The underlined part in the second paragraph means ( ).

(单选题)What does the phrase a roller-coaster ride in the first para (单选题)Which of the following adjectives best describes the author’ (单选题)According to the passage, there seems to be disagreement ove (单选题)According to critics, the popularity of private education is (单选题)What seems to be the effect of introducing the new system? ( (单选题)According to the passage, the new college-entrance system is (单选题)According to the passage, which of the following statements (单选题)According to the passage, why is the online programs and cre (单选题)Which of the following could be the topic sentence that is t (单选题)What does " a revolution in credentialing " (in the 2rd para