GtkTextIter iter;
gtk_text_buffer_get_start_iter(buffer, &iter);
gchar buf[1200];
char *sen;
sen=(char *)malloc(sizeof(char)*(strlen(psen->sen)+1));
strcpy(sen,psen->sen);
sprintf(buf,"%-3d\t%s\n",i,sen);
gtk_text_buffer_insert(buffer, &iter, buf, -1);
只要是：
psen->sen="The so-called ice-bucket challenge—dump ice water on yourself, post and tag yourself on social media and challenge others to do the same—got its start among golfers as a way to support pet charities."
就不会显示出来，其他时候会显示。输出就像下面，第1、3、5、7都是上面那句话，都没显示。
8 results have been found!
----e:\dealt_data3.txt
2 As of Thursday, the ALS Association had raised $7.6 million in donations in two weeks.
----e:\dealt_data3.txt
----e:\dealt_data3.txt
4 As of Thursday, the ALS Association had raised $7.6 million in donations in two weeks.
----e:\dealt_data3.txt
----e:\dealt_data3.txt
6 As of Thursday, the ALS Association had raised $7.6 million in donations in two weeks.
----e:\dealt_data3.txt
----e:\dealt_data3.txt
8 As of Thursday, the ALS Association had raised $7.6 million in donations in two weeks.
----e:\dealt_data3.txt
