71We can communicate ________ others ________ cell phone．
A.with; with
B.with; by
C.to; though
D.to; on
开始考试练习点击查看答案72The Canadians struggled all through the years ________ US ________ the Japanese．
A.with; against
B.for; against
C.to; with
D.against; for
开始考试练习点击查看答案73Many representatives agree that education is the key _________ future success, which has great effect _________ the development of our country．
A.of; on
B.to; in
C.of; in
D.to; on
开始考试练习点击查看答案74Like English, the French language has changed a lot _______ these centuries．
A.over
B.on
C.above
D.beneath
开始考试练习点击查看答案75Parking is limited ________ 30 minutes．You can only park for 30 minutes．
A.within
B.to
C.in
D.for
开始考试练习点击查看答案76Now we can watch various live TV programmes ________ the communication satellites．
A.on
B.in
C.from
D.via
开始考试练习点击查看答案77Your speech at the meeting is limited ________ half an hour．
A.at
B.for
C.in
D.to
开始考试练习点击查看答案78________ clear nights, you can clearly see the Milky Road across the night sky．
A.In
B.At
C.On
D.During
开始考试练习点击查看答案79What else do you want ________ the ice cream．
A.besides
B.except
C.except for
D.but
开始考试练习点击查看答案80Doctors around the world are preparing ________ a possible outbreak of bird flu because few current vaccines will guard against．
A.against
B.with
C.beyond
D.regardless of
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