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问题 填空题

下图是小明同学绘制的A、B两种固体物质的溶解度曲线，根据图回答有关问题。

（1）50 ℃时，两种物质的溶解度由大到小的顺序________________；

（2）50℃时，将A、B两种恰好饱和的溶液降到40℃，所得溶液溶质质量分数的关系是：A________B（填“大于”、“小于”或“等于）；

（3）40℃时将15g A物质加入50g水中，经充分溶解所形成的溶液是__________（选填“饱和”或“不饱和”）溶液。将此溶液升温至50℃，溶液的溶质质量分数__________ (填“变大”、“变小”或“不变”，假设水不蒸发)，此时需要再加入____________gA，溶液才能达到饱和。

答案

⑴ A＞B

⑵ 等于

⑶ 不饱和 ； 不变  ； 15

单项选择题

下列不属于建设工程项目总进度目标论证的工作步骤的是（）。

A．调查研究和收集资料

B．确定施工作业的具体安排

C．进行进度计划系统的结构分析

D．编制各层(各级)、进度计划
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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 Ocean Park. Without this (19) reinforcement, says Dr. Simms, children cannot form (20) memories of their personal experiences.

16（）

A.senses

B.cases

C.words

D.aspects
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