Hawking is familiar 　　　　 Chinese college students and foreigners are familiar 　　　　

　 Qian Xuesen.

　 A.to；to 　　　 B.with；to　　　 C.with；with 　　 D.to；with

These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．

　 A．would have been unthinkable B．would not be unthinkable

　 C．would be unthinkable D．would not have been unthinkable

______ writing the article, Mr. Qian even forgot his dinner.

A. Absorbed in 　　　　　　　　　　　 B. Absorbing of

C. Having absorbed by 　　　　　　　　　 D. To absorb in

Nowadays，when people talk about magicians，the first one________comes into their mind is Liu Qian.

A．whom 　　　　 B．which　　　　　 C．that 　　　　　　D．what

Nowadays，when people talk about magicians，the first one________comes into their mind is Liu Qian.

A．whom B．which　　 C．that 　D．what