.China is one of the largest countries in the world, _______ 9.6 million square (平方) kilometers.
| A．to cover | B．covered | C．covers | D．covering |
My friend, Tom, left New York in 1976 and _____ since then.
| A．hadn't been heard of |
| B．hasn’t been heard of |
| C．hasn't heard of |
| D．hadn't heard of |
China _____ a sharp increase in the number of Social Networking Services users in the past years.
| A．has seen |
| B．saw |
| C．sees |
| D．was seen |
The two giant pandas are so much alike that it is impossible to ________ one from the other.
| A．discover | B．distinguish |
| C．realize | D．observe |
—Did you look up the time of the trains to Shanghai?
—Yes, the early train is ________ to leave at 5:30 am.
| A．likely | B．possibly |
| C．possible | D．due |
________ ，loss implies gain; on the other hand, gain implies loss.
| A．Generally speaking | B．On the one hand |
| C．Believe it or not | D．To be honest |