IP地址分配有动态和( )两种方式。

如图所示是研究声现象的装置，当用小槌敲击乙音叉时，可以听到______，还可以观察到______，这个现象说明______．

患者，男性，38岁，大量饮酒后突然出现中上腹持续性绞痛，伴有频繁呕吐，呕吐物为食物和胆汁，呕吐后腹痛并不减轻。查体：上腹压痛，腹肌紧张，反跳痛，肠鸣音1～2次／分。测血清淀粉酶1200U／L。

经予治疗后，腹痛、呕吐基本消失，患者的饮食宜给予（）

A.可恢复正常饮食

B.少量低糖类（碳水化合物）流食

C.高蛋白、高热量饮食

D.高脂、高糖饮食

E.高脂、低糖饮食

国务院决定，自2009年1月1日起实施成品油价格和税费改革，取消原来成品油价外征收的六项收费，逐步有序取消政府还贷二级公路收费;提高成品油消费税单位税额，汽油每升提高0.8元，柴油每升提高0.7元，其他成品油单位税额相应提高。成品油价格和税费改革的影响是 ( )

A．导致国家财政收入减少，出现财政赤字

B．促进节能减排和环境保护，加快经济结构调整

C．削弱我国石油企业的竞争力和抗风险能力

D．强化政府对成品油价格的控制，维护国家能源安全

Questions 63 TO 67 are based on the following passage:(10分)　　Television,the modern wonder of electronics,brings the world into your own home in sight and sound.And the word‘television’means seeing far.Television works in much the same way as radio.In radio,sound is changed into electromagnetic waves which are sent through the air.Experiments leading to modern television took place more than a hundred years ago.By the 1920s inventors and researchers had turned,the early theories into working models.Yet it took another thirty years for TV to become industry. The influence of TV on the life of people is incalculable:it can influence their thoughts and their way of life.It can also add to their store of knowledge.Educational TV stations offer teaching in various subjects.Some hospitals use TV for medical students to get close-up views of operations. At first television programs were broadcast in black-and-white.With the development of science and technology,the problem of how to telecast them in full color was solved and by the middle 1960s the national networks were broadcasting most of their programs in color. The programs that people watch are not only local and national ones.Since the launching of the first communications satellite,more and more programs are telecast“live”from all over the world. People in San Francisco were able to watch the 1964 Olympic Games in Tokyo.And live telecasts now come from outer space.In 1969,the first astronauts to land on the moon televised their historic “moon walk”to viewers on the earth.Since then,astronauts have regularly sent telecast to the earth.

Television is said to be the modern wonder of electronics,because________.

A．it influences people’s way of life

B．it makes people see far

C．it brings the world into people’s own home in sight and sound

D．it works as radio

有下列程序：
#include＜stdio.h＞
void main()

int x=1，y=0，a=0，b=0；
switch(x)
case 1；
switch(y)

case 0：a++；break；
ease 1：b++ break；
case 2：a++；b++；break；
ease 3：a++；b++；

printf("a=%d，b=%d\n"，a，b)；

程序的运行结果是( )。

A．a=1，b=0

B．a=2，b=2

C．a=1，b=1

D．a=2，b=1