Use the methods in this document, analyze the importance of information (rather than understand the language), identify key information. Key information includes: special punctuations and characters, special sentences, key words, and opinion sentences (if there are opinions). (Some natural science articles have opinion sentences)Don't read every sentence. If a sentence has nothing special or important, skip the sentence.Don't read every paragraph carefully. When read choices, pay attention to key words. If there is a wrong key word, the choice should be given up immediately.