B) Match the arguments (1-4) to the justifications (a-d).
useful
2. enables distance learning
3 expensive
4
lack of emotion
a not cheap to purchase or maintain
b can allow students who can't attend school
to participate in lessons
c can program them to perform a variety of
tasks
d cannot display emotions towards students
Doctor of medicine Eugene Suslov learned to diagnose cancer in patient's saliva. This method is effective, safe and painless. The result can be found in a few hours. This new method of diagnosis is one of the top 10 inventions of Ukraine. This cheap method can save millions of lives.