热腾腾的JJ出炉，基本上都是70题里的和变种题，有几题记得很清楚，一定要跟大家分享，大家多翻一翻最近的JJ，我的是在他们的基础上没有人提过的：
1. 关于year cutoff那题， 我后面有d, 所以我选了missing没有选2060.  如果有人有不同意见欢迎讨论  
yearcutoff=1970;
Date='01jan60'd;
Year=year(date);


2. 竟然记住全部了！鸡蛋没白吃
data test1;
set test2 end=eof;
input var1;
var1=eof;
run;
问var1值是多少？ 答案1

3. 关于_ERROR_
如果选项里有The _ERROR_ variable can be used in expressions or calculations in the DATA step. 那么一定选这个
我遇到的不是的，是The _ERROR_ variable can only be used in expressions in the DATA step. 所以没选
选的类似这个 _ERROR_ signals the occurrence of an error that is caused by the data during execution. （这句是书上的）我的那个是有contain的。还有一个选项跟这个很像但是是maintain ，大家去翻翻书把定义巩固一下

4. 这题大家一定要记住！ 要不上场看到死磕C跟D，像我一样
data WORK.NEW;
set WORK.OLD;
Count+1;
run;
The varaible Count is created using a sum statement. Which statement regarding this variable is
true?
A. It is assigned a value 0 when the data step begins execution.
B. It is assigned a value of missing when the data step begins execution.
C. It is assigned a value 0 at compile time.
D. It is assigned a value of missing at compile time.
Answer: C

好了，基本上就是这么多了，谢谢论坛的小伙伴的分享，马上继续准备考ADV. 请赐我力量与运气吧！大家的金币都要用在刀刃上，就不麻烦大家了，喜欢的就回个赞呗