一根长为1米的细木棒,按其上任意两点折断,折断后的三小段能构成三角形的三边的概率

题型:选择题

问题:

一根长为1米的细木棒,按其上任意两点折断,折断后的三小段能构成三角形的三边的概率是(  )
A.
1
4
B.
1
2
C.
3
4
D.
1
8
考点:随机事件及其概率
题型:选择题

冬青栽培时,雄株比例及雌雄株株距应为()。

A.15%;15m

B.15%;30m

C.30%;15m

D.30%;30m

题型:选择题

尿中哪项指标增高标志着肾小球严重病变()

A.Alb

B.IgG

C.IgA

D.IgM

E.β2-M

题型:选择题

运输服务质量是指:服务满足明确和隐含要求的功能、特性之总和。为提高服务质量,应采用统一的标准来衡量和检测。

题型:选择题

关于似蚓蛔线虫和钩虫,下列说法正确的是()

A.均经皮肤感染

B.均经口感染

C.均经肺部移行

D.以宿主肠内容为食

E.寄生在大肠

题型:选择题

What’s your earliest childhood memory Can you remember learning to walk Or talk The first time you heard thunder or watched a television program Adults seldom (1) events much earlier than the year or so before entering school, (2) children younger than three or four (3) retain any specific, personal experiences.

A variety of explanations have been (4) by psychologists for this "childhood amnesia". One argues that the hippo-campus; the region of the brain which is (5) for forming memories, does not mature until about the age of two. But the most popular theory (6) that, since adults don’t think like children, they cannot (7) childhood memories. Adults think in words, and their life memories are like stories or (8) one event follows (9) as in a novel or film. But when they search through their mental (10) for early childhood memories to add to this verbal life story, they don’t find any that fit the (11) . It’s like trying to find a Chinese word in an English dictionary.

Now psychologist Annette Simms of the New York State University offers a new (12) for childhood amnesia. She argues that there simply aren’t any early childhood memories to (13) . According to Dr. Simms, children need to learn to use someone else’s spoken description of their personal (14) in order to turn their own short-term, quickly forgotten (15) of them into long-term memories. In other (16) , children have to talk about their experiences and hear others talk about (17) --Mother talking about the afternoon (18) looking for seashells at the beach or Dad asking them about their day at Ocean Park. Without this (19) reinforcement, says Dr. Simms, children cannot form (20) memories of their personal experiences.

Notes: childhood amnesia 儿童失忆症。

1()

A.figure

B.interpret

C.recall

D.affirm

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