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问题 单项选择题

500kY、110kV架空电力线走廊宽度分别为( )m和( )m。

A．60～75；15～25

B．50～60；15～30

C．60～75；15～25

D．50～60；15～25

答案

参考答案：A

单项选择题

关于体液电解质测定时，错误的()

A．全血不能用于电解质测定

B．血清和血浆、动脉血与静脉血之间的电解质之间有一定差异

C．血清和血浆K+之间差异具有临床意义

D．用血浆或全血测定电解质时要用肝素锂或氨盐抗凝

E．用血浆或全血测定电解质的好处在于不用等待血凝固而缩短了检测时间
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单项选择题

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 Oceanz 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。

（19）（）

A.habitual

B.verbal

C.unique

D.particular
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