20．____in the regulations that you should not tell other people the password of your email account.

　 A．What is required B．What requires C．It is required　 D．It requires

19．After the Shenzhou VI capsule touched down, two astronauts succeeded in traveling around the earth, thus again _____ China is a global space power.

　 A．proving　　　　 B．to prove　　　 C．to have proved　 D．being proved

18．Ba Jin, for ______ experience were adventurous and unforgettable, was an old man always telling the truth.

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

17．The man _____ of shooting 16 schoolchildren was returned to Anhui Province police on Friday following his arrest by Beijing police, the Xinhua News Agency reported on Friday.

　 A．suspecting　　　 B．being suspecte　 C.to be suspected　 D．suspected

16．The _____ , I think, he drew from his simple experiment is not scientific.

　 A．charge　　　　　 B．conclusion　　 C．promise　　　　 D．relation

15．--- Did you know any Chinese, Joyce, before you arrived in Beijing?

　　 --- In fact, never _____ it.

　 A．have I learned　 B．I have learned　　　　　　　　　 C．had I learned　 D．I had learned

14．--- Can I help you, sir?

　　 --- Yes, please. Do you have any books on cooking?

　　 --- There are only a few, ______.

　 A．if any　　　　　 B．if have　　　 C．if some　　　　 D．if do