The title that best expresses the idea of the passage is ______.

(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, (单选题)______ of his childhood home in Hannibal, Missouri, provided (单选题)Container-grown plants can be planted at any time of the yea (单选题)In my opinion, you can widen the ______ of this improvement (单选题)As a defense against air pollution damage, many plants and a