理性预期学派认为宏观经济政策( )。A．基本无效 B．只能对付意外的经济冲击 C．

根据短文内容及首字母提示，填写所缺单词。

         Maybe you are more interested in sports than in history. You probably think you will never be a top

student. In f      1       , anyone can become a better student if he or she wants to. If you can use your time

well, you may improve your study w     2       much work. Here's how:

        Plan your time carefully. When you plan your week time, you should make a l    3      of things that

you have to do. First write down the time for eating, sleeping, dressing, etc. Then decide on a good time for

studying. Of course, studying shouldn't take all of your time. Don't forget to leave yourself enough t    4      

for hobbies.

        Find a good place to study. Look around the house f      5        a good study place. Keep this space,

which may be a desk o    6     just a corner of your room. No games, radio, or television! When you sit down

to work, think only about the subject!

        Make good use of your time in class. Listen c      7       to what the teacher says. Careful listening in

class means less work later. You also need to take notes in class, because it can m      8      it easier for you to

learn well.     

        There are only a few ways mentioned here to h      9      you with your studying. I believe you find

s     10     other ways besides these.

计算机病毒以多种手段入侵和攻击计算机信息系统，下面有一种不被使用的手段是：

A．分布式攻击、恶意代码攻击
B．恶意代码攻击、消息收集攻击
C．删除操作系统文件、关闭计算机系统
D．代码漏洞攻击、欺骗和会话劫持攻击

压油的污染源有（）、（）、（）三个途径，根据污染来源采取防治措施。

病人认真讲了一番话，但周围的医师们都不理解他要说明什么问题，该症状为

A．思维贫乏
B．思维散漫
C．思维迟缓
D．思维被夺取
E．思维被插入

精馏塔塔顶物料经冷凝冷却后返回塔内的部分称为（）。

A、回流比

B、回流

C、塔顶产品

D、气相冷凝液