（1）A.They make it possible to follow swimmers' progress.
B.They help swimmers to perform better.
C.They first appeared in the 1970s.
D.They are electronically tagged.
（2）A.Their design stayed the same for long.
B.They could hardly help players win.
C.Their materials remain a mystery.
D.They used to be made of wood.
（3）A.Why technology has improved sports so much.
B.How technology has changed the world of sports.
C.Whether he/she is for or against technological developments in sports.
D.What opinion studio guests hold as to the effect of technology on sports.
【考点】听长对话．
【答案】见试题解答内容
【解答】
【点评】
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发布：2024/5/27 14:0:0组卷：0引用：1难度：0.0
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