下列说法正确的是( ) A．数据是数据元素的基本单位 B．数据元素是数据项中不可分

在电场中把一个正电荷从A点移到B点，静电力做功1.5×10^-7J，再把这个电荷从B点移到C点，静电力做功-4.0×10^-7J，则A、B、C三点的电势高低关系为（　　）

A．φ_A＞φ_B＞φ_C

B．φ_A＜φ_C＜φ_B

C．φ_C＞φ_A＞φ_B

D．φ_C＞φ_B＞φ_A

10个月男婴，人工喂养（为羊乳6个月后糊，但未加肉类），面色苍白3个月，近1周嗜睡，食欲差。查体：虚胖，头发稀疏、微黄，面色苍黄，巩膜轻度黄染，肝肋下0.5cm，脾未触及。

最佳治疗是（）

A.口服二价铁

B.口服三价铁

C.注射铁剂

D.注射叶酸

E.注射维生素B并口服叶酸

阅读理解。

     For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner.

Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the

line between what I control and what you do?

     Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither

is willing to admit any responsibility for starting it. From the parents' point of view, the only cause of their fight

is their adolescents' complete unreasonableness. And of course, the teens see it in exactly the same way, except

oppositely. Both feel trapped.

     In this article, I'll describe three no-win situations that commonly arise between teens and parents and then

suggest some ways out of the trap. The first no-win situation is quarrels over unimportant things. Examples

include the color of the teen's hair, the cleanliness of the bedroom, the preferred style of clothing, the child's

failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends.

     Second, blaming. The goal of a blaming battle is to make the other admit that his bad attitude is the reason

why everything goes wrong. Third, needing to be right. It doesn't matter what the topic is-politics, the laws of

physics, or the proper way to break an egg-the point of these arguments is to prove that you are right and the

other person is wrong, for both wish to be considered an authority-someone who actually knows something-and

therefore to command respect. Unfortunately, as long as parents and teens continue to assume that they know

more than the other, they'll continue to fight these battles forever and never make any real progress.

1. Why does the author compare the parent-teen war to a border conflict? [ ]

A. Both can continue for generations.

B. Both are about where to draw the line.

C. Neither has any clear winner.

D. Neither can be put to an end.

2. What does the underlined part in Paragraph 2 mean? [ ]

A. The teens blame their parents for starting the conflict.

B. The teens agree with their parents on the cause of the conflict.

C. The teens accuse their parents of misleading them.

D. The teens tend to have a full understanding of their parents.

3. Parents and teens want to be right because they want to _____. [ ]

A. give orders to the other

B. know more than the other

C. gain respect from the other

D. get the other to behave properly

4. What will the author most probably discuss in the paragraph that follows?[ ]

A. Causes for the parent-teen conflicts.

B. Examples of the parent-teen war.

C. Solutions for the parent-teen problems.

D. Future of the parent-teen relationship.

女性，69岁。有高血压史10余年，平时坚持服用抗高血压药物。入院前6h在看电视时突然感右上下肢麻木、乏力、说话口齿不清、口水外流、头痛，呕吐1次后呈嗜睡状态，送入急诊。入院时BP26／14kPa（195／105mmHg）。

当诊断明确后，此时最合适的处理是（）

A.降颅压药物应用

B.扩血管药物应用

C.降血糖药物应用

D.降脂药物应用

E.抗菌药物应用

简述什么是劳动力管理系统？