某工厂去年的利润（总收入－总支出）为１００万元，今年总收入比去年增加了１０％，总支出比去年减少了９％，今年的利润为３００万元，去年的总收入、总支出各是多少万元？

研究发现：人和猿在骨骼结构上几乎相同；人和猿的盲肠都有蚓突：人和猿在胚胎发育的前五个月完全一样．这些事实说明了（    ）

如图，在直角坐标系中，正方形EFOH是正方形ABCD经过位似变换得到的，对角线OE=4 ，则位似中心的坐标是（　　）

用所给的单词的适当形式填空

①This is the ____ (one) time for me to see you.

②November is the ____ (eleven) month of the year.

③  My ____ (sister) birthday is on November 12.

④  September 10 is ____ (teacher) Day.

⑤  ____ (she) birthday is on May 5.

⑥  The ____ (five) lesson is very interesting.