3．According to the passage,______.

A．people can no longer tell lies before the new machine

B．people still can tell lies in front of the new machine

C．people have different emotions before the new machine

D．sadness is often difficult to be seen

4．The underlined word "professed" most probably means_______.

A．to pretend something as true B．to acknowledge

C．to show           D．to prove

5．From the passage we can infer that ________.

A．the technology still needs improvement.

B．people can do everything with the new machine .

C．face reading technology is nothing new.

D．face reading technology will be widely used in the future.