28______A. emptyB. narrowC. secretD. open
28______
A. empty
B. narrow
C. secret
D. open
相关考题：
下列程序的执行结果是______。STORE "" TO ASTORE.NULL.TO BSTORE O TO C? ISNULL(A),ISNULL(B),ISNULL(C),EMPTY(A),EMPTY(B),EMPTY?
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Doctors are required to keep patients' records completely confidential.A: detailedB: accurateC: confidentD: secret