用同一台显微镜观察同一标本,通过更换目镜、物镜和调节给准焦螺旋后,在视野中分别看

题型:选择题

问题:

用同一台显微镜观察同一标本,通过更换目镜、物镜和调节给准焦螺旋后,在视野中分别看到了下列图象,其中视野最暗的是(  )

A.

B.

C.

D.

考点:显微镜的构造和使用
题型:选择题

单药纸片搭桥法联合药敏试验,细菌对甲、乙两药均敏感,两药抑菌环交界呈锐角,两药联合对被检菌产生的作用是()

A.协同作用

B.拮抗作用

C.累加作用

D.无关作用

E.其他作用

题型:选择题

混凝土配合比设计时必须按耐久性要求校核______。

A.砂率

B.单位水泥用量

C.浆集比

D.水灰比

题型:选择题

该保险公司第三笔业务应纳营业税( )万元

A.0

B.5

C.7.5

D.2.5

题型:选择题

A thief returned a mobile phone and thousands of yuan he had stolen from a woman after receiving 21 text messages from her, a local newspaper reported.

Pan Aiying, a Chinese teacher at Wutou Middle School in Qihe County, in East China’s Shandong Province, didn’t think her text messages would help to get her belongings(财物) back.

A young man riding a motorcycle robbed her of her bag, in which there was her mobile phone, bank cards and 4,900 yuan, as she was riding her bicycle home on Saturday evening.

Pan said at first she considered calling the police, but then decided to try to persuade(说服)the young man to return her bag. Pan called her lost phone with her friend’s, but couldn’t get through. So she began sending messages.

“Hey, I’m Pan Aiying, a teacher from Wutou Middle School. You must be going through a difficult time. If so, I will not blame you.” Wrote Pan in her first text message, which got no answer. “Keep the 4,900 yuan if you really need it, but please return the other things to me. You are still young. To make mistakes is human. Correcting your mistake is more important than anything.” Pan wrote in another message.

She gave up hope after sending 21 text messages without any answer and planned to call the police the next morning. However, as she left her home on Sunday morning, Pan found her stolen bag lying in the courtyard. Nothing was lost.

“Pan: I am sorry. I made a mistake. Please forgive me. You are so kind even though I stole from you. I’ll correct my ways and be an honest person,” said a letter left with the bag.

1. Where was Pan Aiying robbed?

A. In the school.   B. At home.   C. In the courtyard.   D. on her way home

2. Why didn’t Pan Aiying call the police at first?

A. Because she thought the police wouldn’t help her.

B. Because it was too late at that time.

C. Because she wanted to communicate with the thief first.

D. Because her friend asked her not to.

3. How long was Pan Aiying’s bag missing?

A. About two days.                      B. About 12 hours.  

C. About one day and a half.               D. About 24 hours.

4. From the news we can learn that ____________.

A. the young man would not steal any more

B. Pan Aiying didn’t give up hope after sending 21 text messages

C. the young man would pay a visit to Pan Aiying personally

D. Pan Aiying teaches English in a middle school in Shandong Province

题型:选择题

只有进行()建设,才能不断解决民族问题,实现民族的繁荣发展。

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