育性转化
参考答案:有些植物的育性可随光照长度、环境湿度等条件的变化而发生改变的现象称为育性转化。
Direction: For this part you are allowed 30 minutes to write a composition on the topic :Cell Phones .You should write no less than 120 words and base your composition on the outline below:
1、描述上图所示的手机用户数的变化情况
2、出现这种情况的原因
3、对此现象作出评价
下面程序的功能是把文件file1.txt中重复字符去掉后(即若干多个字符相同,则只保留一个)写入文件file2.txt。请填空。 Private Sub Command1_Click() Dim inchar As String, temp As String, outchar As String outchar="" Open"filel.txt" For Input As#1 Open"file2.txt" For Input As# (12) n=LOF( (13) ) inchar=Input $ (n,1) For k=1 To n temp=Mid(inchar,k,1) If InStr(outchar, temp)= (14) Then outchar=outchar&temp End If Next k Print #2, (15) Close#2 Close#1 End Sub