阅读理解。
While my friends attended their universities in great delight,l restarted my senior high school life.
My spirit sank at the thought of staring all over again. Surrounded by strange classmates,l felt like
I was in a maze (迷宫) and was sorry for myself. There were some complex feelings in my mind.
I was frightened ,nervous and lonely.
To make matters worse,I recalled my failure again and again, which put more pressure on me
than I could bear. As a result,l was always feeling down during class.
My teacher found me spiritless. One day he asked me to come to his office and told me about
his attitude towards Iife: we might suffer from making mistakes, but it's important to model ourselves
into the people we will become. All the growing pains and the embarrassing things we may experience
are part of the process. We never stop growing up,so learn from it and keep up your spirit! At last ,
he added , " If you are optimistic , things you want may happen to
you !"
Warm feelings rushed through my soul. I suddenly found the sun shining again when I stepped out
of his office.
With the teacher's help,l eventually got over my depression. From then on,l no longer bowed(垂下)
my head but began smiling to my classmates. I would put up my hand confidently in class and play
with my new friends in my spare time. Meanwhile, I was gradually embraced by my classmates.
Now faced with fierce competition, we all study strenuously(奋发地) .and every second counts.
However, there is an atmosphere of mutuai(相互的) trust and respect between us. I love my class;
I love my classmates !
To be frank ,I still have a thirst for my dream university , but I'm not afraid of the failure because
I can profit by it. With parents and teachers' great expectation, I'm quite certain of my future and I'm
sure I can fly high.
1. Why did the teacher have a talk with the author?
A. He found the author in a bad mood.
B. He thought the author very talkative.
C. It was his duty to talk to a new student.
D. The author impressed the teacher favorably.
2. What can we leam about the teacher from Paragraph 3?
A. He has once made some mistakes in his life.
B. He is very optimistic about his future success.
C. He instructs the author to develop a positive attitude.
D. He thinks one can't grow up without bad experiences.
3. The underlined word " embraced" in Paragraph 5 can be replaced by__________.
A. hugged
B. accepted
C. understood
D. recognized
4. How can you describe the author's feeling from the last two paragraphs ?
A. Depressed.
B. Pessimistic.
C. Satisfied.
D. Confident.
5. The moral lesson we learn from author's story is that________.
A. challenges we face benefit us
B. it is hard to get over difficulty
C. mutual understanding is critical
D. it is teachers who save our lives
因为对于任意路径，所有的中间顶点都在集合{1,2, ..., n｝ 内，因此矩阵D(n) =｛d(n)ij｝n*n 给出了任意两个顶点之间的最短路径，即对所有i, j ∈V,d(n)ij表示顶点i到顶点 j的最短路径。 下面是求解该问题的伪代码，请填充其中空缺的 (1)至(6)处。 伪代码中的主要变量说明如下： W：权重矩阵 n： 图的顶点个数 SP：最短路径权重之和数组，SP[i]表示顶点i到其它各顶点的最短路径权重之和，i从1到n min_SP：最小的最短路径权重之和 min_v：具有最小的最短路径权重之和的顶点 i：循环控制变量 j：循环控制变量 k：循环控制变量 LOCATE -SHOPPINGMALL(W, n) 1D(0)=W 2for （1） 3for i = 1 to n 4for j = 1 to n 5 if d(k-1)ij≤≤d(k-1)ik+d(k-1)kj 6 （2） 7 else 8 （3） 9for i = 1 to n 10SP[i] = 0 11for j = 1 to n 12 （4） 13min_SP = SP[1] 14 （5） 15for i = 2 to n 16 if min_SP > SP[i] 17 min_SP = SP[i] 18 min_v = i 19 return （6）