题型：问答题 论述题 已知：二次函数y=x2-4x-a，下列说法错误的是[ ]A.当x＜1时，y随x的增大而减小B.若图象与x轴有交点，则a≤4C.当a=3时，不等式x2-4x+a＜0的解集是1＜x＜3D.若将图象向上平移1个单位，再向左平移3个单位后过点（1，-2），则a=-3 查看答案
题型：问答题 论述题 补全对话，有两个选项多余。A: Hi, Mike. The summer vacation is coming. 1 B: Yes, I'm going to Hong Kong for vacation. A: 2 B: I'm going there with my parents. A: 3 B: We're staying there for two weeks. A. 4 B: Well. We are visiting some of our friends and going sightseeing. A: When are you leaving? B: We are leaving next Friday. A: I hope you will have a great time there. B: 5 A. Where are you going for vacation?B. Do you have a plan for vacation?C. How long are you staying there?D. Thank you.E. What are doing there?F. We will have a good time there.G. Who are you going there with? 查看答案
题型：问答题 论述题 术前护理措施不包括（）。患者，男，27岁。转移性右下腹痛24h来诊。体检：体温38．6℃，右下腹有固定压痛，明显肌紧张和反跳痛，白细胞15×10／L，中性粒细胞0．9。诊断为急性阑尾炎，准备急症手术治疗。A．备皮 B．半卧位 C．应用抗生素 D．给麻醉前药物 E．腹痛时用止痛药 查看答案