与湿疹发病有关的因素包括（）。 A.慢性感染灶 B.神经精神因素 C.遗传因素 D.

Thomas Alva Edison (爱迪生)was awarded more patents（专利） on inventions than any other American. When he died in 1931, Americans wondered how they could best show their respect for him. One suggestion was that the nation observe a minute or two of total blackout(关闭，中断). All electric power(电源) would be shut off in homes, streets, and factories. Perhaps his suggested plan made Americans realize fully what Edison and his inventions mean to them. Electric power was too important to the country. Shutting it off for even a short time would have led to complete confusion（混乱）. A blackout was out of the question.

On the day of Edison’s funeral (葬礼),many people silently dimmed(使暗淡) their lights. In this way they honoured the man who had done more than anyone else to the great force of electrity

小题1: This says that Thomas Edison __________.

A．was the only important American inventor

B．received the first American patent

C．received more patents than any other American

D．was the first American inventor小题2: People decided to honor Edison when ________.

A．he made the first electric light

B．electric power was 100 years

C．the country realized electricity’s importance

D．he died in 1931小题3: The suggested plan was to _________.

A．turn off the lights in factories

B．observe a few minutes of total silence

C．dim all electric lights

D．shut off all electricity for a short time小题4: The plan was never carried out because________.

A．not everyone wanted to honor Edison

B．it was too difficult

C．electric power was too important to the country

D．it honored only one of Edison’s inventions

以下事物中不属于商品的是

①自然界中的阳光 　　       ②小明生日收到的礼物 　③废品收购站的废品

④向地震灾区空投的援助物资  ⑤付费的下载软件      ⑥山中的泉水

A．①②④⑥

B．①②③⑥

C．②③④⑤

D．①②③④

假如你是一位隋朝时期的读书人，从江南的余杭（今杭州）乘船到长安赶考，你不可能经过下列哪一段运河

A．江南河

B．通济渠

C．邗沟

D．永济渠

营养输液包括

A．右旋糖酐输液

B．乳酸钠注射液

C．氨基酸输液

D．替硝唑输液

E．氯化钠注射液

病历摘要：患者男性，73岁，右眼视力下降二年余，不伴有红、肿及疼痛症状，眼科检查：视力右眼：0.1，左眼：0.6，双眼晶体轻度混浊，玻璃体未见明显混浊，眼底：右眼黄斑区视网膜萎缩，较多色素沉着，左眼黄斑区有较多玻璃膜疣，视网膜动脉明显变细。

关于渗出性老年黄斑变性，可分为几期？（）

A.三期

B.二期

C.与萎缩性一样

D.早、中、晚三期

E.不能分期

F.渗出前期与渗出期

G.渗出期与瘢痕期

H.渗出前期、渗出期与瘢痕期