具有吡嗪结构，有保钾排钠作用的药物是（） A．氢氯噻嗪 B．氯噻酮 C．乙酰唑胺 D

阅读理解。

     Searching the Internet may help middle-aged and older adults keep their memories sharp, US researchers

said. 

     Researchers at the University of California, Los Angeles, studied people doing web searches by recording

their brain activity.

     "What we saw was people who had Internet experience used more of their brain during the search," Dr.

Gary Small, a UCLA expert on aging, said, "This suggests that just searching on the Internet may train the

brain and that it may keep it active and healthy."

     "This is the first time anyone has simulated (模拟) an Internet search task while scanning the brain," Small

said. His team studied 24 normal volunteers between the ages of 55 and 76. Half were experienced at searching

the Internet and the other half had no web experience. However, the two groups were similar in age, gender

and education.

     Both groups were asked to do Internet searches and book reading tasks while their brain activity was

monitored.

     "We found that in the book reading task, the visual cortex-the part of the brain that controls reading and

language-was activated," Small said, "In doing the Internet search task, there was much greater activity, but

only in the Internet-savvy (了解) group."

     He said it appears that people who are familiar with the Internet can engage in a much deeper level of brain

activity. Activities that keep the brain engaged can preserve brain health and thinking ability. Small thinks

learning to do Internet searches may be one of those activities.

1. Researchers _____ when volunteers were doing web searches. 

A. studied the Internet

B. activated the brain

C. monitored the brain activity

D. recorded their memories

2. The two volunteer groups were _____.

A. of the same age

B. similar in education

C. good at the computer

D. book lovers

3. According to the passage, we can learn that _____.

A. searching the web keeps the brain more engaged

B. reading books keeps the brain more engaged

C. watching TV keeps the brain more engaged

D. chatting online keeps the brain more engaged

4. Which of the following is TRUE?

A. When you read, the whole brain will be activated.

B. Dr. Gary Small is a UCLA expert on brain health.

C. People who read books may have a better memory.

D. Internet searches can preserve brain health and thinking ability

5. What can we conclude from the last paragraph?

A. Web searching is good for the brain.

B. Web searching damages the brain.

C. Activities are good for the brain.

D. Activities damage the brain.

颗粒剂的特点包括

A．服用携带方便

B．吸收、奏效较快

C．表面积大，质量不稳定

D．服用剂量较小

E．制备工艺适合大生产

柴油机燃料供给系的输油泵多采用（）

A、膜片式

B、活塞式

C、齿轮式

D、电动式

根据下列资料完成36-40题　　甲公司2007年在物资采购中，有关票据方面发生如下情况：　　甲公司销售给乙公司一批货物，按合同约定如期交货，乙公司签发了一张金额为30万元的转账支票，交给甲公司。甲公司到银行提示付款时，发现该支票是空头支票。甲公司认为，对乙公司应处以罚款，并有权要求乙公司给予经济赔偿。　　甲公司某采购人员持该公司开户银行签发的，注明“现金”字样的银行本票，购置一批物资。由于该采购人员保管不慎，将银行本票丢失。随后，家公司采取了一系列的措施。

A．财政部门

B．甲公司开户银行

C．中国人民银行

D．乙公司开户银行

划分课的类型的基本依据是

A．教学原则
B．教学途径
C．教学任务
D．教学内容