填空题：组成自动控制系统最基本的单元是（）。

题型：阅读理解

                                                                 A
Dear Editor Lee,
   I am a student from a junior middle school. I am good at all the subjects except English. I
can't remember words well. I am especially weak in speaking and listening. What shall I do?
Could you give me some advice?
                                                                                                                            John

                                                                 C
Dear Editor Lee,
   I was getting on well with my best friends. But a few days ago, another friend of mine told
me that she often said bad words about me. When I heard this, I was very angry. What should
I do? Should I stop being her friend or stay with her as usual?
                                                                                                                              Betty

                                                                 D
Dear Editor Lee,
    Recently I have much difficulty in falling asleep. When I go to bed, though I feel very sleepy, I always think a lot and can't fall asleep. So I always feel very tired in class and sometimes my
head hurts badly. Could you give me some advice?
                                                                                                                              Steven

( )1. The student finds it difficult to fall asleep.
( )2. The student doesn't know what to say to strangers.
( )3. The student doesn't know how to learn English well.
( )4. The student doesn't know if she should still stay with her best friend.
5. 请写出你的一个烦恼：________________________________________

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题型：填空题

钢铁的生产与使用是人类文明和生活进步的一个重要标志。全世界每年因生锈损失的钢铁约占世界钢铁年产量的1/4。随着金属材料使用量的增加和矿物资源的紧缺，人们对资源保护的意识日趋增强。

(1)保护金属资源的有效途径为（任写出两条）____________________。

(2)取6根铁钉，6支干净的试管及其他材料，准备如上图，

试管(1)放入一根铁钉，再注入蒸馏水，使铁钉和空气及水接触。

试管(2)先放入一根铁钉，趁热倒入煮沸的蒸馏水（赶出原先溶液在蒸馏水中的空气）浸没铁钉，再加上一层机油（矿物质油），使铁钉不能跟空气接触。

试管(3)的试管底放入硅胶（是一种干燥剂），再放入铁钉，用棉花团堵住试管口，使铁钉和干燥空气接触。

试管(4)中放入铁钉注入食盐水，使铁钉和空气及食盐水接触。

试管(5)放入相连的铁钉和锌片，注入自来水，浸没铁钉和锌片。

试管(6)放入相连的铁钉和铜丝，注入自来水，浸没铁钉和铜丝。

把6支试管放在试管架上，几天后观察铁钉被腐蚀的情况，其中____试管内的铁钉未被腐蚀。从铁钉被腐蚀的情况可知引起和促进铁钉腐蚀的条件是____________________。

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题型：单项选择题 A1/A2型题

阳虚证最主要的表现是（）

A.舌质淡白苔薄白

B.口不渴或少饮

C.面色白而无华

D.脉沉细无力

E.经常畏寒肢凉

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题型：多项选择题

药物不良反应的主要测量指标有（）。

A.ADR发生率

B.ADR死亡率

C.ADR经济耗损的评价

D.ADR保护率

E.ADR感染率

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题型：填空题

下面的程序是使用结构型来计算复数m和n的差。
main()
struct comp
float re；float im；；
______m，n，z；
scanf("%f，%f，%f，%f"，&m.re，&m.im，&n.re，&n.im)；
z.re=______；z.im=______；
printf("%6.2f+%6.2fi\n"，z.re，z.im)；

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组成自动控制系统最基本的单元是（）。

题目：

答案：