With modern technology, even babies weighing _______one kilogram at birth can survive.

This is a______ but extremely difficult technology in the future.

Things like electronics, glass or other ____ objects are often packed with an appropriate protective material to prevent damage. 

You’d be exposed to a lot ______ pollution if you moved to a town with pure water and air.

When dealing with students, teachers are supposed to adopt _______ and caring approaches, as they are unique young individuals of different personalities.