发生于幕下第四脑室的室管膜瘤应与下述哪种肿瘤相鉴别A．松果体肿瘤 B．星形细胞瘤 C

所有卒中患者溶栓前都必须做的辅助检查是（）。

A.平扫脑CT或脑MRI

B.肝功化验

C.脑电图

D.动脉血气分析

E.凝血常规

     "Sesame Street" has been called "the longest street in the world." That is because the television

program can be seen in so many parts of the world. That program became one of America's exports

soon after it was shown in New York in 1969.

     In the United States more than six million children watch the program regularly. Although some people do not agree to some parts of the program, parents praise it highly.

     Tests have shown that children have learned much from watching "Sesame Street". The children who

watch it five times a week learn more than those who watch it less. In the United States the program is

shown at different hours during the week in order to increase the number of children who can watch it

regularly.

     The programs use songs, stories, jokes and pictures to give children a basic understanding of

numbers, letters and human relationships.

     Why has "Sesame Street" been so much more successful than other children's shows? Many reasons

have been suggested, such as the educational theories of its producers, the support from both the

government and businessmen, and the full use of various kinds of television skills. Perhaps another

important reason is that mothers watch "Sesame Street" together with their children. This is partly because

famous film stars often appear on "Sesame Street". But the best reason for the success of the program

may be that it makes every child watching it feel able to learn. The child finds himself learning, and he

wants to learn more.

1. The "Sesame Street" has been called "the longest street in the world" because it is ______.

A. the longest street in the United States

B. shown in many countries

C. the longest television program in the world  

D. watched regularly by six million children

2. In the United States many children can watch the program regularly because ______.

A. they needn't go to school

B. it is shown many hours a day

C. it is shown in the evening

D. it is shown many times during the week

3. One of the important reasons for the success of the program is that ______.

A. not only children but also their mothers like to watch it  

B. many famous film stars enjoy watching it

C. it teaches educational theories

D. it is produced by the government  

材料一  2012年9月25日，全国各地群众来到位于河北易县的狼牙山，登上了五勇士纪念塔，追忆他们的悲壮之举，纪念狼牙山五勇士壮举71周年，重温五勇士为掩护群众阻击日寇英勇杀敌、斗智斗勇、纵身跳崖的战斗经历，感受其所承载的民族精神。

材料二  2012年6月，“神州九号”发射成功。从“神州一号”到“神州九号”，我们感受到了航天人身上的伟大民族精神。

（1）从材料一中的“狼牙山五勇士”到材料二中的“航天人”，我们无不感受到伟大的民族精神的力量，请问我们中 * * 精神的内涵是什么？(4分)

（2）由以上两则材料我们能感受到民族精神在我国历史上发挥了怎样的重要作用？（4分）

（3）请谈谈如何弘扬和培育民族精神？（4分）

中心静脉压增高或降低，其临床意义提示()

A．心功能不全

B．心律不齐

C．血压变化

D．有效循环的变化

E．右心衰

花境中使用的花卉可以多样，但也要注意不能过于杂乱，一般以（）种组合配置较适宜。

A、3-4

B、5-10

C、10-12

D、12-15