A

Getting computers to understand human body language is no simple task£®Let's break down the steps to get a good understanding of what your body language is saying£®

First, the computer needs to see£®So, it needs a camera£®But a computer doesn't see like we do, and it only gets a stream of data from the camera£®So, software first has to recognise the shape of a human body, and then map out the key points of our body£®Some poor souls have to teach a computer what all of our different body parts look like in lots of different lighting conditions, and lots of different body types£®

But understanding that an image contains an elbow, a knee, or a face doesn't do much good£®So, now the computer is paying close attention to our faces and our hands£®Classifying emotions as body language and facial expressions is literally in our genes, so it comes pretty easily£®

But computers need to see a ton of examples of any given kind of body language, then to be told what that body language is or means, and then they can, over time, and with more and more examples, identify that same or similar stance with that emotion£®

If I'm a self­driving car approaching a crosswalk and I see an upheld hand in front of me, I can infer the human wants me to stop as they intend to cross the street£®If I instead see that same human using the “move along”gesture, that's a strong indication that they would prefer me to continue on my journey instead of waiting£®A car has just read your body language£®

1£®What is the most important for computers to understand human body language?

A£®A camera£®¡¡                        B£®A stream of data£®

C£®Software£®                          D£®A lighting condition£®

2£®Why are emotions divided into body language and facial expressions?

A£®To encourage people to know about genes£®

B£®To make computers watch emotions closely£®

C£®To save the time of analysing a ton of data£®

D£®To get computers to recognise them easily£®

3£®What does the underlined word “stance”in Paragraph 4 probably mean?

A£®Attitude£®                          B£®Meaning£®

C£®Behaviour£®                         D£®Expression£®

4£®Which of the following can be the best title for the text?

A£®How Computers Read Body Language

B£®When Self­driving Cars Will Be Born

C£®Why Emotions Are of Importance

D£®What the Unknown Future Holds