"Revival" meansRecovery; Death means the end of one's life; Monument is usually a figure or symbol that represents something or someone; Province is a territory usually part of a larger state or country; and Possibility is a potential outcome.

"Unrest" meansturmoil。"Peace" and "calmness" are antonyms of "unrest" and meantranquiity。"Enjoyment" meanspleasureoramusement。"Democracy" is arepresentative government.

A "preamble" isan introduction that appears before the main body of work, so "introduction" is the correct answer. For clarification, "finale" and "conclusion" each meanan ending, a "tome" isa long and ponderous book, and an "index" isa list of subjects that appear at the end of a book and the numbers of pages on which one can read about them in that book。

"Retrospect" meansrecollection,remembering pastevents,hindsight。You might be able to infer this meaning from the word's roots; "retro-" meansbackwards, as in the word "retroactive" (applying to a span of time in the past) and "spect"meanslookorsee, as in the word "spectacles" (glasses). So, "hindsight" is the correct answer. For clarification, "optimism" isa positive feeling about future events, "prosperous" meanswealthyorsuccessful, "exuberant" meanslively,“埃文escent" meansfleeting。

"Prescience" meansforesightorthe ability to know about something before it has actually happened."Shortsightedness" and "myopia" are synonyms, so we can eliminate those. "Improvidence" meanspoor planning for the future, and "unpredictability"the quality of not being able to be foreseen。"Foreknowledge," which meansforesightor知道ledge of something before it happens, is the only choice that works.

"Impartial" information isunbiased and uncorrupted by personal intervention。For clarification, someone who is "bashful" iseasily embarrassed; "harangue" meansberate or criticize。

"Unaware" meansunknowing。“通知”是指知道ing, so it cannot be the correct answer, because it is an antonym, not a synonym, of "unaware." None of the other answers are close in meaning to "unaware": "obvious" meansovertorpalpable; "complete" meanslacking nothing necessary; and "precise" meansexact。

"Uncertain" meansnot known with certainty, so "unknown," an adjective that meansnot known, is the correct answer. "Conclusive" is an antonym of "uncertain"; it meansdefiniteorindisputable.None of the answer choices have a meaning related to that of "uncertain": "bright" meansshiningoremiting lots of light; "idiotic" meansstupidorfoolish; and "frequent" meansoccuring oftenorrepeated.

"Uncertain" meansunknownorunsure, so "unsure" is the correct answer. None of the other answer choices are close in meaning to "uncertain": "complex" meanscomplicatedorhaving many different parts; "frequent" meansoccurring repeatedly in a relatively short amount of time; "profitable" meanslucrativeorcapable of making a lot of money; and "secretive" meanshiddenorconcealed。

The word “indispensable” consists of the negative prefix “in-,” which means “not,” and the word “dispensable,” so we can infer that it means “not dispensable.” That inference would be correct, as “indispensable” is an adjective that means “absolutely necessary,” so we need to pick out a word that means something like “necessary.” “Superfluous,” then, cannot be the correct answer, because “superfluous” means “unnecessary, especially through being more than enough,” making it an antonym, not a synonym, of “indispensable.” “Essential,” however, is an adjective that means “absolutely necessary; extremely important,” and because “essential” is the answer choice closest in meaning to “indispensable,” “essential” is the correct answer.