According to the first and second paragraph, the central features of the exhibition is ( ).

(单选题)Despite his Catholic background, Kennedy also became a stron (单选题)But at the same time, 77 percent of moms and dads ( ) tha (单选题)The mobility of cell phones means you can be anywhere and ha (单选题)The differences ( ) difficulty of understanding what is h (单选题)And they must be swifter to embrace new technology, from the (单选题)This nomination will take two months, after which the commis (单选题)Lawyers have questioned the ( ) of the ban on political r (单选题)Already, the ( ) of Homeland Security has handed out hund (单选题)Chinese table cloth is ( ) for its fine quality, exquisit (单选题)We also had to collect immense amounts of historical data an