问题 单项选择题

地面测距设备规定的脉冲间隔的公差(容限)为()。

A.3.5微秒

B.0.5微秒

C.1微秒

D.0.25微秒

答案

参考答案:D

单项选择题 案例分析题

一般资料:求助者,女性,16岁,某中学高一年级学生。案例介绍:求助者自幼生长在农村,半年前考入市里的中学。学校的教室和宿舍都在楼房里,求助者第一次在窗边站立时非常害怕。有一次和同学参观电视塔,求助者站在嘹望平台上内心极其恐惧,出现胸闷、心慌、全身发抖、手脚出冷汗等症状,几乎瘫坐在地上。从此以后求助者不敢在窗边站立,不敢到楼顶晒被子。学校为了保护学生视力,一定时间后就要轮换座位,求助者轮到自己到窗边时,无论如何都要找老师要求换座位。求助者自己也明明知道坐在窗边不会掉下去,实际上没有什么好怕的,也曾逼着自己站在窗边,但最终都因害怕而失败。后来甚至不敢和同学去看电影,到商店购物。求助者恨自己胆小,担心今后的学业与生活,内心非常痛苦。求助者现在无法安心学习,情绪很低落,甚至想回到农村学校去,但又不甘心失去在市里的学习机会,迫切要求解决"恐惧"的问题,摆脱痛苦,在老师陪同下前来咨询。心理咨询师观察了解到的情况:求助者家在农村,从小懂事听话,胆小怕事,性格内向,学习勤奋,人际关系良好。求助者在操场上和一楼餐厅里感觉良好。

实施系统脱敏时,正确的顺序是()。

A.刺激从小到大递增

B.不同等级交替进行

C.刺激从大到小递减

D.不必考虑脱敏顺序

阅读理解

AIDS’ Threat to Asia Grows

NEW DELHI----Just a few years ago, Mala was a typical middle-class Indian housewife. She cooked, cleaned and looked after her two small children.

Last year, her life took a tragic turn. Her husband died of AIDS; she was found out HIV-positive and her mother-in-law took her children away from her, saying they would get the disease. “When friends dropped for a visit, she would introduce me, saying, ‘She is my son’s widow. She has AIDS,’” said Mala. AIDS is now described as “explosive(炸药)” around the world. A study of a hospital in the port city of Durban in South Africa, where the world’s biggest and Africa’s second AIDS conference opened last Sunday, found that almost half the beds in medical wards (病房) were occupied by AIDS patients.

South Africa has one of the world’s fastest growing HIV infections, with 1,700 people infected daily, adding to the 4.3 million, or 10 percent of its population, living with HIV. Until now, Asia has been more successful in holding the AIDS virus than Africa, where the disease has killed about 12 million people.

AIDS is now threatening to surround many of Asia’s poverty-stricken countries. Countries in Asia, such as Cambodia, and Thailand, have HIV infection speeds over 1 percent. But the low speeds hide huge numbers of infected people, because of the population base.

In India, for example, 3.7 million are infected, more than in any other country except South Africa. In China, an estimated 860,000 people (the actual number may be a little larger), mainly drug users, live with HIV/AIDS. Gordon Alexander, a senior advisor for UN AIDS in India, estimates that the number hit by AIDS in Asia will climb about eight million over the next five years from about six million.

In many Asian countries, the battle against HIV is a social and cultural one against public discussion of sexual health put a nationwide media campaign into action to limit the speed of HIV through unsafe sex. Brenton Wong, an official for Singapore’s Action for AIDS, says the actual HIV incidence in the city state of 3.9 million people is at least eight times higher than official data. “Shame and deny is still very, very common so people are afraid to get tested and many times won’t even tell their families if they test positive,” said Wong.

小题1:We can conclude from the underlined sentence in the last paragraph that ______.

A.The official data always tell lies and cheat people to hide the truth.

B.3.9 million people in Singapore suffered from AIDS.

C.Singapore has a population of 3.9 million

D.The number of people infected with HIV is at least eight times larger than that of the AIDS patients in Singapore.小题2:It is judged that there are ______ people hit by AIDS in Asia or so.

A.4.3 million

B.6 million

C.8 million

D.3.7 million小题3:According to the passage, the main reasons that AIDS spread in Asia is through_______. 

A. blood

B.unsafe sex

C.love

D.drugs小题4:Which of the following statements is not right?     

A.The battle against Aids in many Asian countries is against their culture and

social customs.

B.Though the HIV infection in Asia develops with low speed, the infected number

is still quite large compared to other continents.

C.India has the second largest number of HIV infected people.

D.Aids might affect the poverty-stricken countries more severely.