在测控系统中，为了保存现场高速采集的数据，最佳使用的存储器是( )。A．ROM B．

阅读理解。

     We talk every day. When we have good news, we like to share it with our good friends and when

something terrible happens, we make it known to others soon. But can you imagine that a tree can talk and

share hews too? Of course, no tree moves lips and says words just as people do. Strange as it may sound,

though, some trees do manage to communicate with each other.

     Willow (柳树) trees are the best-known of these trees. When insects (昆虫) begin nibbling (叮咬) a

willow tree, the tree sends out a special smell at once. This smell tells the other willows that harmful insects

are coming near. All of them quickly make a chemical (化学物质) in their leaves. This chemical is bad to the

insects. The insects do not like it and they fly away soon. In this way, the willow trees protect themselves

from the insects.

     The next time when you take a walk in the woods, maybe the trees are "talking" to each other quietly. And

when someone says that trees cannot "talk", please tell them that even trees give messages to each other, too.

1. Willow trees send messages with _________.

A. words

B. movements

C. smells

D. sounds

2. The underlined word "lips" in the first paragraph means ________.

A. 树干

B. 嘴唇

C. 枝条

D. 手势

3. The passage tells us that some of the trees can ________.

A. speak just as people do

B. tell stories to others

C. communicate with each other

D. kill insects in the woods

4. According to the passage, the right order of the following is ________.

a. The willow tree gives out a smell.

b. The willow trees make a chemical in their leaves.

c. Insects fly away because of the chemical.

d. Insects begin nibbling a willow tree.

A. d-a-b-c

B. d-b-a-c

C. a-b-c-d

D. d-c-b-a

阅读以下图文材料，用简洁的语言描述此校徽并写出其内涵。

　　创立于1898年的北京大学初名京师大学堂，1912年更名为“国立北京大学”。1916年12月，著名教育家、民主主义革命家蔡元培出任北京大学校长，他循自由思想原则，取兼容并包主义，推动了北大的思想解放和学术繁荣，使北大成为传播新文化的重要阵地。 　　

　　蔡元培出任北京大学校长之前，北大并没有校徽这一新生事物，亦即没有专属自己的旌旗标识。蔡元培上任后的第二年，即1917年，即出面请鲁迅设计北大校徽。    图示如下。

__________________________________________________。

肾病综合征患者饮食指导错误的是()

A．正常蛋白饮食

B．高蛋白饮食

C．低胆固醇饮食

D．低盐饮食

E．低磷饮食

甲亢病人经术前准备可以手术的基础代谢率为（）。

A.+15%以下

B.+20%以下

C.+25%以下

D.+30%以下

E.+35%以下

商业银行通常会以票据面额的多少向票据抵押的借款人发放借款金额______

A．50%
B．60%
C．60%～80%
D．80%