以下哪项不是动脉导管未闭的常见症状 A.气促、咳嗽 B.乏力、多汗 C.心悸 D.声

题型:单项选择题

问题:

以下哪项不是动脉导管未闭的常见症状

A.气促、咳嗽
B.乏力、多汗
C.心悸
D.声音嘶哑
E.缺氧发作

考点:卫生资格考试(中初级)儿科主治医师血液系统疾病(二)
题型:单项选择题

2000年,经国务院批准,江 * * 签署,国家科学技术奖励委员会授予中国工程院院士袁隆平国家最高科学技术奖。他的主要成就是[ ]

A.培育出克隆羊“多莉”

B.研制出水稻基因组框架

C.培育出杂交水稻

D.与其他国家的科技人员一起制定了人类基因组计划

题型:单项选择题

“育才”中学的物理兴趣小组想探究抛出的小球从抛出到落地的时间与哪些因素有关,大家经过讨论,提出了以下猜想:

①猜想1:小球从抛出到落地的时间,可能与小球水平射出的速度有关.

②猜想2;小球从抛出到落地的时间.可能与小球下落的高度有关.为了检验上述猜想是否正确,他们找来精密计时器,一个可将小球在任意所需速度射出的弹射器,并将弹射器水平固定在铁架台上,按图所示进行实验,得到下列数据,

      

请你通过分析,回答下列问题

(1)为验证猜想①,应选用序号___、___.

为验证猜想②,应选用序号___、___.

(2)实验结论:小球从抛出到落地的时间与________________有关 .

(3)由这次活动中,你还能提出几个探究课题吗?

题型:单项选择题

妇女泌尿等梗阻常见原因是

A.结石,损伤,肿瘤或结核
B.盆腔内疾病
C.先天性畸形
D.前列腺增生症
E.包皮过长

题型:单项选择题
While watching the Olympics the other night, I came across an incredible(难以置信的) sight. The  36  was swimming and started with only three men. For one reason or another, two of them had a 37 start, so they were disqualified. That would have been difficult enough, not having anyone to  38 against.
I watched the man  39  off the blocks and knew immediately that something was wrong. Now I’m not an expert  40  but I do know a good dive 41 a poor one, and this was not exactly medal  42  . I listened to the crowd begin to  43 this poor man that was clearly having a  44  time. Finally he made his turn to start back. It was 45  he made a few desperate(拼命的) stroke(划水) and you could tell he was exhausted.
But in those few  46 strokes, the crowd had changed. No longer were they laughing, but beginning to  47 . Some even began to  48  things like, “Come on, you can do it!” and he 49  finished his race. The crowd went  50 . Even though he recorded one of the  51 times in Olympic history, this man gave more heart than any of the other 52 .
In a competition where athletes remove their silver medals, feeling they have  53 been cheated out of gold, or when they act so  54  in front of their competitors, it is nice to watch an underdog(败者), a man that gave his all --- knowing that he had no chance, but competed because of his  55  and the spirit of the games.
小题1:
A.viewB.eventC.gameD.match
小题2:
A.falseB.nervousC.strangeD.violent
小题3:
A.fightB.struggleC.defendD.race
小题4:
A.setB.bounceC.diveD.fall
小题5:
A.swimmerB.coachC.judgeD.adviser
小题6:
A.fromB.inC.beyondD.between
小题7:
A.featureB.qualityC.exampleD.sign
小题8:
A.break offB.stand byC.laugh atD.focus on
小题9:
A.happyB.wonderfulC.satisfyingD.tough
小题10:
A.hopefulB.pitifulC.boringD.skillful
小题11:
A.intellectualB.smartC.awkwardD.excellent
小题12:
A.supportB.quitC.cheerD.hesitate
小题13:
A.speakB.presentC.concludeD.yell
小题14:
A.eventuallyB.hardlyC.successfulD.nearly
小题15:
A.wildB.angryC.sadD.grey
小题16:
A.fastestB.luckiestC.worstD.slowest
小题17:
A.companionB.competitorsC.volunteersD.partners
小题18:
A.somehowB.alreadyC.evenD.anyway
小题19:
A.poorlyB.carelesslyC.sharplyD.proudly
小题20:
A.advantageB.independenceC.determinationD.principle
题型:单项选择题

(汉)盐铁论·水早》中说:“农,天下之太业也;铁器,民之大用也。器用便利,则用力少而得作多。农夫乐事劝功。”下列有关汉代农业与铁器关系的表述正确的是()

A.铁器用于农业始于汉代

B.铁器的使用使农业开始成为“天下之大业”

C.铁器的普遍使用促进了当时的农业生产

D.汉代农业生产完全依靠铁制农具

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