Fill in the blanks by selectiong suitable words from the word bank. You may not use any of the words more than once. 请填大写字母(不要打任何标点),不要填写单词。 A speculate B prospect C insight D boost E contest F affected G appreciation H education I spectacular J mystery K recovery L promote M invest N effected O aspiration Research into the human experience helps to 3. ____________ our knowledge about our world. Through the work of humanities sholars, we learn about the values of different cultures, about what goes into making a work of art, and about the 4. _____________ of how history is made. Their efforts depict the great accomplishments of the past, help us understand the world today, and give us tools to imagine the 5.___________ of our future.