【单选题】【消耗次数：1】
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随机题目
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用真值表判断公式“((p?q) ù (q?r)) ? (p?r)”的类型:[填空1]
【简答题】
公式“? (p?q)”的主析取范式为:[填空1]
【简答题】
下面哪个是集合 A={2, 3, 4}上的恒等关系：[填空1]
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则交关系A∩B等于：[填空1]
【简答题】
设 p: 2+3=5. q: 大熊猫产在中国. r: 复旦大学在广州. 则复合命题公式“(r? (pùq)) ? ?p”的真值为:[填空1]
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Translate the following sentence into English.相对于在百货商店购物我更喜欢在网上购物，因为它更加方便和省时。
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Translate the following sentence into English.你讲什么内容并不重要，重要的是你必须要演讲。
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Direction: Fill in the blanks with the words given below. Change the form if necessary.[vain; frame; curve; twist; comb; collapse; scatter; scratch; rebuild; harsh]5. The horses liked this grooming, and I think, if they could talk, they would tell you where to[填空1]or comb.
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Direction: Fill in the blanks with the words given below. Change the form if necessary.[expand; abuse; knowledge; narrative; plantation; property; oppressive; extremely; rebel; abolitionist]6. If someone takes away your[填空1]in that country, you have no recourse.
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Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[ought to; look forward to; in wonder; give way to; look down; on the way to; reach out; put one’s arm around; trip over; cut into]1. My dear, do not[填空1]such gloomy thoughts. Let us hope for better things.