The house rent is expensive.I’ve got about half the space I had at home and I'm paying ( ) here.A、three times as muchB、as much three timesC、much as three timesD、as three times much

Are you a member of the()?

I' m her brother.

A. house

B. household

C. home

B 宽度优先（种子染色法）

5．关键路径

几个定义： 顶点1为源点，n为汇点。

a. 顶点事件最早发生时间Ve[j], Ve [j] = max{ Ve [j] + w[I,j] },其中Ve (1) = 0;

b. 顶点事件最晚发生时间 Vl[j], Vl [j] = min{ Vl[j] – w[I,j] },其中 Vl(n) = Ve(n);

c. 边活动最早开始时间 Ee[I], 若边I由<j,k>表示，则Ee[I] = Ve[j];

d. 边活动最晚开始时间 El[I], 若边I由<j,k>表示，则El[I] = Vl[k] – w[j,k];

若 Ee[j] = El[j] ，则活动j为关键活动，由关键活动组成的路径为关键路径。

求解方法：

a. 从源点起topsort,判断是否有回路并计算Ve;

—Why didn't you go to the cinema yesterday?

—I______, but my daughter returned from America the moment I was leaving.

A. did

B. would

C. was going to

D. had

I've _____ these lines again and again but I still keep forgetting them.

A. gone off

B. gone about

C. gone over

D. gone through

b)

main()

{

union{ /*定义一个联合*/

int i;

struct{ /*在联合中定义一个结构*/

char first;

char second;

}half;

}number;

number.i=0x4241; /*联合成员赋值*/

printf("%c%c\n", number.half.first,

mumber.half.second);

number.half.first='a'; /*联合中结构成员赋值

*/

number.half.second='b';

printf("%x\n", number.i);

getch();

}