The prevalence of a high ______ of myopia also became alarming as the percentage of senior students in high school, who wear glasses stronger than six diopters, has mounted to 21.9 percent.

(单选题)( ) (单选题)（ ） (单选题)In the midnight the dam gave in and a ______ torrent burst d (单选题)The attorney produced evidence to prove to the court that th (单选题)After a thorough check, the doctor told the man that he was (单选题)The general public depends upon television to know about the (单选题)The ______ that half of the students dislike course. (单选题)When John suggested that they form a basketball team, he fou (单选题)They were excited by the possibility of importing ______ oil (单选题)The little boy pointed to the cut and shouted to the mother,