何谓CRT的显示分辨率、灰度级？

完成下面对话，每个空格只准填一个句子，并使用正确的标点符号。

W:  Tomorrow is Sunday. What shall we do, dear?

M:  (1)_______________________________________________________________________

W:  The park ? Are you still interested in the park? 

M:  (2)_______________________________________________________________________

W:  Good, I love to go hiking.

M:  (3) ______________________________________________________________________

W:  What should we prepare?

M:  You must bring some food and drinks, and don't forget your cell phone.

W:  (4) ______________________________________________________________________

M:  Really ? What's wrong with it?

W:  Don't you remember? You dropped it into the water and it hasn't worked ever since.

M:  All right. (5)_______________________________________________________________

W: Your old one? No, I want a new one. Tomorrow let's go to the cell phone shop first!

方程0.2x=4的解是______．

如图，容积为的容器内充有压缩空气。容器与水银压强计相连，压强计左右两管下部由软胶管相连。气阀关闭时，两管中水银面同高，左管中水银面上方到气阀之间空气的体积为。打开气阀，左管中水银下降；缓慢地向上提右管，使左管中水银面回到原来高度，此时右管与左管中水银面的高度差为h。已知水银的密度为，大气压强为，重力加速度为g；空气可视为理想气体，其温度不变。求气阀打开前容器中压缩空气的压强P₁。

高粱米（）高时可以消除丹宁的不良影响。

有以下程序：
#include＜string.h＞
main()
char p[20]=’a’,’b’,’c’,’d’)，q[]="abc"，r[]="abcde"
strcat(p，r)；strcpy(p+strlen(q)，q)；
printf("%d\n"，sizeof(p))；

程序运行后的输出结果是______。

A) 9
B) 6
C) 11
D) 7