It is in February that came the historic visit of Nixon to China. During the visit Sino－Am

It is indicated in the passage that it is most likely for the Ph.D.s in philosophy to beA．

It is I that is in charge of the project sponsored by the government.

He came to know that the knowledge from books can be useful only _____it is linked with pr

It is stated in the passage that those responsibl

It is said in the book that Thomas Edison （1847～1

The night is not what it was. Once the Earth was cast half in shadow. Then came fire can