2015/11/20_03 SAS Basic Concepts题目，共同学习讨论。

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Question 1：
  Which of the following is always produced when a SAS program excutes?
A a log that contains messages about the program
B procedure output
C an interactive window

思考下，答案来了。。。。。。
   A Correct---SAS programs always produce a log.Depending on the program submitted,it can also produce output or open a window.
   B Incorrect---SAS program don't necessarily produce procedure output,althought many do.Some programs only produce messages in the log or take you to an interactive window.
   C Incorrect---Many SAS programs produce results in the form of messages in the log or procedure output,without taking you to an interactive window.

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关键词：Concepts concept Basic 共同学习 once following procedure produced programs always

Question 2:
Which of the following statements is false?
A Every SAS data set is stored in a SAS library
B A SAS library is a collection of SAS files and other software files
C SAS libraries can contain different types of SAS files

思考下，答案。。。。。
   A This statement is ture.All SAS data sets are stored in a SAS library.
   B This statement is false.A SAS library is a collection of SAS files only.
   C This statement is ture.SAS libraries can store any type of SAS file.