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【简答题】
Listen to the recording and complete the following sentences. 1 The ___1___ will be fine for the next ___2___ days. Then, on ___3___, ___4___ 'll be some rain in the ___5___. The ___6___ will be dry and sunny, but only about ___7___ degrees. 2 A: I'm thinking of going to the ___8___ tonight. B: Me too! Let's ___9___ go ___10___! 3 A: Are you ___11___? B: No, thanks. 4 A: ___12___ are my ___13___ and ___14___, about ___15___ years ago. And this is my older ___16___ - he was about ___17___ years old. B: And the baby - is ___18___ you? A: Yes, that's me, ___19___ my ___20___ in my mouth!
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【简答题】布尔逻辑检索的逻辑运算符有与、或、非三种,逻辑算符的优先级为( )( )( );可用括号来改变优先顺序。
【简答题】检索过程中,如果检索词中带有括号或逻辑运算符 *、+、— 、()、《》 等特殊字符,必须在该检索词上用( )括起来,以免与检索逻辑规则冲突。
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