抢救心跳、呼吸骤停者，应首先 A．气道通畅 B．口对口吹气 C．胸外心脏按压 D

某市农村地区欲开展5岁以下儿童“预防肠道感染性疾病健康教育干预”项目，健康教育工作者在项目计划书中提出以下一些项目干预目标，其中属于总体目标的是

A．一年内儿童照料者备餐前洗手率提高25%

B．一年内使目标社区五岁以下儿童感染性腹泻发生率降低

C．半年内儿童照料者关于肠道感染性疾病对儿童健康威胁严重性的认识正确率提高30%

D．半年内儿童照料者关于儿童肠道感染性疾病易感性的认识正确率提高 30%

E．以上都不是

男性，32岁，反复腹泻伴左下腹阵痛2年，发作时大便每日4次，常为黏液脓血便，时有里急后重，呈疼痛一便意一便后缓解的规律，无发热。近日结肠镜检查示黏膜弥漫性充血、水肿，粗糙呈细颗粒状。目前，最可能的诊断是

A．肠易激综合征

B．克罗恩病

C．阿米巴肠炎

D．溃疡性结肠炎

电力晶体管在使用时，要防止（）。

A、二次击穿

B、静电击穿

C、时间久而失效

D、工作在开关状态

男性，70岁，慢性咳嗽、咳痰20余年，每年持续3～4个月，近2～3年出现活动后气短，有时双下肢水肿。今日晨起突感左上胸针刺样疼痛，与呼吸有关，继之出现呼吸困难、大汗，不能平卧，来院就诊。

询问病史的重点应是（）

A.胸痛的部位、性质及伴随症状

B.冠心病、心绞痛病史

C.吸烟史

D.近期心电图检查情况

E.近期胸部X线检查情况

Analysts have their go at humor, and I have read some of this interpretative literature, (1) without being greatly instructed. Humor can be (2) , (3) a frog can, but the thing dies in the process and the innards are (4) to any but the pure scientific mind.

One of the things (5) said about humorists is that they are really very sad ’people clowns with a breaking heart. There is some truth in it, but it is badly (6) . It would be more (7) , I think, to say that there is a deep vein of melancholy running through everyone’s life and that the humorist, perhaps more (8) of it than some others, compensates for it actively and (9) Humorists fatten on troubles. They have always made trouble (10) They struggle along with a good will and endure pain (11) , knowing how well it will (12) them in the sweet by and by. You find them wrestling with foreign languages, fighting folding ironing hoards and’ swollen drainpipes, suffering the terrible (13) of tight boots. They pour out their sorrows profitably, in a (14) of what is not quite fiction nor quite fact either. Beneath the sparking surface of these dilemmas flows the p (15) of human woe.

Practically everyone is a manic depressive of sorts, with his up moments and his down moments, and you certainly don’t have to be a humorist to (16) the sadness of situation and mood. But there is often a rather fine line between laughing and crying, and if a humorous piece of writing brings a person to the point (17) his emotional responses are untrustworthy and seem likely to break over into the opposite realm, it is (18) humor, like poetry, has an extra content, it plays (19) to the big hot fire which is Truth, and sometimes the reader feels the (20) .

15（）

A.tide

B.drift

C.float

D.flare