问题 单项选择题 A1/A2型题

除二尖瓣狭窄外,下述哪一项疾病可出现舒张期隆隆样杂音()。

A.左心房黏液瘤

B.主动脉关闭不全

C.重度贫血

D.发热

E.二尖瓣脱垂

答案

参考答案:A

解析:左心房黏液瘤起源于房间隔卵圆孔,大多有蒂,它可以阻塞二尖瓣口,可引起心尖区舒张期隆隆样杂音。其临床特点是发作性,心脏杂音随体位变化,多见于女性,有时可有发热,血沉增快,劳力性气急,晕厥等;亦可因阻塞二尖瓣的关闭而产生收缩期杂音,超声心动图可确诊。

选择题
完形填空

Many people find that regular physical activity gives them an unexpected benefit.They sleep better and wake up feeling more__61 ,in part due to increased

amounts of deep sleep. Deep sleep may play a role in the body restoring(恢)itself__62,as opposed to REM(rapid eye movement) or dreaming sleep. Researchers have found that physical exercise, especially__63 in the afternoon orearly evening,produces more__64 early in the night.

__65can also help you get a better night's sleep in a number of indirect ways. The relaxation and tiredness __66by exercise can improve sleep.

Exercise encourages weight loss and also may __67 depression. Exercising later in the day can also help delay the __68 drop in your body's temperature. The __69  of exercise are especially important for older people, __70 exercise has been shown to increase the amount of sleep senior adults get in a night and reduce the time it takes to fall asleep. But be sure you finish exercising at least 4 hours before bedtime—working out later than that could leave you too excited to fall asleep easily.

61.A. conscious      B. peaceful      C. effective      D. refreshed

62.A. physically     B. mentally      C. emotionally    D. regularly

63.A. made           B. done          C. functioned     D. conducted

64.A. night's sleep     B. dreaming sleep   C. deep sleep       D. REM

65.A. Exercise       B. Dreams        C. Researchers    D. Doctors

66.A. recovered      B. strengthened  C. caused         D. reduced

67.A. increase       B. relieve       C. release        D. arouse

68.A. nighttime      B. daytime       C. dinnertime     D. lifetime

69.A. disadvantages  B. benefits      C. ways           D. places

70.A. yet            B. if            C. when           D. Since