革兰氏染色使用染液的顺序是（）.A.稀释复红一碘液一乙醇一结晶紫 B.结晶紫一乙醇一

Dear Michael,

I’m very glad to be your pen-friend. My name is Li Tian, and my English name is Leo. I’m from Wuhan. It’s in the middle of China. I’m in the Number 3 Middle School. There are 55 students in my class, and 28 are boys. From Monday to Friday, we have Chinese, math, physics and P.E. in the morning. I like Chinese and physics, because they’re interesting. I don’t like math. It’s too boring. At noon, I have to have lunch at school because my home is far from my school. We usually have two classes in the afternoon. After school , I like watching TV and listening to the music. I also like playing football, but not the American football.

Please write to me soon.

Yours,

Leo

小题1:This letter is for_____.

A．Leo

B．Mike

C．Li Tian

D．Michael小题2:There are _____girls in Leo’s class.

A．55

B．28

C．27

D．50小题3:How many classes does Leo g have every weekday(工作日)?

A．Four.

B．Five.

C．Two.

D．Six小题4:Where is Leo from?  He is from ______.

A．America

B．A middle part of China

C．Brazil

D．England

The elephants the largest animal walking on Earth．An elephant can carry aloud Of 1,200 pounds． 小题1:        Elephants can be trained to Carry logs(圆木)with their trunks．

小题2:       There are two kinds of elephants：the African elephant and the Indian elephant． African elephants can be identified(识别)by the larger ears．小题3:   Another Name for the Indian elephant is the Asian elephant.The greatest threat(威胁)to elephants is the ivory(象牙)trade．From 1979 to 1989 was a bad time for African elephants．小题4:        In 1989 an international agreement Limited(限制)the trade in ivory，protecting elephants from being killed，but elephants are still Being killed for ivory．小题5:     Don’t even buy anything that looks like ivory!

请仔细阅读短文，将下面五句话还原到文中空白处，并将其标号填入表格相应的位置。

A．They eat 300 pounds of food a day．

B．Please don’t ever buy anything made from ivory!

C．About 70，000 wild elephants were killed for ivory each year．

D．Indian elephants are easier to identify because of their smaller ears．E．They also use their trunks for drinking water，bathing，eating and communicating．

病历：患者，男性，43岁。因膝关节酸痛而口服阿司匹林2片／次，3次／日。1小时前恶心、呕吐，呕吐物为咖啡样，约500ml。柏油样便，量约700g。查体：脉搏120次／分，血压90/75mmHg，神志清，贫血貌。四肢湿冷，上腹压痛。

提示：本病人诊断为急性糜烂出血性胃炎失血性休克。提问：急诊胃镜的最佳时机为（）

A.12小时以内

B.12～24小时内

C.24～48小时内

D.48～72小时内

E.6小时内

F.1周以后

我国肝癌的地理分布特点是（）。

A.沿海高于内地，西北、华北和西南高于东南和东北，沿海江河海口或岛屿高于沿海其他地区

B.沿海高于内地，东南和东北高于西北、华北和西南，沿海江河海口或岛屿高于沿海其他地区

C.内地高于沿海，东南和东北高于西北、华北和西南，沿海江河海口或岛屿高于沿海其他地区

D.内地高于沿海，西北、华北和西南高于东南和东北，沿海江河海口或岛屿高于沿海其他地区

E.海高于内地，东南和东北高于西北、华北和西南，沿海其他地区高于沿海江河海口或岛屿

相对危险度是（）。

A.暴露组的疾病危险性与非暴露组的疾病危险性之比

B.暴露组的疾病危险性与非暴露组的疾病危险性之差

C.病例组有某因素的比例与对照组有该因素的比例之比

D.病例组有某因素的比例与对照组有该因素的比例之差

E.反映某一人群由于某种暴露因素而增加的发病率