以下程序的输出结果是( )。 #include＜stdio.h＞ main_爱下问搜题

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问题单项选择题

以下程序的输出结果是( )。
#include＜stdio.h＞
main()
int a=1，b=3；
if((++a＜0)&&!(b--＜=0))
printf("%d，%d\n"，a，b)；
else
printf("%d，%d\n"，b，a)；

A) 2，2
B) 1，3
C) 3，2
D) 3，1

答案

参考答案：C

解析：解答本题的关键在于if语句条件中的表达式。初始时a=1，b=3，所以++a=2＞0，因此++a＜0为假；因为是进行逻辑与(&&)运算，在&&的一个运算对象为假的前提下不用判断第二个运算对象的真假，就可以直接得出整个表达式的值为逻辑0，所以执行else语句。

完形填空

完形填空
通读下面短文，掌握其大意，然后在各题所给的四个选项中选出一个最佳答案。
When I was about twelve years old. I had an enemy (敌人)，a girl who liked to tell me about my shortcomings. She always   1 me that I was very short, and I wasn’t a good student, I talked too much, and so on. I tried to stand all of these as long as I could. Finally, I became very   2 . I ran to my father with tears in my eyes.
He listened to me   3 , and then asked, “Are the things that she said true or not? Jane, have you ever   4 what you’re really like? Now you have that girl’s   5 . Go and make a list of everything she said and find out if that are   6 . Pay no attention to the things that are not true.”
I did   7  he told me. To my great surprise, I found that about half of the things were true. Some of them I couldn’t    8 , like being very short, but a good number of them I could. I wanted to change the bad things in me, and for the   9  time I knew something about myself in a very clear way.
I brought the list back to my father. He   10  to take it. “That’s only just for you,” he said, “You know better than   11  else the truths about yourself, but sometimes others’ opinions are also important, so you have to learn how to 12 , and not just close your ears in anger and feel hurt. When something   13 is said about you is true, you’ll find that it will be of help to you. Our world is full of people who think that they know you. Don’t shut your ears. Listen to all of them.
14  hear the truth and do what you think is the right thing to do.”
I have remembered my father’s   15  at many important moments. I have never had a better piece of advice in my whole life.

D．differently

D．thought about

单项选择题

流行性乙型脑炎死亡的主要原因为（）

A.高热昏迷

B.缺氧

C.中枢性呼吸衰竭

D.低钠性脑病

E.外周性呼吸衰竭