怎样保持饮食营养才科学合理？

在坐标系xOy平面的第一象限内，有一个匀强磁场，磁感应强度大小恒为B₀，方向垂直于xOy平面，且随时间作周期性变化，如图所示，规定垂直xOy平面向里的磁场方向为正．一个质量为m，电荷量为q的正粒子，在t=0时刻从坐标原点以初速度v₀沿x轴正方向射入，不计重力的影响，经过一个磁场变化周期T（未确定）的时间，粒子到达第Ⅰ象限内的某点P，且速度方向仍与x轴正方向平行同向．则

（1）粒子进入磁场后做圆周运动的半径是多大？

（2）若O、P连线与x轴之间的夹角为45°，则磁场变化的周期T为多大？

（3）因P点的位置随着磁场周期的变化而变化，试求P点的纵坐标的最大值为多少？

关于合伙的特征，下列表述不正确的是（）。

A.个人合伙是两个以上公民组成的联合体

B.个人合伙是以合伙人的意思表示一致为基础

C.个人合伙的财产由合伙组织享有

D.个人合伙由合伙人共同经营管理

阅读理解。

     Psychology (心理学) has a new application in the field of medicine. Many doctors, together with their

patients, are looking for alternative methods of treatment of physical problems. In large hospitals, modern

therapy (疗法) seems to focus on the physical disease. Patients may feel they are treated like broken

machines. Some doctors have recognized this as a problem. They are now using psychological therapy, in

which the patient is working with the doctors against the disease with the help of medicine. The patient does

not wait for the medicine and treatment to cure him or her, but instead the patient joins in the fight.

     The doctor knows that a disease affects a patient's body physically. The body of the patient changes

because of the disease. He is not only physically affected, but also has an emotional response to the disease.

Because his mind is affected, his attitude and behavior change. The medical treatment might cure the patient's

physical problems, but the patient's mind must fight the emotional ones. For example, the studies of one

doctor, Carl Simonton, M. D., have shown that a typical cancer patient has predictable attitudes. She typically

feels depressed, upset, and angry. Her constant depression makes her acts unfriendly toward her family,

friends, doctors, and nurses. Such attitudes and behaviors prevent recovery. Therefore, a doctor's treatment

must help the patient change that. Simonton's method emphasizes treatment of the"whole" patient.

     The attitude of a cancer patient receiving radiation therapy, an X-ray treatment, can become more positive.

The physician who is following Simonton's psychological treatment plan suggests that the patient imagine that

he or she can see the tumor (肿瘤) in the body. In the mental picture, the patient"sees" a powerful beam of

radiation like a million bullets of energy. The patient imagines the beam hitting the tumor cells and causing

them to shrink. For another cancer patient, Dr. Simonton asks him to imagine the medicine going from the

stomach into the bloodstream and to the cancer cells. The patient imagines that the medicine is like an army

fighting the diseased cells and sees the cancer cells gradually dying and his blood carry away the dead cells.

Both the medical therapy and the patient's positive attitude fight the disease.

     Doctors are not certain why this mental therapy works. However, this use of psychology does help some

patients because their attitudes about themselves change. They become more confident because they use the

power within their own minds to help stop the disease. Another application of using the mind to help cure

disease is the use of suggestion therapy. At first, the doctor helps the patient to concentrate deeply. The

patient thinks only about one thing. He becomes so unaware of other things around him that he is asleep, or

 rather in a trance (催眠状态). Then the physician makes"a suggestion" to the patient about the medical

problem. The patient's mind responds to the suggestion even after the patient is no longer in the trance. In

this way, the patient uses his mind to help his body respond to treatment. Doctors have learned that this use

of psychology is helpful for both adults and children. For example, physicians have used suggestion to help

adults deal with the strong pain of some disease. Furthermore, sometimes the adult patient worries about her

illness so much that the anxiety keeps her from getting well. The right suggestions may help the patient to

stop being anxious. Such treatment may help the patient with a chronic(慢性的) diseases. Asthma (哮喘) is

an example of a chronic disorder. Asthma is a disease that causes the patient to have difficulty in breathing.

The patient starts to cough and sometimes has to fight to get the air that he or she needs. Psychology can

help relieve the symptoms of this disorder. After suggestion therapy, the asthma patient breathes more easily.

     Physicians have learned that the psychological method is very useful in treating children. Children respond

quickly to the treatment because they are fascinated by it. For example, Dr. Basil R. Collison has worked with

121 asthmatic children in Sydney, Australia, and had good results. Twenty-five of the children had Excellent

results. They were able to breathe more easily, and they did not need medication. Another forty-three were

also helped. The symptoms of the asthma occurred less frequently, and when they did, they were not as

strong. Most of the children also felt better about themselves. Doctors have also used suggestion to change

habits like nail-biting, thumb-sucking, and sleep-related problems.

     Many professional medical groups have accepted the medical use of psychology and that psychology has

important applications in medicine.

1. What does the passage mainly discuss?

A. How suggestion therapy benefits adults and children.

B. How modern therapy focuses on the disease.

C. Responses from the medical world.

D. How to use the mind against disease.

2. How does psychological therapy work?

A. The patient waits for the medicine and treatment to cure him.

B. The doctor uses medical treatment to cure the patient's problems.

C. The doctor, the medicine, and the patient work together to fight disease.

D. The patient uses his mind to cure himself.

3. What can we learn from the studies of Carl Simonton, M. D.?

A. The medical treatment can cure the patient's mental disease.

B. The treatment of a patient by treating the body and the mind is necessary.

C. The mental treatment is more important than medical treatment.

D. Few patients have emotional response to the disease.

4. The use of psychological therapy is helpful to some patients in that _____.

A. the medical effect is better with psychological therapy than without it

B. the patients can see a powerful beam of radiation hitting their tumor cells

C. the patients' attitudes towards themselves have changed

D. the patients are easy to accept the methods the doctors use to treat them

5. It can be learned from the passage that suggestion therapy cannot be used to _____.

A. help adults deal with the strong pain of some diseases

B. help the patients with chronic diseases

C. help change some bad habits

D. help cure patients of insomnia(失眠症) .

6. According to the passage, which of the following remains unknown so far?

A. The value of mental therapy.

B. The effectiveness of suggestion therapy.

C. The working principle of suggestion therapy.

D. The importance of psychology in medical treatment

在社区老年人外出活动结束后，社会工作者小林设计了一份调查问卷，旨在了解社区老年人参与外出活动的满意度。这份调查问卷中涉及3个问题。根据问题设计的排序原则，适宜的排序是（）。 （1）总体上看，您对社区居委会组织的老年人外出活动满意吗？ □1.非常满意□2.比较满意□3.一般□4.比较不满意□5.非常不满意 （2）对于以后社区居委会组织的老年人外出活动，您有什么具体的建议？ （3）您参加过社区居委会组织的老年人外出活动吗？ □1.参加过□2.没参加过

A.（2）（1）（3）

B.（3）（2）（1）

C.（3）（1）（2）

D.（2）（3）（1）

事实证明，自从资本市场诞生以来，股市就不是一个投资场所，______上都是投机者在博弈。股票的价格从来就没有在经济学者理论上的______价格驻足，更多的是在泡沫和负泡沫之间来回奔波。
填入划横线部分最恰当的一项是( )

A．实际 稳定
B．基本 均衡
C．事实 稳定
D．本质 均衡