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【单选题】
铁碳合金共晶转变的温度是( )摄氏度。A.
727
B.
1148
C.
1394
D.
1227
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举一反三
【单选题】When used in a speech introduction, telling a story, asking a question, making a startling statement, and arousing curiosity are all methods of __________.
A.
previewing the body of the speech
B.
gaining the attention of the audience
C.
enhancing the speaker’s credibility
D.
revealing the topic of the speech
【单选题】All audience ______show their tickets to enter the theatre.
A.
. are required to
B.
are required
C.
require
D.
Should be required
【单选题】All audience ______ show their tickets to enter the theatre.
A.
re required to
B.
are required
C.
require
D.
should be required
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