荧光抗体技术可应用于医学检验中的检测是（） A.自身抗体检测 B.病原体检测 C.免

阅读理解。

     A young boy was playing with a ball in the street. He threw (扔) it too hard and it broke (打破) the

window of a house and fell (掉) inside. A woman came to the window and shouted (大喊) at the boy.

The boy was afraid and ran away. But he still wanted his ball back. A few minutes (分钟) later. The boy

came back and knocked (敲) at the door and said, "My father is going to come and repair (修理) your

window soon." 

     After a while, a man came to the door with tools (工具) in his hand, so the woman let the boy take his

ball away. 

     When the man finish repairing the window, he said to the woman, "Please pay ten dollars." 

     "But aren't you the father of the boy?" the woman asked, looking surprised (惊奇). "No," he

answered, looking more surprised, "Aren't you his mother?"

1. The boy lost his ball because _____. 

A. the ball fell into the woman's garden 

B. the ball broke the window of his house 

C. the ball broke the window and fell into the woman's house 

D. he went through the window of the woman's house

2. The boy ran away because _____. 

A. he was afraid of the woman  

B. he had to ask his father for help 

C. he didn't want his ball back        

D. he had to look for his friends

3. The boy came back again because _____.

A. he father will come soon                    

B. he wanted the ball back 

C. the woman was his mother          

D. a man would come to repair the window

4. The woman let the boy take his ball away _____. 

A. because she thought he was honest (诚实的) 

B. because he came back and repaired the window 

C. because she thought the man was his father 

D. because his father repaired the window

5. Which of the following is RIGHT? 

A. The boy was the son of the man. 

B. The man was the father of the boy. 

C. The woman knew the man was the father of the boy. 

D. The man thought the woman was the boy's mother.

百分表和游标万能角度尺，根据其用途和特点，属于（）。

A.万能量具

B.专用量具

C.标准量具

D.通用量具

胃酸的主要成分是盐酸，胃酸过多的病人需用药物治疗．下列药物（主要成分）不能用于治疗胃酸过多是

A．NaOH

B． NaCl

C． CaCO₃

D． NaHCO₃

如果伤亡人员中有来自海外的旅游者，责任方和报告单位在对伤亡人员核查清楚后，要及时报告______。

大型演唱会舞台上采用了多组返送音箱，摆放时应（）。