One of the sides of the wood board should be painted yellow, and ________.
| A．the other is white | B．another white | C．the other white | D．another is white |
Because of global warming, the ice that polar bears depend on for survival _______.
| A．are slowing disappearing | B．is slowly disappearing |
| C．are slowly disappeared | D．have slowly disappeared |
Ten giant pandas are heading to the Shanghai Expo, _________ they will go on year-long display.
| A．which | B．where | C．what | D．when |
-- The terrible accident is under investigation.
-- Actually, quicker action ________ those workers trapped in the mine.
| A．might have saved | B．must have saved |
| C．should have saved | D．could have saved |
A strong earthquake struck Chile's central-south coast on February 22, ________ great damage to buildings
| A．caused | B．to cause | C．causing | D．having caused |
China has made efforts to respond to _______ climate change, and set targets to control greenhouse gas emissions by 2020.
| A．/; / | B．/; the | C．the; / | D．the; the |