【单选题】【消耗次数：1】
John’s score on the test is the highest in the class; he ____ last night.
①
must study
②
should have studied
③
must have studied
④
is sure to study
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相关题目
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You must have stayed up late last night, _____?
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somewhat
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Something must have happened on their way. Or they_____
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should have arrived
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随机题目
【单选题】
关于昏厥的描述，以下说法不正确的是（）
①
或站立过久、疼痛、精神紧张，均可使大脑短时间出现供血不足，引起昏厥
②
昏厥发生前，病儿多有短时间的头晕、恶心、心慌、眼前发黑、四肢发凉、出冷汗的症状
③
让病儿平卧，松开衣领、腰带，头部略放低，腿略抬高，改善脑部供血，不久即可恢复
④
病儿清醒后，不需补充糖盐水或者热饮
【单选题】
幼儿中暑后，不宜采取下列哪种处理方法？
①
将病儿移至阴凉通风处，解开其衣扣，让其躺下休息
②
凉毛巾冷敷头部，用电扇或扇子扇风，助其散热
③
给病儿口服人丹、十滴水
④
不能给病儿喝清凉解暑的饮料