简述学习动机的分类。

带环怀孕怎么办？

以下不属于H₁受体拮抗剂的是（）。

A.氯苯那敏（扑尔敏）

B.赛庚啶

C.非那根

D.甲氰咪胍

某8岁男孩，一年来时有阵发性腹痛，在脐周部位，多在空腹时发作，食后稍减，食欲不振。面色萎黄，有白斑，形体消瘦，唇内有颗粒样大小白点，舌体有红色刺点，舌苔薄腻。如果患儿突然出现胃脘及胁下钻绞样剧痛，呕吐频作，腹部膨胀，痛处拒按，面青肢厥，此时应诊断为（）

A.肠痈

B.食滞腹痛

C.胃脘痛

D.血瘀腹痛

E.蛔厥症

阅读理解。

     For a while, my neighborhood was taken ever by an army of joggers (慢跑的人). They were there all

the time: early morning, noon, and evening. There were little old ladies in gray sweats, young couples in

Adidas shoes, middle-aged men with red faces. "Come on!" My friend Alex encouraged me to join him as

he jogged by my house every evening. "You'll feel great."

     Well, I had nothing against feeling great and if Alex could jog every day, anyone could. So I took up

jogging seriously and gave it a good two months of my life, and not a day more. Based on my experience,

jogging is the most overvalued form of exercise around, and judging from the number of the people who

left our neighborhood jogging army. I'm not alone in my opinion.

     First of all, jogging is very hard on the body. Your legs and feet a real pounding (沉重的脚步) ruining

down a road for two or three miles. I developed foot, leg, and back problems. Then I read about a nationally

famous jogger who died of a heart attack while jogging, and I had something else to worry about. Jogging

doesn't kill hundreds of people, but if you have any physical weaknesses, jogging will surely bring them out,

as they did with me.

     Secondly, I got no enjoyment out of jogging. Putting one foot in front of the other for forty-five minutes

isn't my idea of fun. Jogging is also a lonely pastime. Some joggers say, "I love being out there with just my

thoughts" Well, my thoughts began to bore me, and most of them were on how much my legs hurt.

     And how could I enjoy something that brought me pain? And that wasn't just the first week-it was

practically every day for two months. I never got past the pain level, and pain isn't fun. What a cruel way to

do it! So many other exercises, including walking, lead to almost the same results painlessly, so why jog?

     I don't jog any more, and I don't think I ever will. I'm walking two miles three times a week at a fast

pace, and that feels good. I bicycle to work when the weather is good. I'm getting exercise, and I'm enjoying

it at the same time. I could never say the same for jogging, and I've found a lot of better ways to stay in shape.

1. From the first paragraph, we learn that in the writer's neighborhood ______.

A. jogging became very popular

B. people jogged only during the daytime

C. Alex organized an army of joggers

D. jogging provided a chance to get together

2. The underlined word "them" (Paragraph 3) most probably refers to _____.

A. heart attacks

B. back problems

C. hundreds of people

D. physical weaknesses

3. From the writer's experience, we can conclude that______.

A. jogging can help people keep fit

B. many physical problems result from jogging

C. not everyone enjoys jogging

D. jogging makes people feel greater

为生活消费需要购买、使用商品或者接受服务的人被称之为（）。

A、消费者

B、劳动者

C、志愿者

D、生产者