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【单选题】
On a summer evening I was caught in the crossfire of dueling wood thrushes, each defending his portion of the forest. Their chosen weapons were their voices; melodies were their ammunition. Each sought to wound the other's pride, but their sweet fluting pierced only the evening silence.【71】 I doubt that the duelists saw one another, because the wood thrush is content to pour out his nocturne from the middle of a low limb draped by leaves. He needs no approving audience and can project his voice without resorting to a singing perch in the treetop. The brown-backed, speckle-breasted, eight-inch wood thrush only looks drab. All of his beauty is concentrated in his voice. Let the scarlet tanager take the prize as the forest's flashiest dresser. Among his winged brethren, the song of the wood thrush has no equal. He sings more enchantingly than any bird I know.【72】On the trail, I often find myself stopping to admire the wood thrush's gift. After wintering mainly in Mexico and Central America, wood thrushes return north to breed. The male's echoing melody challenges his rivals, wakes the raccoon and serenades the woodland sojourner. In California they don't hear wood thrushes, which in summer occur only in the eastern forest. It's enough to prevent me from moving West. 【73】While traveling in Europe, John James Audubon got homesick for 'the sweet melodious strains of that lovely recluse, my greatest favorite, the Wood Thrush.' Henry David Thoreau said, 'He touches a depth in me which no other bird's song does,' and he called the wood thrush 'a Shakespeare among birds.' Ancient magic lives on in the woods.【74】The Pilgrims must have heard it, too, and perhaps the wood thrush comforted them in their wild new world. The wood thrush's song consists of several phrases, variations on his basic ee-o-lay theme, in quality like a flute but richer, not airy. Each phrase usually concludes with a high-pitched chord. Throaty utterings audible at close range may introduce the next phrase. The song's ending is sometimes marked by a downsliding note that slows and trails off. After a pause, the song is repeated. Occasionally, the wood thrush launches into a series of sustained intonations, a haunting counterpoint to his primary song. 【75】Some are almost mechanical, others merely sweet--the inspired wood thrush sings with a certain soulfulness. He plays his fine vocal instrument with great sweetness, yet there is an undercurrent of sadness. He speaks to me of struggle and survival, of loss and rebirth, and ultimately of hope. He awakens me to the indefinable yearnings that humans and wood thrashes share.
A.
A special gene make certain wood thrushes exceptional.
B.
Lyrical, liquid and loud, his voice has beauty and depth to match nature's.
C.
There is wide variation in the singing ability of wood thrushes.
D.
I was moved, but both wood thrushes stood their ground.
E.
You can go there and hear what Audubon and Thoreau heard, the same song Native Americans heard in the virgin forest.
F.
His singular talent won this common bird the unabashed affection of two of America's foremost naturalists, an artist and a writer. (71)
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举一反三
【单选题】用DFS遍历一个无环有向图,并在DFS算法退栈返回时打印相应的顶点,则输出的顶点序列是?
A.
无序的
B.
拓扑有序
C.
逆拓扑有序
D.
以上都不对
【多选题】患者,男性,78岁,因右下肢疼痛2天收住普外科。5年前因双下肢动脉硬化性闭塞症行左下肢截肢术。既往慢性支气管炎30年,高血压病15年,糖尿病20年,冠心病10年,陈旧性心肌梗死史5年。入院诊断双下肢动脉硬化性闭塞症。入院后行右下肢截肢术。术后第二天起出现气急、胸闷,并进行性加重,伴大汗,端坐呼吸,阵阵咳嗽,咳泡沫样痰,无发热。体检:半卧位,T37℃,HR172次/分,BP170/100mmHg,面...
A.
血常规
B.
血清钾、钠、氯、钙、血糖
C.
24h动态血压
D.
心电图
E.
紧急心脏冠脉造影
F.
心脏彩色超声多普勒
G.
血培养
【多选题】患者,男性,78岁,因右下肢疼痛2天收住普外科。5年前因双下肢动脉硬化性闭塞症行左下肢截肢术。既往慢性支气管炎30年,高血压病15年,糖尿病20年,冠心病10年,陈旧性心肌梗死史5年。入院诊断双下肢动脉硬化性闭塞症。入院后行右下肢截肢术。术后第二天起出现气急、胸闷,并进行性加重,伴大汗,端坐呼吸,阵阵咳嗽,咳泡沫样痰,无发热。体检:半卧位,T37℃,HR172次/分,BP170/100mmHg,面...
A.
心电监测
B.
开通两路静脉,快速补液
C.
持续监测中心静脉压、肺楔嵌压和有创动脉血压
D.
呋塞米20mg静脉推注
E.
输注浓缩红细胞4U
F.
硝酸甘油静脉滴注,从10μg/min开始
G.
吗啡3mg静脉反推注
H.
毛花苷丙针0.6mg静脉缓慢推注
I.
应用20%甘露醇利尿
J.
氨茶碱针0.25mg静脉缓慢推注(15-30分钟注完)
【单选题】( )是在启动AD转换后,延时一段时间,等待转换完成,就可以读取AD转换的数据。
A.
查询方式
B.
定时方式
C.
中断方式
【单选题】用DFS遍历一个无环有向图,并在DFS算法退栈返回时打印相应的顶点,则输出的顶点序列是( )。
A.
逆拓扑有序
B.
拓扑有序
C.
无序的
D.
不确定
【多选题】患者,男性,78岁,因右下肢疼痛2天收住普外科。5年前因双下肢动脉硬化性闭塞症行左下肢截肢术。既往慢性支气管炎30年,高血压病15年,糖尿病20年,冠心病10年,陈旧性心肌梗死史5年。入院诊断双下肢动脉硬化性闭塞症。入院后行右下肢截肢术。术后第二天起出现气急、胸闷,并进行性加重,伴大汗,端坐呼吸,阵阵咳嗽,咳泡沫样痰,无发热。体检:半卧位,T37℃,HR172次/分,BP170/100mmHg,面...
A.
心电监测
B.
开通两路静脉,快速补液
C.
持续监测中心静脉压、肺楔嵌压和有创动脉血压
D.
呋塞米20mg静脉推注
E.
输注浓缩红细胞4U
F.
硝酸甘油静脉滴注,从10μg/min开始
G.
吗啡3mg静脉反推注
【单选题】( )是在启动AD转换后,延时一段时间等待转换完成,然后读取AD转换的数据。
A.
查询方式
B.
定时方式
C.
中断方式
【简答题】应用写作能力需要注意哪几个方面。
【单选题】用DFS遍历一个无环有向图,并在DFS算法退栈返回时打印出相应的顶点,则输出的顶点序列是()。
A.
逆拓朴有序的
B.
拓朴有序的
C.
无序的
D.
不确定的
【简答题】焊接过程中常见的气孔有哪些?如何控制?
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