31.This product is _______ to change without notice.

　　A.despite

　　B.evil

　　C.subject

　　D.crust

　　32.I don't know how he can _______ himself for such conduct.

　　A.justify

　　B.locate

　　C.rear

　　D.swear

　　33.The stolen watch has been _______ to its owner.

　　A.retired

　　B.pitched

　　C.restored

　　D.cured

　　34.It is _______ cold this winter in Xi'an.

　　A.considerably

　　B.tight

　　C.naval

　　D.moreover

　　35.It has been my _______ to meet with this accident.

　　A.journal

　　B.reduction

　　C.affect

　　D.fate

　　36.Her smile _______ her secret even though she didn't admit the fact.

　　A.reviewed

　　B.reversed

　　C.responded

　　D.revealed

　　37.He ________ that he could finish the job without any help.

　　A.designed

　　B.headed

　　C.claimed

　　D.preserved

　　38.Professor Li _______ his success to his mother.

　　A.owns

　　B.ruins

　　C.owes

　　D.roars

　　39.The election _______ for the State governor has begun this year.

　　A.campaign

　　B.bolt

　　C.hell

　　D.immense

　　40.Anyone without _______ illness can do this simple job.

　　A.mild

　　B.mind

　　C.mental

　　D.mend