造血首先出现的部位是 A.骨髓 B.肝脏 C.胸腺 D.卵黄囊 E.淋巴结

题型:单项选择题

问题:

造血首先出现的部位是

A.骨髓
B.肝脏
C.胸腺
D.卵黄囊
E.淋巴结

考点:临床执业医师儿科学小儿造血系统疾病(二)
题型:单项选择题

阅读短文,选择正确答案。

    A little boy invited his mother to attend (出席) his elementary school's first teacher-parent meeting. To the

little boy's dismay (沮丧), his mother said she would go. This would be the first time that his classmates and

teachers met his mother and he was embarrassed (尴尬的) by her appearance. There wasf a severe (严重的)

scar (伤疤) that covered nearly the whole right side of her faced. The boy never wanted to talk about why or

how she got the scar.

    At the meeting, the people were impressed (留下深刻的印象) by the kindness of his mother with the scar,

but the little boy was still embarrassed and hid himself from everyone. However, he could hear clearly the

conversation between his mother and the teacher. 

    "How did you get the scar on your face?" the teacher asked.

    The mother replied, "When my son was a baby, he was in a room that caught on fire. Everyone was too

afraid to go in because the fire was out of control, but I went in. As I was running towards his bed, I saw a

burining wood falling down andn I placed myself over him trying to protect him. I was knocked to be

unconscious (无知觉的), but luckily, a fireman came in and saved both of us." She touched the burned side of

her face. "This scar will be forever, but unitl today, I have never regretted doing what I did." 

    When the little boy heard this, he couldn't help running towards his mother with tears in his eyes. He hugged

her and felt his mother was greater than anyone. He held her hand tightly for the rest of the day.

1. The boy's mother was actually (事实上)________.[ ]

A. ugly

B. kind

C. beautiful

D. ugly but kind

2. According to the passage, the little boy ________. [ ]

A. didn't ask her mother to attend the meeting

B. wanted her mother to attend the meeting at first

C. didn't really want her mother to attend the meeting at first

D. wasn't moved by what her mother said

3. After reading the passage, we know _______. [ ]

A. the people at the meeting didn't like the boy's mother

B. the boy's mother was brave but foolish

C. the boy hated what his mother had done

D. we should respect our parents whatever they are like

题型:单项选择题

为更好地完成参与观察工作,观察者应遵循的规则有()。

A.明确观察的主要问题

B.合理安排观察的地点和日程

C.观察者应避免的偏见调查人员对被观察环境的影响

D.在观察活动中,观察者在项目拟建社区应担当适当的职责

E.观察者应重视被观察环境的对调

题型:单项选择题

发育成视网膜的为()

A.神经沟

B.中胚叶

C.神经节细胞

D.表皮外胚叶

E.神经外胚叶

题型:单项选择题

用振荡脱气装置脱气时,静置时间为()分钟。

A.10

B.20

C.25

题型:单项选择题

引进浅冷装置其氨压缩机启动后,乙二醇再生温度控制主要由()决定,操作工应想办法达到再生温度124℃。

A.加热炉

B.乙二醇泵

C.闪蒸罐

D.乙二醇储罐

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