支配心脏的迷走神经节后纤维释放的递质是（） A.乙酰胆碱 B.去甲肾上腺素 C.肾上

___herself wondering whether she had made a mistake, she felt embarrassed and at a loss.

A．Catching

B．Caught

C．Being caught

D．Having been caught

题干: 远期交易收取多少保证金由交易双方商定，甚至双方可以商定不收保证金。

阅读理解。

     It doesn't come as a surprise to you to realize that it makes no difference what you read or study if you

can't remember it. You just waste your valuable time.   1   One dependable aid that does help you remember

what you study is to have a specific purpose or reason for reading.

     Why does a clerk in a store go away when your reply to her offer to help is, "No, thank you. I'm just

looking."? Both you and she know that if you aren't sure what you want, you are not likely to find it. But

suppose you say instead, "Yes, thank you.I want a pair of sun glasses." She says,"Right this way, please." 

        2   If you choose a book, "just looking" for nothing in particular, you are likely to get just that-nothing.

But if you do know what you want, you are almost sure to get it.Your reasons will vary; they will include

reading or studying"to find out more about", "to understand the reasons for" and"to find out how". 

      3   Before you start to study, you say to yourself something like this, "I want to know why Stephen

Vincent Benet happened to write about America". Because you know why you are reading or studying, you

relate the information to your purpose and remember it better. 

       4   At least two important processes go on at the same time. As you read, you take in ideas rapidly and

accurately. But at the same time you express your own ideas to yourself as you react to what you read. You

have a kind of mental conversation with the author.

     This additional process of thinking about what you read includes evaluating it, relating it to what you

already know, and using it for your own purposes.    5  One part of critical reading, as you have discovered,

is distinguishing between facts and opinions. Facts can be checked by evidence, Opinions are one's own

personal reactions.Another part of critical reading is judging sources.Still another part is drawing accurate

inferences.

A. Maybe you have already discovered some clever ways to keep yourself from forgetting.

B. It is important for students to have a positive attitude to their study.

C. You remember better when you know what you' re reading.

D. In other words, a good reader is a critical reader.

E. It's quite the same with your studying.

F. Reading is not one single activity.

G.This is the way it works.

在警察的萌芽时期，同时伴生的有监管行为、审判行为的萌芽。( )

分配内存并且响应中断的程序也可以（）。

A．将源代码转换成目标代码

B．进行输入/输出操作初始化

C．创建加载模块库

D．将虚拟视图映射到基表