题目内容
How to Lose Weight Properly
Researchers stress that we need diet and exercise to drop pounds. "The most ____51____ way to lose weight is with a combination," says Rena Wing, head of the National Weight Control Center.
____52____ experts also admit that many ____53____ losers find it helps to ____54____ on one or the other. "A lot of people feel helpless at the thought of ____55____ everything--diet, lifestyle," says Bess Marcus,professor of human behavior. at Brown University Medical School. "So ask yourself, &39; ____56____ do I want to start？ What am I willing to focus on？&39;"
The ____57____ depends on everything from what you hope to ____58____ to how our life is ____59 .____
If you are in a big hurry to drop pounds ____60____, dieting is the way to go. Decades of ____61____ have shown it&39;s the surest and quickest method. If you are more ____62____ with how you look than with numbers on the scale, though, ____63____ may be the way go to. By increasing physical activity, you&39;ll ____64____ fat and build muscle tissue.____65____ often end up losing both fat and muscle tissue.
Your best approach is one that suits your lifestyle. If you&39;ve tried and fail at one approach, consider the other. "A lot of people have so disappointed that they begin to think they&39;ll never be able to lose weight," says Marcus. "That&39;s when it&39;s time to try something new. Even a small step forward can help people regain confidence and convince themselves they can make even bigger changes."
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【说明】
所谓货郎担问题，是指给定一个无向图，并已知各边的权，在这样的图中，要找一个闭合回路，使回路经过图中的每一个点，而且回路各边的权之和最小。
应用贪婪法求解该问题。程序先计算由各点构成的所有边的长度(作为边的权值)，按长度大小对各边进行排序后，按贪婪准则从排序后的各边中选择边组成回路的边，贪婪准则使得边的选择按各边长度从小到大选择。
函数中使用的预定义符号如下：
define M 100
typedef struct{/*x为两端点p1、p2之间的距离，p1、p2所组成边的长度*/
float x;
int p1, p2;
}tdr;
typedef struct{/*p1、p2为和端点相联系的两个端点，n为端点的度*/
int n, P1, p2;
}tr;
typedef struct{/*给出两点坐标*/
float x,y;
}tpd;
typedef int tl[M];
int n=10;
【函数】
float distance(tpd a,tpd b);/*计算端点a、b之间的距离*/
void sortArr(tdr a[M], int m);
/*将已经计算好的距离关系表按距离大小从小到大排序形成排序表，m为边的条数*/
int isCircuit(tr[M], int i, int j);
/*判断边(i, j)选入端点关系表r[M]后，是否形成回路，若形成回路返回0*/
void selected(tr r[M], int i, int j);/*边(i,j)选入端点关系表r*/
void course(tr r[M], tl 1[M]);/*从端点关系表r中得出回路轨迹表*/
void exchange(tdr a[M], int m, int b);
/*调整表排序表，b表示是否可调，即是否有边长度相同的边存在*/
void travling(tpd pd[M], int n, float dist, t1 locus[M])
/*dist记录总路程*/
{
tdr dr[M];/*距离关系表*/
tr r[M];;/*端点关系表*/
int i, j, k, h, m;/*h表示选入端点关系表中的边数*/
int b;/*标识是否有长度相等的边*/
k=0;
/*计算距离关系表中各边的长度*/
for(i=1;i＜n;i++){
for(j=i+1;j＜=n;j++){
k++;
dr[k].x=(1);
dr[k].p1=i;
dr[k].p2=j;
}
}
m=k;
sortArr(dr,m);/*按距离大小从小到大排序形成排序表*/
do{
b=1;
dist=0;
k=h=0;
do{
k++;
i=dr[k].p1;
j=dr[k].p2;
if((r[i].n＜=1)&&(r[j].n＜=1)){/*度数不能大于2*/
if((2)){
/*若边(i，j)加入r后形成回路，则不能加入*/
(3);
h++;
dist+=dr[k].x;
}else if((4)){
/*最后一边选入r成回路，则该边必须加入且得到解*/
selected(r,i,j);
h++;
&n
Hints for Reading Practice
1 Most of us can find 15 minutes or half an hour each day for some regular activity. For example, one famous surgeon always spent 15 minutes reading something before he went to sleep each day. Whether he went to bed at 10 p.m. or 2:30 a.m. made no difference.
2 "Speed Reading" courses teach students how to read more quickly. In such courses,teachers often ask students to find out how many words a minute he is reading. You can do this too: look at your watch every 5 or 10 minutes and write down the page number you have reached.
3 Obviously, you should not increase your reading speed if you do not understand what you are reading. If you find something you don&39;t understand in the book, or you cannot remember clearly the details of what is said, why not read the chapter again？
4 Take four or five pages of an interesting book you happen to be reading now. Read these pages as fast as you can. Don&39;t worry about whether you understand or not. If you keep doing this"lightning speed" reading for a period of time, you will usually find that your normal speed has increased.
5 Most paragraphs in an article have a topic sentence that expresses the central idea. The opening paragraph often suggests the general direction and content of the article, while paragraphs that follow expand or support the first. The closing paragraph often gives a summary of the most important points of the article.
Paragraph 2 __________ 查看材料
在MR＞MC时，会引起供给增加，价格下降，需求增加，从而使MR更加大于MC。（)
More and more adult students are renting fiats to live away from campus, and some of them are student lovers. Some students think it unacceptable, but others think it OK. What's your opinion？
Write on ANSWER SHEET TWO a composition of about 200 words on the following topic:
On Cohabitation of Student Lovers
You are to write in three parts.
In the first part, state specifically what your opinion is.
In the second part, provide one or two reasons to support your opinion.
In the last part, bring what you have written to a natural conclusion or make a summary.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the instructions may result in a toss of marks.
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