关于枕先露的分娩机转，正确的是A．胎头进入骨盆入口时以枕下前囟径衔接 B．胎头降至骨

下列句子的破折号起什么作用，将所选序号填在括号里。     

     A．表示意思的转折  B．表示后面是解释说明  C．表示声音的延续    

1．远远地望见了一条迂回的明如玻璃的带子——河！（     ）  

2．一条长长的“铁龙”，从柴达木盆地深处的工业新城格尔木起步，跨过巍峨的昆仑山，将通过这里，穿越“世界屋脊”青藏高原，到达雪域圣城——拉萨。（     ）     

3．小猫也许在叫，妈妈——妈妈——这小猫多可怜啊！（     ）  

4．连树与树之间也不缺乏色彩；在松影下开着各种小花，招来各色的小蝴蝶——它们很亲热地落在客人身上。（     ）

由于大多数孕妇感染弓形虫后无明显症状，实验室则成为诊断弓形虫病的重要依据。病原学检验具有确诊意义，其方法主要有（）

A.涂片染色法

B.动物接种分离法或细胞培养法

C.免疫荧光法

D.暗视野镜检法

E.间接血凝法

At the age of 16, Clara Barton was advised to become a teacher, since she was quite shy. She taught in Massachusetts for ten years, and was invited to Bordentown, New Jersey, to teach in a private school. She saw personally that these communities needed free education for their citizens, and she responded by creating a free school, one of the first in her state. Later, officials ignored her and appointed a male as principal instead. She resigned and moved to Washington DC, becoming the first woman employed by the U. S. Patent Office. 

Clara Barton was forever changed by her experience with the troops in the Civil War. She saw surgeons dressing wounds with cornhusks（玉米叶）, since they had nothing else. The medical supplies for the Army were well behind the troops, who were moving faster than their medical supply lines. She brought in a wagon of bandages and medical supplies that she had collected personally beforehand. Barton continued to work on the battlefields throughout the war. 

She helped in the identification process of 13,000 dead Union soldiers. Afterward, she was an important figure in a campaign to identify missing soldiers from the Civil War. This non-stop work debilitated her, and upon recommendation by her physicians, she traveled to Europe to recover herself.

While in Europe, and still in poor health Miss Barton was moved by the hardship on civilians brought about by the France-Prussia war. She helped in their relief effort, and in that work she was inspired to create the Red Cross, which served all troops and civilians. 

Clara Barton returned to America and then began the establishment of the American Red Cross. The US government did not think there would ever be another war, after the horror of the Civil War. But she convinced them that the Red Cross would be valuable to serve in times of natural disasters, as well. This was her lasting legacy（遗产）, an agency that still provides aid to victims today.

小题1:What does this text mainly tell us about?

A．The establishment of the American Red Cross.

B．A general introduction of Clara Barton’s life.

C．Clara Barton’s contribution to the Red Cross.

D．Clara Barton’s service in the army.小题2:Why did Clara give up her job in the free school?

A．Because officials didn’t make her principal.

B．Because she wanted to work in a Patent Office.

C．Because she wanted to serve in the army.

D．Because she was not satisfied with the pay.小题3:The underlined word “debilitated” in the third paragraph means        .

A．rewarded

B．satisfied

C．disturbed

D．weakened小题4:What is the greatest contribution made by Clara Barton?

A．She set up a free school.

B．She collected supplies for the army.

C．She identified missing soldiers.

D．She set up the American Red Cross.

—How do you spell key?

—_____.

A. No, it's not a key

B. K-E-Y

C. It's my key

D. Yes. K-E-Y

外部网络知道了手机的imsi号码，便可以向手机发送数据。（）