The country has an aging population and a severe ( ) of young workers.

(单选题)They’re not allowed contact with the outside world or any su (单选题)The more diverse knowledge one understands and actively abso (单选题)Israeli officials blame the settlers, saying they have refus (单选题)Today, China’s massive industrialization and ( ) for cars (单选题)Science relies on hard evidence and will ( ) nothing as t (单选题)What’s the proper title for this passage? ( ) (单选题)On hearing “……there’s been a terrible mistake……” Frank was m (单选题)When he heard the knock at the door, Frank probably thought (单选题)Why did Frank dare to shout to his boss? ( ) (单选题)What do we know about Frank? ( )