黄芩提取物对以下药物有增效作用（） A.顺铂 B.阿霉素 C.佛尿嘧啶 D.维生素C

在如图所示的电路中，电源电压不变。闭合电键K，电路正常工作。过了一会儿，其中某个电表的示数变大，则该电路中出现的故障和现象可能是

A．电压表示数变小，电阻R发生断路，灯不发光

B．电压表示数变小，电阻R发生短路，灯变亮

C．电流表示数变小，电阻R发生短路，灯不发光

D．电流表示数变小，电阻R发生断路，灯变暗但仍发光

阅读理解

     A bad Working Memory-the brain's temporary storage box-may explain,   new research suggests,  

why one child cannot read his or her history book and another gets lost in math. As many as 10 percent

of schoolage children may suffer from poor working memory. British researchers said in a report last

week,   yet the problem is rarely identified.

     "You can think of working memory as a pure measure of your child's potential. Many psychologists

consider working memory to be the new IQ (智商),   because we find that working memory is one of

the most important predictors of learning ability,   " said Dr. Tracey Alloway of Britain's Durham

University.

     Many children with poor working memory are considered lazy or dull. Working memory allows people

to hold in their minds and deal with a few items,   such as telephone numbers,   over a short period of

time. Alloway compares working memory to a box. For adults,   the basic box size is thought to be three

to five items. It's important,   therefore,   to put in the right things. Irrelevant (不相关的) information will

clutter (混乱) working memory.

     The question many researchers are struggling with is how to help children with this problem,   which

appears to be closely related to a lack of attention.

     "In children with learning difficulties,   it becomes a huge issue,   especially around middle school,  

when the demands on working memory really grow,   " said Dr. Mel Levine,   cofounder of All Kinds

of Minds,   a nonprofit organization in North Carolina that studies learning difficulties.

     Memory training may help improve working memory. Alloway has a tool that allows teachers to

assess (评定) the workingmemory capacity of children as young as 4； it has been used in 35 schools

across Britain.

     Levine's organization trains teachers through a program called Schools Attuned,   which is working

with several thousand schools across the United States,   Canada and Europe. While he is not sure

working memory can be expanded,   Levine said children can be taught ways to do better in school.

1. Which of the following is a characteristic of working memory?

A. It has a limited capacity.

B. It is usually better in children than adults.

C. It improves with use.

D. It can cause a lack of attention.

2. According to the new research,   ________.

A. the importance of working memory has been long recognized

B. working memory is becoming recognized as a factor in intelligence

C. laziness can weaken working memory

D. working memory helps people remember things forever

3. Which of the following may help improve a child's working memory?

A. Expanding the brain's storage box.

B. Remembering more things.

C. Training the memory.

D. Being reminded frequently.

4. According to the passage,   Dr. Mel Levine has ________.

A. invented tools to help improve a child's working memory

B. founded an organization to train teachers to help students with this problem

C. identified the problem clearly

D. compared working memory to a box

油墨的选择要点是什么？（）

A、承印材的种类

B、用途

C、价格

D、印刷效果

成语：“以介眉寿”出自《诗经·豳风·七月》中的哪一句？

思维过程可概括为（）等过程。

A、分析与综合

B、比较与分类

C、具体化与系统化

D、抽象与概括

E、判断与推理