SET TALK OFF STRING="ABCDEF" N=1 DO WHILE N<5 ?SUBSTR(STRING,N,2) N=N+1 ENDDO SET TALK ON
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举一反三
【简答题】Listen to a story and fill in the missing words. The story will be read three times. The first and the third times it will be read at normal speed, and the second time there will be a 20-second pause ...