满足
,则
的虚部为( )
D .
每个人都有属于自己的独特记忆,构成自己成长路上别样的光彩。
请记述一段这样的记忆,写一篇不少于800字的文章。
要求:①自拟题目;②文体不限(诗歌除外);③不少于700字。
①亲密无间,不分彼此
②遇到体力劳动要多承担责任
③言行举止要有分寸
④划清界限,互不接触
①明文字符与对应密钥的ASCII码转化为二进制后求异或(对应位相同时结果为0,对应位不同时结果为1,如二进制1001与二进制1100的异或值为0101),并将异或结果转换为十进制p;
②如果处在奇数位,则将明文字符循环后移p个位置,否则将明文前移p个位置。移动过程中保持大小写不变。
最后把所得到的字符连接起来就是密文。
例如,密钥是“abc”,明文“d”的加密过程是:字符“d”的ASCII码表示为二进制是1100100,密钥“a”的ASCII码表示为二进制是1100001,两数进行异或结果是:0000101,转化为十进制为5,因为是第1个位置,所以把明文后移5个位置,则密文是“i”。
该加密过程使用VB来实现。具体功能设计如下:在Text 1中输入明文,Text 2中输入密钥,单击“开始加密”按钮Command 1后将密文显示在Text 3中,界面设计如图所示。
请回答以下问题:

Private SubCommand1_Click( )
Dim s As String, sn As String
Dim i As Integer, t As Integer, u As Integer
Dim p As Integer, g As Integer
sn=“”
For i=1To Len(Text 1.Text)
t=Asc(Mid(Text1.Text, i, 1) )
If t>=Asc(“a”) Then
g=Asc(“a”)
Else
g=Asc(“A”)
End If
u=Asc(Mid(Text 2.Text,(i-1) Mod Len(Text 2.Tex kwt)+1,1))
p= ①
t=t-g
If i Mod 2= 1 Then
t=(t+p) Mod 26
Else
t= ②
End If
sn=sn+Chr(t+g)
Next i
Text 3.Text=sn
End Sub
Function txor(xk wAs Integer, y As Integer) As Integer 'x、y求异或并返回十进制
Dim a As Integer, b As Integer, r As Integer, i As Integer
a=x:b=y
r=1
For i= 1 To 7
If a Mod 2<>bMod 2 Then ③
a=a\2
b=b\2
r=r*2
Next i
End Function
① ② ③

的解集为( )
直言不 路不拾 负请罪 耳欲聋
心神怡 美中不 然无味 足多谋
—________.
One young person, who was well educated, went for a job as a manager in a big company. The president did the final 1.
He discovered the youth was 2 and felt satisfied. Then the president asked who paid for his school fees. The youth answered, "My mother did it. She worked as a clothes 3."
The president requested the youth to 4 his hands. So the youth did. They were smooth. Then he asked, "Have you ever 5 your mother wash the clothes before?" The youth answered, "Never, my mother always wanted me to 6."
"Go and clean your mother's 7 when you go back today, and then 8 me tomorrow morning," the president said 9.
The youth felt his chance of getting the job was high, so when he went back, he 10 requested his mother to let him clean her hands. However, his tears fell 11 he cleaned his mother's hands slowly. It was the first time he had 12 that his mother's hands were so wrinkled (布满皱纹的). After that, the youth didn't say a word and washed all the remaining clothes for his mother 13. That night, Mother and Son 14 for a very long time, longer than any talk before.
The next 15, the youth went to the president's office. The president noticed the tears in the youth's eyes and asked: "Please tell me how you 16 about helping your mother." The youth said, "Number One, I know now what 17 is. Without my mother, I wouldn't be successful today. Number Two, by helping my mother, I realize how 18 it is to get something done. Number Three, I've come to realize the 19 of family relationship."
The president said, "You are 20. This is what I'm looking for to be my manager."
| 古国 | 始封 | 国都金地 | 存灭 | 始置州郡县时期 |
| 莒 | 少昊后赢姓国,周武王封之于莒。 | 莒县 | 历夏商、周武王又封之于莒,战国时灭于楚。 | 秦因置(莒)县 |
| 薛 | 黄帝十二世孙奚仲为夏车正,禹封为侯。 | 滕州市东薛城 | 历夏商西周,至战国灭于齐。 | 秦因置郡,西汉废郡为县。 |
| 鲁 | 周武王封弟周公旦于阜 | 曲阜市 | 历西周春秋,战国为楚所灭。 | 西汉置县属鲁国,西晋始置郡。 |
| 单 | 有虞氏舜帝师所封。 | 单县 | 春秋时为鲁单父邑 | 西汉因置单父县。 |
金属 | Na | Mg | Al | Cu | Fe |
熔点/℃ | 97.5 | 640 | 660 | 1 083 | 1 535 |
沸点/℃ | 883 | 1 090 | 2 467 | 2 567 | 2 750 |
A、先通过NaOH溶液后通过浓H2SO4 B、先通过浓H2SO4后通过NaOH溶液.
材料一:根据国家环保部2017年12月3日公布的数据,2017年1月到11月,全国338个地级以上城市PM10浓度比2013年同期下降了20.4%,其中京津冀、长三角、珠三角PM2.5浓度比2013年同期分别下降38.2%、31.7%、25.6%,全国空气质量总体改善,但部分地区、部分时段空气质量超标问题仍然突出。这主要是因我国以煤为主的能源结构、以重型化工业为主的产业结构、以公路货运为主的运输结构尚未转变,污染物排放量大。
材料二:国家环保部制定打赢蓝天保卫战三年作战计划,明确具体战役及其时间表和路线图,以京津冀及周边、长三角等重点区域为主战场,强化区域联防联控,一个战役接着一个战役打,确保3年取得更大成效。这是一场没有硝烟的战争,打好蓝天保卫战,人人都应该是“蓝天小卫士”。只要全民齐心努力,就一定能够实现蓝天常在、绿水长流、永续发展。
题目: , 不仅仅是享乐
要求:
(1)在横线上填入一个恰当的词或短语,将标题补充完整;
(2)文体自选,字数不少于600(诗歌不少于20行);
(3)文中不得出现真实的人名、地名、校名,不得套作,不得抄袭。
卷面书写(5分) 根据相关内容书写评定,要求书写规范、工整,卷面整洁。
第一步,把方程
中的
用
来替换,得到方程
;
第二步,利用公式
将
因式分解;
第三步,求得
,
的一组值,得到方程
的三个根:
,
,
(其中
,
为虚数单位);
第四步,写出方程
的根:
,
,
.
某同学利用上述方法解方程
时,得到
的一个值:
, 则下列说法正确的是( )
B .
C .
D .
如图,∠BOC=9°,点A在OB上,且OA=1,按下列要求画图:以A为圆心,1为半径向右画弧交OC于点A1 , 得第1条线段AA1;再以A1为圆心,1为半径向右画弧交OB于点A2 , 得第2条线段A1A2;再以A2为圆心,1为半径向右画弧交OC于点A3 , 得第3条线段A2A3;…这样画下去,直到得第n条线段,之后就不能再画出符合要求的线段了,则n= .
