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【单选题】
设P :龙凤呈祥是成语,Q :雪是黑的,R :太阳从东方升起,则下列假命题为A.
P→Q∧R
B.
Q→P∧R
C.
P→Q∨R
D.
Q→P∨R
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【简答题】以下（ ）不是借贷记账法的优点。
【简答题】以下（ ）不是借贷记账法的优点。
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A.
Because it takes too much time.
B.
Because institions don’t like it.
C.
Because it doesn’t lead to progress.
D.
Because only a few people are able to do it.
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