[单项选择]The construct　　　　　Cobegin　　　　　　　　Statement1;　　　　　　　　Statement2;　　　　　Coend　　means Statement1 and Statement2 are to be executed in parallel. The only two atomic actions in this construct are loading the value of a variable and storing into a variable. For the program segment　　　　x:=0;　　　　y:=0;　　　　cobegin　　　　　begin　　　　　　　　x:=1;　　　　　　　　y:=y+x;　　　　　end;　　　　　begin　　　　　　　　y:=2;　　　　　　　　x:=x+3;　　　　　end　　　　coend　　Which of the following indicate(s) possible values for the variables when the segment finishes execution　　Ⅰ. x=1,y=2　　Ⅱ. x=1,y=3　　Ⅲ. x=4,y=6
A. Ⅰ
B. Ⅱ and Ⅲ
C. Ⅰ and Ⅲ
D. Ⅱ and Ⅲ

[单项选择]Consider the following statements: Statement 1: "The sum of consumer and producer surpluses is maximized under both monopoly and perfect competition. " Statement 2: "All else being equal, a monopolist that practices price discrimination will be more allocatively efficient than a single-price monopolist. " Which of the following best describes the accuracy of these statements Statement 1 Statement 2 （）①A. Incorrect Correct ②B. Correct Correct ③C. Correct Incorrect
A. ①
B. ②
C. ③

[多项选择]下面是两个并发执行的进程。它们能正确执行吗若不能，试举例说明，并修改之。
Cobegin
Var x: integer;
Process P₁
Var y, z:integer;
Begin
x:=1;
y"=0;
If X＞=1 then y:=y+1;
z:=y;
End
Process P₂
Var t, u:integer;
Begin
x:=0;
t:=0;
If x＜1 then t:=t+2;
u:=t;
End
Coend

[单项选择]

In theory, annual performance review are constructive and positive interactions between managers and employees working together to attain (1) performance and strengthen the organization. In reality, they often create division, (2) morale (士气), and spark anger and jealousy. (3) , although the object of the annual performance review is to improve performance, it often has the (4) result. A programmer at a brokerage (经济) firm was (5) to learn at her annual performance review that she was denied a promotion (6) she wasn’t a "team player". What were the data used to make this (7) She didn’t smile in the company photo.
(8) this story might sound as if it came straight out of a comic strip, it is a true (9) of one woman’s experience. By (10) a few tips and guidelines (准则) from industry analysis, this kind of ordeal (厄运) can be avoided.
To end the year (
A. normal
B. moderate
C. maximum
D. minimum