II. Cloze Test
         Some common items that we use every day have more uses than we ever imagine. Similarly, excellent inventors get ideas from their own daily _16_. For example, citrus peel helps remove the _17_ stain when we stain the desk with markers or correction fluid by accident. This is due to the fact that the organic substances _18_ the acid content work magic. Another example is a built-in sensing faucet by a seventeen-year-old Teng Hung-chi, who didn’t want to touch the faucet with his dirty hands from work. Life is full of problems and we understand _19_ them with what we learn and what we have. Sometimes, we are frustrated, _20_. With carefulness, we just learn, grow, and enjoy what life challenges us.
【題組】16.
(A) experiences
(B) conclusions
(C) experiments
(D) celebrations