He has made a discovery ( ) of great importance to the progress of science and technology.

(单选题)What measures should supermarkets carry out according to the (单选题)What’s the status quo of the new law？ ( ) (单选题)How are supermarkets reacting to the law？ ( ) (单选题)What’s the present situation of farmers and food producers c (单选题)What’s the new law aiming at？ ( ) (单选题)( ) (单选题)( ) (单选题)( ) (单选题)( ) (单选题)( )