46、 __________one race is more intelligent than another race has never been proven．
A．Which
B．What
C．How
D．That


47、 She was having great difficulty__________，and SO I had to move my car to let her out．
A．to get her car out
B．getting her car out
C．SO as to get her car out
D．as to getting her car out


48、 The generous action of the young man the other clay on the street__________my faith in human beings．
A．rejected
B．regretted
C．restored
D．registered


49、 We’d better fiU up our oil tank somew．here．This highway goes through some very empty countries，and gas stations are few and far__________．
A．between
B．out
C．from
D．behind


50、 I can’t__________what that object is．
A．make for
B．make up
C．make out
D．make over


51、 Doing your homework is a sure way to improve your test scores，and this is especially true __________ it comes to a classroom test．
A．when
B．before
C．since
D．after


52、 __________will be asked to call the office SO that the manager can know how the visit will be going．
A．You，Mary，John and I
B．Mary，You，John and I
C．John，You，Mary and I
D．I，You，Mary and John


53、 The wine is in the refrigerator just wants__________for a couple of minutes．
A．to cool
B．to be cb01ed
C．cooling
D．being cooled


54、 The dollar has gone down against yen；__________Japanese goods are more expensive for Americans．
A．therefore
B．however
C．and still
D．and yet


55、 As preparations were not completed in time，the Conference had to be__________till the next Tuesday．
A．put away
B．put aside
C．cancelled
D．postponed