影响局麻药在硬外腔扩散的因素有() A.局麻药的容积和浓度 B.局麻药注射的速度 C

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问题:

影响局麻药在硬外腔扩散的因素有()

A.局麻药的容积和浓度

B.局麻药注射的速度

C.年龄

D.身高

E.脑脊液压力

考点:广东住院医师麻醉学广东住院医师麻醉学模拟试卷十
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某DNA分子共有a个碱基,其中含胞嘧啶m个,则该DNA分子复制3次,需要游离的胸腺嘧啶核苷酸数为[ ]

A.7(a-m)

B.8(a-m)

C.7(a/2-m)

D.8(2a-m)

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下列化学实验基本操作正确的是[ ]

A.把橡皮塞慢慢转动着塞进容器口

B.向燃着的酒精灯里添加酒精

C.滴瓶上的滴管用过后,先用水洗净再放回滴瓶

D.组装仪器时,一般循环的原则是:从左到右,先上后下

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Like a backward tape, time returns to my mom's teens.She is waiting for admission results from a famous high school.She has studied for the test but with joy, since she feels no suffering in learning.Suddenly I spy her jumping and laughing, waving a paper in her hand while her family stands nearby, more shocked than happy.No one else from their village has ever passed the test.

Later, at her new high school, I proudly watch as she continues to rise to the top.Many of her essays are published in newspapers, and her classmates seek her advice when a test is approaching. She never refuses them, and I feel honored to be related to such an intelligent person.

As I walk with her through her journey, I finally come to the point I have been looking forward to most: her life in America. After passing several tests and finding a kind boss to sponsor her, she becomes a college student at University of California, Los Angeles. At first, I sense her loneliness and panic as she tries to adapt to her new surroundings.Though her English is broken and she knows little about American culture, I can tell she is more than grateful to be here. Here she has access to electricity and running water, and most importantly, better schools. At UCLA, she has so many opportunities to grow and advance in her field.

Her journey to America was for just one reason: education.Though having an education will better her life, I know she doesn't do it for herself.My mom wants her children to have an easier life that will not require hard labor.I see what my mom goes through, and I'm filled with gratitude that she has made the brave choice to move here.

小题1:According to the first paragraph, the writer's mother considers learning to be        .

A.easy and joyful

B.bitter but rewarding

C.costly and boring

D.exciting but fruitless小题2:Which of the following does the writer's mother do at high school?

A.Working as a newspaper deliverer.

B.Feeling proud of her intelligence.

C.Working hard to be honored and awarded.

D.Giving her classmates advice before tests.小题3:How does the writer's mother pay for her college education?

A.By doing a part-time job.

B.By asking her parents for support.

C.With the financial support from a kind boss.

D.With the help from her teachers and classmates.小题4:What is the final aim of the writer's mother's going to America?

A.To accumulate wealth.

B.To benefit her children.

C.To make her parents live better.

D.To become famous in her field of study.

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部落的二重性是()。

A、血缘关系

B、地域关系

C、人们共同体形式

D、原始社会的社会组织形式

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在测量中磁子午线北端方向以东偏为负,西偏为正。

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