第2题: [单项选择]Questions 19 to 21 are based on the conversation you have just heard. A. Before finishing school. B. After finishing university. C. During her university course. D. Between school and university. 参考答案:D 答案解析:[听力原文]19-21 M: Come in. W: Good morning, Mr. Brown. M: Oh, come in, Mary. I’ve been expecti
第8题: [单项选择]It seems oil ______ from this pipe for some time. We'll have to take the machine apart to put it right. A. had leaked B. is leaking C. leaked D. has been leaking 参考答案:D 答案解析:[解析] 根据句中的时间状语for some time可知,所填空的时态应有两种选择:现在完成时或现在完成进行时,而[A]为过去完成时,故[D]为答案。
第14题: [单项选择]女性,62岁,曾被诊断为"轻型"糖尿病,用饮食管理即能控制血糖在"正常范围",近10天因口齿不清,在外院诊断为"脑血管意外",昏迷2天后转入本院治疗。转入病房后经上述检查,CT发现为广泛性脑腔隙性梗死,血糖30mmol/L,血钠165mmol/L,尿酮(+),患者昏迷的原因应为() A. 高渗性非酮症性糖尿病昏迷 B. 糖尿病酮症酸中毒 C. 乳酸性酸中毒 D. 广泛性脑腔隙性梗死 E. 脑血栓形成 参考答案:A
第27题: [单项选择]假设总供给曲线为正斜率,当生产所需原材料的实际单位成本下降时() A. 总需求曲线左移,价格水平降低,实际产出增加 B. 总需求曲线右移,价格水平降低,实际产出增加 C. 总需求曲线左移,价格水平上升,实际产出减少 D. 总需求曲线右移,价格水平上升,实际产出减少 参考答案:B